Molecular sieve BUCT-10, synthesis and use thereof

Abstract

The invention discloses a molecular sieve BUCT-10 with a novel topological structure and a unique X-ray powder diffraction characteristic, the molecular sieve BUCT-10 has a one-dimensional ten-membered ring straight pore channel, and can be synthesized in an aluminum phosphate (AlPO), silicoaluminophosphate (SAPO), metal aluminum phosphate (MeAPO) and metal silicoaluminophosphate (MeSAPO) system by taking an alkyl (C1-C5) quaternary ammonium or amine compound as a template agent, and after the template agent is removed through high-temperature calcination, the molecular sieve BUCT-10 can be prepared into the molecular sieve BUCT-10 with the novel topological structure and the unique X-ray powder diffraction characteristic. The structure is stable, and the material can be used as a catalyst, a catalyst carrier or an adsorption separation material.

Description

Technical Field

[0001] The invention relates to a novel topological structure molecular sieve BUCT-10, and also relates to a synthesis method and application thereof. Background Art

[0002] Generally, molecular sieve refers to a type of inorganic microporous crystalline material formed by TO4 (T atom means tetrahedral atom, i.e. molecular sieve framework atom, such as P, Al, Si, etc.) tetrahedrons connected by common vertices. Molecular sieves have the characteristics of diverse topological structures and rich framework chemical compositions, which makes the performance of molecular sieve materials varied and easy to adjust, and they are widely used in catalysis, adsorption and separation.

[0003] The topological structure of molecular sieves is determined by the connection mode of the framework TO4, and different connection modes can produce different topological structures. According to the definition and explanation of the International Molecular Sieve Association, for a specific molecular sieve topological structure, the coordination sequence (Coordination Sequences) and the vertex symbol (Vertex Symbols) can be clearly determined. The International Molecular Sieve Association currently confirms 260 molecular sieve topological structures (as of May 2023), which can be found on the official website of the International Molecular Sieve Association http: / / www.iza-structure.org / databases / . Molecular sieves with specific topological structures have unique characteristic powder X-ray diffraction spectra, including characteristic information such as the position and relative intensity of the diffraction peaks. Of course, they can also be affected by factors such as the chemical composition, grain size and shape of the molecular sieve, resulting in slight differences, but in general, the spectra are basically similar.

[0004] Molecular sieves with different topological structures have open pores with different sizes, shapes, dimensions, connectivity, tortuosity and other characteristics, so the performance of molecular sieves varies significantly. In order to obtain molecular sieve materials with better performance, people have been working hard to explore and synthesize new topological structures, but the number of known molecular sieve topological structures is still limited and far lower than the theoretically predicted feasible number. Therefore, the creation of molecular sieve materials with new topological structures has great potential but is also extremely challenging, and is an important research direction in the field of molecular sieves today.

[0005] The skeleton composition of molecular sieves is very rich and varied, and most elements in the periodic table can be introduced into molecular sieves. The molecular sieves currently used in industry can be mainly divided into silicate molecular sieves (silicon is the main T atom in the skeleton) and aluminophosphate molecular sieves (phosphorus and aluminum are the main T atoms in the skeleton) according to the chemical composition of the skeleton. Under the condition of keeping the topological structure unchanged, the molecular sieve can introduce other T atoms, called T heteroatoms, into the skeleton using basically similar synthesis methods. In 1982, Wilson et al. first reported aluminum phosphate molecular sieve (AlPO molecular sieve), the skeleton of which is composed of AlO2- and PO2 + The tetrahedrons are strictly connected in alternating order, and the skeleton is electrically neutral (see US4,310,440). Subsequently, they used SiO2 tetrahedrons to replace PO2 + The tetrahedron introduces heteroatom silicon and negative charge into the framework, and reports the silicoaluminophosphate molecular sieve (SAPO molecular sieve) (see US4,440,871). Similarly, other metal heteroatoms can be introduced into the aluminum phosphate molecular sieve framework to form metal phosphate (MeAPO molecular sieve) (see US4,567,029), or other metal heteroatoms and silicon heteroatoms can be simultaneously introduced into the aluminum phosphate molecular sieve framework to form metal silicoaluminophosphate molecular sieve (MeSAPO molecular sieve) (see US4,935,216). The substitution of these heteroatoms can introduce catalytic active centers into the molecular sieve, adjust the acidity, redox property, pore size, polarity, etc. of the molecular sieve, and make the molecular sieve exhibit excellent catalytic performance, adsorption and separation performance, etc. Summary of the invention

