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SCM-12 molecular sieve and preparation method thereof

A molecular sieve and Z2O5 technology, applied in molecular sieve catalysts, including molecular sieve catalysts, molecular sieves and alkali-exchanged phosphates, etc., can solve problems that have not yet been discovered, and achieve the effects of thermal stability of the skeleton structure, good hydrothermal stability, and high crystallinity

Active Publication Date: 2018-03-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no material with the same X-ray diffraction crystal structure as SCM-12 molecular sieve has been found

Method used

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  • SCM-12 molecular sieve and preparation method thereof
  • SCM-12 molecular sieve and preparation method thereof
  • SCM-12 molecular sieve and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Synthesis of SCM-12 Molecular Sieve

[0034] 126.35g of zinc nitrate [Zn(NO 3 ) 2 ·6H 2 O] and 31.84g of aluminum sulfate [Al 2 (SO 4 ) 3 18H 2 O, purity ≥98wt.%] was dissolved in 410.36mL of water and 319.58mL of N,N-dimethylformamide [DMF] to make solution S, and 147.45g of phosphoric acid [H 3 PO 4 ,85wt.%], 27.51g tetraethylammonium hydroxide [TEAOH, 25wt%] and 160.85g of 1,2-bis(2-aminoethoxy)ethane [1,2-BEAE, purity ≥98wt. %] into S, stirred for 0.5h, and precipitated for 7h to obtain solution S', then put 31.16g of sodium hydroxide [NaOH] into S' for pretreatment at 80°C for 12h, and added mineralizer at 100°C Hydrofluoric acid [HF, 40wt.%] 70.39mL, closed and stirred for 9h. The above-mentioned stirred mixture was placed at 120°C for 14 days of crystallization, and the product was filtered and washed, dried at 80°C for 5 hours, then heated to 450°C, and roasted at a constant temperature for 12 hours to obtain the product. The specific material ratio of ...

Embodiment 2

[0039] Synthesis of SCM-12 Molecular Sieve

[0040] 11.91g of zinc sulfate [ZnSO 4 ·7H 2 O] and 2.36g of aluminum nitrate [Al(NO 3 ) 3 9H 2 O] was dissolved in 298.55mL of N,N-dimethylacetamide [DEF], mixed to make solution S, and 41.22g of ammonium dihydrogen phosphate [NH 4 h 2 PO 4 ], 21.16g of tetrapropylammonium hydroxide [TPAOH, 25wt%] and 19.75g of 1,2-bis(2-aminoethoxy)ethane [1,2-BEAE, purity ≥ 98wt.%] input In S, stir for 20 hours, sink for 3 hours to obtain solution S', then put 31.16g of potassium hydroxide [KOH] into solution S', stir well, place it at 70°C for hydrothermal treatment for 30h, and add ore at 110°C Chemical agent hydrofluoric acid [HF, 40wt.%] 39.65mL, closed and stirred for 5h. The above-mentioned stirred mixture was placed at 200°C for 10 hours to crystallize, the product was filtered and washed, dried at 80°C for 8 hours, then heated to 550°C, and roasted at a constant temperature for 9 hours to obtain the product. The specific material r...

Embodiment 3

[0045] Synthesis of SCM-12 Molecular Sieve

[0046] 1098.23g of zinc nitrate [Zn(NO 3 ) 2 ·6H 2 O] and 998.61g of aluminum nitrate [Al(NO 3 ) 3 9H 2 O] was dissolved in 1949.10mL of ethylene glycol and 1212.37mL of water, mixed to make solution S, and 666.88g of diammonium hydrogen phosphate [(NH 4 ) 2 HPO 4 ] and 468.32g of 1,2-bis(2-aminoethoxy)ethane [1,2-BEAE, purity ≥ 98wt.%] were put into S, stirred for 10h, and precipitated for 10h to obtain solution S', then Put 97.35g of lithium hydroxide [LiOH] into S' for hydrothermal treatment at 120°C for 3.5h, and add mineralizer amine fluoride [NH at 120°C 4 F] 239.61g, sealed and stirred for 12h. The above stirred mixture was placed at 155°C to crystallize for 7 days. The product was filtered and washed, then dried at 80°C for 9 hours, then heated to 650°C, and roasted at constant temperature for 9 hours. The diffraction data are shown in Table 4.

[0047] Table 4

[0048] 2theta(°)

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Abstract

The invention relates to an SCM-12 molecular sieve and a preparation method thereof, mainly aiming at solving the technical problems of an SCM-12 molecular sieve with a novel structure which is not related in the prior art. The invention provides a novel SCM-12 molecular sieve with an open framework structure. The SCM-12 molecular sieve is prepared from the following chemical components accordingto the following mol ratio: x(XO) to y(Y2O3): z(Z2O5), wherein X is at least one of elements including manganese, magnesium, nickel, copper, zinc and the like; Y is at least one of elements includingaluminum, boron, gallium and the like; Z is a phosphorus element; x is greater than or equal to 0.01 and less than or equal to 100; y is greater than or equal to 0.01 and less than or equal to 100; zis greater than or equal to 0.01 and less than or equal to 100; an XRD (X-Ray Diffraction) pattern of the SCM-12 molecular sieve has diffraction peaks when 2theta is equal to 9.66+ / -0.05, 11.31+ / -0.1,15.21+ / -0.1, 20.59+ / -0.1, 26.65+ / -0.1, 29.11+ / -0.1, 34.23+ / -0.1 and 38.16+ / -0.1; by adopting the technical scheme, the technical problems are solved.

Description

technical field [0001] The invention relates to a new hollow skeleton structure SCM-12 molecular sieve and a preparation 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 the following three categories according to their pore diameters: materials with a pore diameter less than 2nm are microporous materials (micropore materials); materials with a pore diameter between 2 and 50nm are mesopore materials; materials with a pore diameter greater than 50nm are macropore materials (macropore materials), and the pore diameter of zeolite molecular sieves is generally below 2nm, so they are classified as microporous material. [0003] Zeolite molecular sieve is a crystalline silicate material composed of silicon-oxygen tetrahedron [SiO 4 ] 4- and alumina tetrahedron [AlO 4 ] 5- ...

Claims

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Application Information

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IPC IPC(8): C01B39/54B01J29/84C07C1/20C07C15/02
CPCB01J29/84C01B39/54C01P2002/72C07C1/20C07C2529/84C07C15/02Y02P30/20Y02P30/40
Inventor 杨为民乔健滕加伟王仰东
Owner CHINA PETROLEUM & CHEM CORP
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