Metal element-containing compound molecular sieve and preparation method thereof

A technology of metal elements and molecular sieves, applied in the direction of hydrocarbon production from oxygen-containing organic compounds, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of complex structure distribution, less total amount of strong and weak acid centers, and low catalytic activity, and achieve good performance. The effect of synergistic effect, good stability, and good technical effect

Active Publication Date: 2014-10-22
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] One of the technical problems to be solved by the present invention is the single structure of the molecular sieve porous material, less total amount of strong and weak acid centers, and low catalytic activity. A compound mol

Method used

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  • Metal element-containing compound molecular sieve and preparation method thereof
  • Metal element-containing compound molecular sieve and preparation method thereof
  • Metal element-containing compound molecular sieve and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0035] [Example 1]

[0036] Synthesis of composite molecular sieve containing metal elements

[0037] According to the formula 0.5Al:1.4P:0.5TEA:30H 2 O:0.15Zn Weigh the reaction raw materials.

[0038] First, 4.49g aluminum sulfate, 2.42g orthophosphoric acid, 0.61g zinc nitrate and 7.73ml deionized water are mixed thoroughly to form a uniform gel. Under stirring, add 0.23g of triethylamine, and wait for the M-AlPO molecular sieve synthesis solution to mix After uniformity, put 140.40 grams of ZSM-5 molecular sieve (particle size 200μm, silicon-aluminum ratio 18) into the M-AlPO molecular sieve synthesis solution according to liquid / solid=0.25, and finally 150.65 milliliters of deionized water, fully stirred to form a crystalline mixture liquid. The crystallization mixture obtained above was crystallized at 130°C and 170°C for 5 hours and 7 days, respectively. The product was centrifuged to obtain a solid product, which was dried in an oven at 110°C overnight to obtain the pro...

Example Embodiment

[0040] [Example 2]

[0041] Synthesis of composite molecular sieve containing metal elements

[0042] According to formula 2Al:12.9P:6.5TEA:50H 2 O:0.75Ga Weigh the reaction raw materials.

[0043] Firstly, 7.50g aluminum nitrate, 14.87g orthophosphoric acid, 3.13g gallium nitrate and 6.77ml deionized water are thoroughly stirred and mixed to form a uniform gel. Under stirring, 6.58g TEA is added, and after the M-AlPO molecular sieve synthesis solution is evenly mixed According to liquid / solid=0.13, 167.88 grams of ZSM-5 molecular sieve (particle size 20μm, silicon-to-aluminum ratio of 113) is poured into the M-AlPO molecular sieve synthesis solution, and finally 70.20 ml of deionized water is fully stirred to form a crystallization mixture. The crystallization mixture obtained above was crystallized at 60°C and 180°C for 10 days and 5 days, respectively. The product was centrifuged to obtain a solid product, which was dried in an oven at 110°C overnight to obtain the product, which...

Example Embodiment

[0045] [Example 3]

[0046] Synthesis of composite molecular sieve containing metal elements

[0047] According to the formula 0.1Al:0.1P:10.0DEA:100H 2 O:0.01Ag Weigh the reaction raw materials.

[0048] First, 2.62 g pseudo-boehmite, 0.23 g orthophosphoric acid, 0.03 g silver nitrate and 35.96 ml deionized water are thoroughly stirred and mixed to form a uniform gel. Under stirring, add 12.02 g TEA, and wait until the M-AlPO molecular sieve is synthesized. After mixing uniformly, put 457.74 grams of ZSM-5 molecular sieve (particle size 500μm, silicon-aluminum ratio 27) into the M-AlPO molecular sieve synthesis solution according to liquid / solid=1:9, and finally 549.29 milliliters of deionized water. Crystallization mixture. The crystallization mixture obtained above was crystallized at 80°C and 160°C for 7 days and 10 days, respectively, and the product was centrifuged to obtain a solid product, which was dried in an oven at 110°C overnight to obtain the product. The XRD test sh...

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Abstract

The invention relates to a metal element-containing compound molecular sieve and a preparation method thereof. The technical problems of single structure distribution, small total amount of strong and weak acid sites, low catalytic activity and low stability of molecular sieve cellular materials in the prior art are mainly solved. The metal element-containing compound molecular sieve comprises 1-99wt% of a ZSM-5 molecular sieve and 1-99wt% of an M-AlPO molecular sieve, wherein the M-AlPO molecular sieve contains a metal element M and an AlPO molecular sieve; the metal element M is at least one of IIIA group, IB group, IIB group or IIIB group metal elements; and the AlPO molecular sieve is at least one of AlPO-4, AlPO-5, AlPO-8, AlPO-11 and AlPO-18. The metal element-containing compound molecular sieve well solves the problems, and can be used in the industrial production of methanol downstream products.

Description

technical field [0001] The invention relates to a composite molecular sieve containing metal elements and a synthesis method thereof. Background technique [0002] Porous materials are a class of solid compounds with a regular pore structure. According to the definition of the International Union of Pure and Applied Chemistry (IUPAC), porous materials can be divided into three categories according to their pore diameters: materials with pore diameters less than 2 nm are microporous materials (micropore materials); materials with a pore size between 2 and 50 nm are mesopore materials; materials with a pore size larger than 50 nm are macropore materials, and zeolite molecular sieves are microporous materials. [0003] The molecular sieve framework is composed of silicon-oxygen tetrahedrons [SiO 4 ] 4- and alumina tetrahedron [AlO 4 ] 5- Connected by sharing oxygen atoms, collectively referred to as TO 4 Tetrahedron (primary structural unit). Its skeleton can also be see...

Claims

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Application Information

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IPC IPC(8): B01J29/84C07C1/20C07C11/04C07C11/06C07C15/04C07C15/06C07C15/08
CPCY02P20/52Y02P30/20Y02P30/40
Inventor 乔健肖景娴陈希强滕加伟杨为民
Owner CHINA PETROLEUM & CHEM CORP
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