[0006] The present invention provides a novel topological molecular sieve BUCT-10 having a one-dimensional ten-membered ring straight channel, having a tetrahedral T atomic skeleton connected by bridging atoms, and the tetrahedral T atomic skeleton has the topological characteristics shown in Table 1:

[0007] Table 1

[0008] BUCT-10 molecular sieve raw powder has the powder X-ray diffraction spectrum characteristics shown in Table 2;

[0009] Table 2

[0010] In the above data, (a) is ±0.20°, (b) provides an X-ray pattern based on a relative scale, where the strongest line in the X-ray spectrum is assigned a value of 100, and w, m, s, vs represent the relative intensity of the diffraction peaks, where w is weak, m is medium, s is strong, and vs is very strong. Generally speaking, w is less than 20, m is 20-40, s is 40-60, and vs is greater than 60.

[0011] The calcined sample of BUCT-10 molecular sieve has the powder X-ray diffraction spectrum characteristics shown in Table 3 below:

[0012] Table 3

[0013] In the above data, (a) is ±0.20°, (b) provides an X-ray pattern based on a relative scale, where the strongest line in the X-ray spectrum is assigned a value of 100, and w, m, s, vs represent the relative intensity of the diffraction peaks, where w is weak, m is medium, s is strong, and vs is very strong. Generally speaking, w is less than 20, m is 20-40, s is 40-60, and vs is greater than 60.

[0014] The chemical composition of the BUCT-10 molecular sieve framework is M z Al x P y O4, wherein 0≤z≤0.50, 0.5≤x≤1.0, 0.5≤y≤1.0, M is a framework heteroatom, which is one or more of Mg, Sc, Ti, Zr, V, Nb, Cr, Mo, Mn, Fe, Co, Ni, Cu, Zn, B, Ga, In, Si, Ge, Sn;

[0015] The present invention also provides a method for preparing the molecular sieve BUCT-10, which comprises the following steps: (1) Aluminum source, phosphorus source, heteroatom source, organic ammonium or amine (R), fluorine source, and water are mixed in the following molar ratios: Al:a P:b M:c R:d F - :e H2O, the corresponding value ranges of a, b, c, d and e are: a = 0.01 ~ 10, b = 0 ~ 10, c = 0.01 ~ 10, d = 0 ~ 10, e = 0 ~ 100, to obtain an initial reaction mixture; (2) crystallizing the initial reaction mixture at 80 to 300° C. for about 1 minute to 5 days; (3) The crystallized product is washed, filtered and dried to obtain BUCT-10 molecular sieve.

[0016] The aluminum source is selected from one or more of aluminum isopropoxide, pseudo-boehmite, aluminum acetate, aluminum nitrate, aluminum sulfate, aluminum hydroxide, aluminum chloride, aluminum oxide, kaolin, and metallic aluminum.

[0017] The phosphorus source is selected from one or more of phosphoric acid, monoammonium hydrogen phosphate, diammonium hydrogen phosphate, ammonium phosphate, and phosphorus pentoxide.

[0018] The heteroatom source is selected from magnesium acetate, magnesium nitrate, magnesium sulfate, magnesium chloride, magnesium carbonate, magnesium oxide, scandium acetate, scandium nitrate, scandium sulfate, scandium chloride, scandium carbonate, scandium oxide, tetraethyl titanate, tetramethyl titanate, titanium nitrate, titanium sulfate, titanium chloride, titanium oxide, zirconium acetate, zirconium nitrate, zirconium sulfate, zirconium chloride, zirconium hypochlorite, zirconium carbonate, zirconium oxide, vanadium nitrate, vanadium sulfate, vanadium chloride, vanadium oxide, niobium nitrate, niobium sulfate, niobium chloride, niobium oxide, chromium acetate, chromium nitrate, chromium sulfate, chromium chloride, chromium carbonate, chromium oxide, molybdenum acetate, molybdenum nitrate, molybdenum sulfate, molybdenum chloride, molybdenum carbonate, molybdenum oxide, manganese acetate, manganese nitrate, manganese sulfate, manganese chloride, manganese carbonate, manganese oxide, iron acetate, iron nitrate, sulfuric acid One or more of iron, ferric chloride, ferric carbonate, ferric oxide, cobalt acetate, cobalt nitrate, cobalt sulfate, cobalt chloride, cobalt carbonate, cobalt oxide, nickel acetate, nickel nitrate, nickel sulfate, nickel chloride, nickel carbonate, nickel oxide, copper acetate, copper nitrate, copper sulfate, copper chloride, copper carbonate, copper oxide, zinc acetate, zinc nitrate, zinc sulfate, zinc chloride, zinc carbonate, zinc oxide, boric acid, sodium borate, borax, gallium oxide, gallium nitrate, gallium sulfate, gallium chloride, gallium carbonate, gallium hydroxide, indium oxide, indium nitrate, indium sulfate, indium chloride, indium carbonate, indium hydroxide, tetraethyl orthosilicate, tetramethyl orthosilicate, white carbon, silica sol, germanium acetate, germanium chloride, germanium oxide, tin acetate, tin sulfate, tin chloride, and tin oxide.

