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SCM-9 molecular sieve and preparation method thereof

A technology of SCM-9 and molecular sieves, applied in molecular sieves and base exchange compounds, chemical instruments and methods, inorganic chemistry, etc., can solve problems that have not yet been discovered, and achieve thermal stability, good stability, and good hydrothermal stability of the skeleton structure Effect

Active Publication Date: 2017-06-13
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-9 molecular sieve has been found

Method used

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  • SCM-9 molecular sieve and preparation method thereof
  • SCM-9 molecular sieve and preparation method thereof
  • SCM-9 molecular sieve and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Synthesis of SCM-9 Molecular Sieve

[0033] 205.63g of aluminum nitrate [Al(NO 3 ) 3 9H 2 O] was dissolved in 410.36mL of water, mixed to make solution S, and then 1547.47g of acidic silica sol (SiO 2 ,40wt.%), 91.61g sodium hydroxide (NaOH), 1.7% NaCl, 257.1g tetraethylammonium hydroxide (TEAOH, 25wt%) and 136.06g amantadine (TMAdaOH, purity ≥ 98wt.%) into S, stirred for 0.5h, and precipitated for 3 hours to obtain solution S'; put solution S' at 80°C for hydrothermal treatment for 15h, and added mineralizer hydrofluoric acid (HF, 40wt %, the feeding amount is 0.3% of the total weight of the material) and stirred for 12 hours; put the above-mentioned stirred mixture at 150°C for 15 days to crystallize, and the product was filtered and washed, then dried at 110°C for 5 hours, then heated to 400°C, and roasted at a constant temperature for 12 hours The specific material ratio of the obtained product and the reactant is listed in Table 1, and its X-ray diffraction lin...

Embodiment 2

[0037] Synthesis of SCM-9 Molecular Sieve

[0038] 321.88g of aluminum sulfate [Al 2 (SO 4 ) 3 18H 2 O, purity ≥ 98wt.%] was dissolved in 189.48mL of water, mixed to make solution S, 492.55g acidic silica sol (40wt.%), 21.25g sodium hydroxide (NaOH), accounting for 4.1% of the total weight of the reaction mass KCl And 239.57g of amantadine (TMAdaOH, purity ≥ 98wt.%) was put into S, stirred for 20h to obtain solution S'; solution S' was placed in 90°C for hydrothermal treatment for 10h, and mineralizer hydrofluoric acid (hydrofluoric acid) was added at 110°C HF, 40wt.%, the feeding amount is 1.8% of the total weight of the material) and stirred for 24 hours; the above-mentioned stirred mixture was placed at 200°C for 10 hours of crystallization, and the product was filtered and washed, then dried at 80°C for 8 hours, and then heated to 550°C. The obtained product was roasted at constant temperature for 9 hours. The specific material ratio of the reactants is listed in Table...

Embodiment 3

[0042] Synthesis of SCM-9 Molecular Sieve

[0043] 1189.16g of aluminum nitrate [Al(NO 3 ) 3 9H 2 O] be dissolved in 2549.3mL water, mix and make solution S, then 100.13g acidic silica sol (40wt.%), 224.91g sodium hydroxide (NaOH), account for the NaCl and MgCl of 3.5% of reaction mass gross weight 2 2H 2 O, 553.74g amantadine (TMAdaOH, purity ≥ 98wt.%) and 272.55g triethylamine (TEA) were put into S, stirred for 15h to obtain solution S', and the solution S' was hydrothermally treated at 120°C for 0.5h, and Add mineralizer amine fluoride (NH 4 F, the feeding amount is 3.1% of the total weight of the material) and stirred for 12 hours; put the above stirred mixture at 155°C for crystallization for 9 days, the product was filtered and washed, dried at 80°C for 9 hours, then heated to 650°C, and roasted at a constant temperature for 9 hours. The specific material ratio of the product reactants is listed in Table 1, and its X-ray diffraction lines are shown in Table 4.

[0...

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Abstract

The present invention relates to a kind of SCM-9 molecular sieve and preparation method thereof, mainly solve the technical problem of molecular sieve SCM-9 of new structure not involved in the prior art, the present invention provides a kind of new SCM-9 molecular sieve, by adopting and comprising the following Chemical composition in molar ratio: XO 2 :nY 2 o 3 , 0.002≤n≤0.25, the technical scheme in which the XRD diffraction pattern of the SCM-9 molecular sieve has diffraction peaks at 2θ of 6.56±0.05, 13.18±0.1, 19.83±0.1, 25.48±0.1, and 30.57±0.1 is better The above-mentioned technical problems are solved, and the molecular sieve can be used in the industrial production of methanol to olefins.

Description

technical field [0001] The invention relates to an SCM-9 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, and the pore diameter of zeolite molecular sieves is generally below 2nm, so they are classified for microporous materials. [0003] Zeolite molecular sieve is a crystalline silicate material composed of silicon-oxygen tetrahedron [SiO 4 ] 4- and alumina tetrahedron [AlO 4 ] 5- Connected by sharing oxygen atoms, collectively re...

Claims

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Application Information

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IPC IPC(8): C01B39/46
Inventor 杨为民乔健滕加伟袁志庆
Owner CHINA PETROLEUM & CHEM CORP
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