[0019] The organic ammonium or amine is an alkylammonium or alkylamine, the alkyl group may be substituted or unsubstituted, the alkyl group has a carbon number of C1-C5, and the ammonium may be an ammonium salt or an ammonium hydroxide, preferably one or more of tetramethylammonium, tetraethylammonium, tetrapropylammonium, tetrabutylammonium, ethyltrimethylammonium, propyltrimethylammonium, butyltrimethylammonium, amyltrimethylammonium, diethyldimethylammonium, dipropyldimethylammonium, dibutyldimethylammonium, dipentyldimethylammonium, hexamethylammonium, choline, ethyldimethylamine, propyldimethylamine, butyldimethylamine, ethylmethylamine, propylmethylamine, and butylmethylamine.

[0020] The fluorine source is one or more of HF, NH4F and NaF.

[0021] The BUCT-10 molecular sieve of the present invention still maintains a stable skeleton after being calcined in an air atmosphere at 600°C and 1000°C to remove the template molecules (e.g. Figure 1 As shown), it shows excellent thermal stability. At the same time, heteroatoms can be directly incorporated into the molecular sieve framework. These characteristics give the molecular sieve material uses in the fields of catalysis, adsorption, separation, etc.

[0022] The BUCT-10 molecular sieve of the present invention can be used as a catalyst or catalyst carrier, and the catalytic reactions include isomerization, alkylation, alcohol to hydrocarbon, synthesis gas to hydrocarbon, selective catalytic oxidation, selective catalytic reduction denitrification, dealkylation, alkyl exchange, hydration, dehydration, polymerization, dimerization, oligomerization, hydrogenation, dehydrogenation, hydrocracking, hydrotreating, hydrorefining, hydrodenitrogenation, hydrodesulfurization and combinations thereof.

[0023] Isomerization is the process of contacting hydrocarbon feedstock with a catalyst in the presence or absence of hydrogen, with a reaction temperature of 150-650°C, a reaction pressure of 0.1-20.0 MPa, a hydrogen-to-hydrocarbon ratio of 0.1-50, and a mass space velocity of 0.5-50 h -1 .

[0024] Alkylation of aromatics / alkanes and alcohols / olefins, contacting a mixture containing aromatics / alkanes and alcohols / olefins with a catalyst, the molar ratio of aromatics / alkanes to alcohols / olefins is 0.1-20, the reaction temperature is 100-500°C, the reaction pressure is 0.1-6.0 MPa, and the mass space velocity is 0.1-10.0 h -1 .

[0025] The alcohol-to-hydrocarbon reaction is to contact alcohol with a catalyst, the reaction temperature is 300-600°C, the reaction pressure is 0.1-2Mpa, and the mass space velocity of the raw alcohol is 1-40h -1 .

[0026] The BUCT-10 molecular sieve of the present invention can be used as an adsorption separation material, and the adsorption separation is based on the size and polarity of the components or the ion exchange between the components and the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The powder X-ray diffraction diagrams (the light source is Cu target Kα ray) of the original BUCT-10 molecular sieve powder and the sample after high-temperature calcination to remove the template agent of the present invention are shown.

[0028] Figure 2 This is a scanning electron microscope image of the molecular sieve BUCT-10 of the present invention.

[0029] Figure 3 This is a nitrogen physical adsorption diagram of the molecular sieve BUCT-10 of the present invention after high-temperature calcination to remove the template.

[0030] Figure 4 This is a skeleton structure diagram of the molecular sieve BUCT-10 of the present invention. To make the picture clear, only the skeleton T atoms are shown in the figure, and the bridge atoms are ignored. DETAILED DESCRIPTION

[0031] Example

[0032] In order to more clearly illustrate the present invention, the following examples are given. These examples do not limit the protection scope of the present invention in any way.

[0033] Example 1

[0034] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1R:1F, Al was the aluminum source, P was the phosphorus source, R was the organic ammonium, and F was the fluorine source. The synthesis steps were as follows: phosphoric acid, ethyltrimethylammonium hydroxide, hydrofluoric acid, and aluminum isopropoxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0035] Example 2

[0036] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1R:1F, Al was the aluminum source, P was the phosphorus source, R was the organic ammonium, and F was the fluorine source. The synthesis steps were as follows: phosphoric acid, propyltrimethylammonium hydroxide, hydrofluoric acid, and aluminum isopropoxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0037] Example 3

[0038] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1R:1F, Al was the aluminum source, P was the phosphorus source, R was the organic ammonium, and F was the fluorine source. The synthesis steps were as follows: phosphoric acid, butyltrimethylammonium hydroxide, hydrofluoric acid, and aluminum isopropoxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0039] Example 4

[0040] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1R:1F, Al was the aluminum source, P was the phosphorus source, R was the organic ammonium, and F was the fluorine source. The synthesis steps were as follows: phosphoric acid, amyltrimethylammonium hydroxide, hydrofluoric acid, and aluminum isopropoxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0041] Example 5

[0042] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1R:1F, where Al was the aluminum source, P was the phosphorus source, R was the organic ammonium, and F was the fluorine source. The synthesis steps were as follows: phosphoric acid, diethyldimethylammonium hydroxide, hydrofluoric acid, and aluminum isopropoxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0043] Example 6

[0044] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1R:1F, Al was the aluminum source, P was the phosphorus source, R was the organic ammonium, and F was the fluorine source. The synthesis steps were as follows: phosphoric acid, dipropyl dimethyl ammonium hydroxide, hydrofluoric acid, and aluminum isopropoxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0045] Example 7

[0046] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1R:1F, Al was the aluminum source, P was the phosphorus source, R was the organic ammonium, and F was the fluorine source. The synthesis steps were as follows: phosphoric acid, dibutyl dimethyl ammonium hydroxide, hydrofluoric acid, and aluminum isopropoxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0047] Example 8

[0048] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1R:1F, Al was the aluminum source, P was the phosphorus source, R was the organic ammonium, and F was the fluorine source. The synthesis steps were as follows: phosphoric acid, dipentyldimethylammonium hydroxide, hydrofluoric acid, and aluminum isopropoxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4h, and crystallized at 180°C for 4h under sealed conditions. The resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0049] Example 9

[0050] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1R:1F, Al was the aluminum source, P was the phosphorus source, R was the organic ammonium, and F was the fluorine source. The synthesis steps were as follows: phosphoric acid, hexamethonium hydroxide, hydrofluoric acid, and aluminum isopropoxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0051] Example 10

[0052] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1R:1F, Al was the aluminum source, P was the phosphorus source, R was the organic ammonium, and F was the fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, and aluminum isopropoxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0053] Embodiment 11

[0054] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1M:0.1R:1HF, Al was an aluminum source, P was a phosphorus source, M was a heteroatom source, R was an organic ammonium, and F was a fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, aluminum isopropoxide, and magnesium acetate were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0055] Example 12

[0056] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1M:0.1R:1HF, Al was an aluminum source, P was a phosphorus source, M was a heteroatom source, R was an organic ammonium, and F was a fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, aluminum isopropoxide, and manganese acetate were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0057] Embodiment 13

[0058] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1M:0.1R:1HF, Al was an aluminum source, P was a phosphorus source, M was a heteroatom source, R was an organic ammonium, and F was a fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, aluminum isopropoxide, and cobalt acetate were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0059] Embodiment 14

[0060] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1M:0.1R:1HF, Al was an aluminum source, P was a phosphorus source, M was a heteroatom source, R was an organic ammonium, and F was a fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, aluminum isopropoxide, and nickel acetate were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0061] Embodiment 15

[0062] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1M:0.1R:1HF, Al was an aluminum source, P was a phosphorus source, M was a heteroatom source, R was an organic ammonium, and F was a fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, aluminum isopropoxide, and copper acetate were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0063] Example 16

[0064] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1M:0.1R:1HF, Al was an aluminum source, P was a phosphorus source, M was a heteroatom source, R was an organic ammonium, and F was a fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, aluminum isopropoxide, and zinc acetate were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0065] Embodiment 17

[0066] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1M:0.1R:1HF, Al was an aluminum source, P was a phosphorus source, M was a heteroatom source, R was an organic ammonium, and F was a fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, aluminum isopropoxide, and ferric acetate were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0067] Embodiment 18

[0068] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1M:0.1R:1HF, Al was an aluminum source, P was a phosphorus source, M was a heteroatom source, R was an organic ammonium, and F was a fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, aluminum isopropoxide, and tetraethyl titanate were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0069] Embodiment 19

[0070] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1M:0.1R:1HF, Al was an aluminum source, P was a phosphorus source, M was a heteroatom source, R was an organic ammonium, and F was a fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, aluminum isopropoxide, and tetraethyl orthosilicate were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0071] Embodiment 20

[0072] Molecular sieve synthesis gel was prepared according to the molar ratio of 1Al:1P:0.1M:0.1R:1HF, Al was an aluminum source, P was a phosphorus source, M was a heteroatom source, R was an organic ammonium, and F was a fluorine source. The synthesis steps were as follows: phosphoric acid, choline hydroxide, hydrofluoric acid, aluminum isopropoxide, and germanium dioxide were added to a beaker and stirred evenly, and the resulting reaction mixture was transferred to a stainless steel reactor lined with polytetrafluoroethylene, crystallized at 180°C for 4 hours, and the resulting product was washed with distilled water, filtered, and dried. The product was directly used for X-ray powder diffraction phase identification and confirmed to be BUCT-10.

[0073] Embodiment 21

[0074] The structure of the BUCT-10 molecular sieve obtained in Example 1 remained stable after being calcined at high temperatures (600°C and 1000°C). The X-ray powder diffraction patterns of the original molecular sieve powder sample and the sample after high temperature calcination are as follows: Figure 1 The X-ray powder diffraction pattern characteristics of the original powder and the calcined sample are shown in Table 2 and Table 3. The scanning electron microscope photo of the BUCT-10 original powder sample is shown in Figure 2 The nitrogen physical adsorption of BUCT-10 after calcination is shown in Figure 3 shown.

[0075] Embodiment 22

[0076] The BUCT-10 molecular sieve obtained in Example 1 was subjected to continuous rotation electron diffraction test (cRED), and structural analysis showed that the BUCT-10 molecular sieve belongs to the orthorhombic system, the space group is P ca 21, a = 17.636 (4), b = 13.559 (3), c = 8.2000 (16). The crystallographic structure file obtained after the cRED test was used for topological analysis, and the topological characteristics of the framework structure of the BUCT-10 molecular sieve are shown in Table 1. The framework structure of the BUCT-10 molecular sieve is shown in Figure 4 As shown, it has a one-dimensional ten-membered ring straight channel.

Claims

1. A novel topological molecular sieve BUCT-10 having a one-dimensional ten-membered ring straight channel, having a tetrahedral T atomic framework connected by bridging atoms, the tetrahedral T atomic framework having the topological characteristics described in the following table:

2. The BUCT-10 molecular sieve according to claim 1, characterized in that The molecular sieve raw powder has the powder X-ray diffraction spectrum characteristics shown in the following table: In the above data, (a) is ±0.20°, (b) provides an X-ray pattern based on a relative scale, where the strongest line in the X-ray spectrum is assigned a value of 100, and w, m, s, vs represent the relative intensity of the diffraction peaks, where w is weak, m is medium, s is strong, and vs is very strong. Generally speaking, w is less than 20, m is 20-40, s is 40-60, and vs is greater than 60.

3. The BUCT-10 molecular sieve according to claim 1, characterized in that The molecular sieve has the following powder X-ray diffraction spectrum characteristics after calcination: In the above data, (a) is ±0.20°, (b) provides an X-ray pattern based on a relative scale, where the strongest line in the X-ray spectrum is assigned a value of 100, and w, m, s, vs represent the relative intensity of the diffraction peaks, where w is weak, m is medium, s is strong, and vs is very strong. Generally speaking, w is less than 20, m is 20-40, s is 40-60, and vs is greater than 60.

4. The BUCT-10 molecular sieve according to claim 1, characterized in that The chemical composition of the molecular sieve framework is M z Al x P y O4, wherein 0≤z≤0.50, 0.5≤x≤1.0, 0.5≤y≤1.0, M is a framework heteroatom, which is one or more of Mg, Sc, Ti, Zr, V, Nb, Cr, Mo, Mn, Fe, Co, Ni, Cu, Zn, B, Ga, In, Si, Ge, and Sn.

5. The method for preparing the BUCT-10 molecular sieve according to claim 1, comprising the following steps: (1) Aluminum source, phosphorus source, heteroatom source, organic ammonium or amine (R), fluorine source, and water are mixed in the following molar ratios: Al:a P:b M:c R:dF - :e H2O, the corresponding value ranges of a, b, c, d and e are: a = 0.01 ~ 10, b = 0 ~ 10, c = 0.01 ~ 10, d = 0 ~ 10, e = 0 ~ 100, to obtain an initial reaction mixture; (2) crystallizing the initial reaction mixture at 80 to 300° C. for about 1 minute to 5 days; (3) The crystallized product is washed, filtered and dried to obtain BUCT-10 molecular sieve.

6. The method according to claim 5, characterized in that The aluminum source is selected from one or more of aluminum isopropoxide, pseudo-boehmite, aluminum acetate, aluminum nitrate, aluminum sulfate, aluminum hydroxide, aluminum chloride, aluminum oxide, kaolin, and metallic aluminum; the phosphorus source is selected from one or more of phosphoric acid, ammonium dihydrogen phosphate, ammonium phosphate, and phosphorus pentoxide; the heteroatom source is selected from magnesium acetate, magnesium nitrate, magnesium sulfate, magnesium chloride, magnesium carbonate, magnesium oxide, scandium acetate, scandium nitrate, scandium sulfate, scandium chloride, scandium carbonate, scandium oxide, tetraethyl titanate, tetramethyl titanate, titanium nitrate, titanium sulfate, titanium chloride, titanium oxide, zirconium acetate, zirconium nitrate, zirconium sulfate, zirconium chloride, zirconium hypochlorite, zirconium carbonate, zirconium oxide, vanadium nitrate, vanadium sulfate, vanadium chloride, vanadium oxide, niobium nitrate, niobium sulfate, niobium chloride, niobium oxide, chromium acetate, chromium nitrate, chromium sulfate, chromium chloride, chromium carbonate, chromium oxide, molybdenum acetate, molybdenum nitrate, molybdenum sulfate, chlorine One or more of molybdenum chloride, molybdenum carbonate, molybdenum oxide, manganese acetate, manganese nitrate, manganese sulfate, manganese chloride, manganese carbonate, manganese oxide, iron acetate, iron nitrate, iron sulfate, iron chloride, iron carbonate, iron oxide, cobalt acetate, cobalt nitrate, cobalt sulfate, cobalt chloride, cobalt carbonate, cobalt oxide, nickel acetate, nickel nitrate, nickel sulfate, nickel chloride, nickel carbonate, nickel oxide, copper acetate, copper nitrate, copper sulfate, copper chloride, copper carbonate, copper oxide, zinc acetate, zinc nitrate, zinc sulfate, zinc chloride, zinc carbonate, zinc oxide, boric acid, sodium borate, borax, gallium oxide, gallium nitrate, gallium sulfate, gallium chloride, gallium carbonate, gallium hydroxide, indium oxide, indium nitrate, indium sulfate, indium chloride, indium carbonate, indium hydroxide, tetraethyl orthosilicate, tetramethyl orthosilicate, white carbon, silica sol, germanium acetate, germanium chloride, germanium oxide, tin acetate, tin sulfate, tin chloride, and tin oxide.

7. The method according to claim 5, characterized in that The organic ammonium or amine is one or more alkyl quaternary ammonium or alkyl amine, the alkyl carbon number is C1-C5, the alkyl can be substituted or unsubstituted, and the ammonium can be an ammonium salt or ammonium hydroxide; the fluorine source is one or more of HF, NH4F, and NaF.

8. The molecular sieve BUCT-10 according to claim 1 can be used as a catalyst, a catalyst carrier or an adsorption separation material.

9. The BUCT-10 according to claim 8 is a catalyst or a catalyst carrier, which can be applied to catalytic reactions including: Isomerization, alkylation, alcohol to hydrocarbons, synthesis gas to hydrocarbons, selective catalytic oxidation, selective catalytic reduction, dealkylation, transalkylation, hydration, dehydration, polymerization, dimerization, oligomerization, hydrogenation, dehydrogenation, hydrocracking, hydrotreating, hydrofining, hydrodenitrogenation, hydrodesulfurization and combinations thereof.

10. The BUCT-10 molecular sieve according to claim 8 is an adsorption separation material, which can be used in an adsorption separation process based on component molecular size, polarity or ion exchange between components and materials.

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