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Ni-SSZ-13 catalyst, preparation method and application thereof

A technology of catalyst and solvent, which is applied in the field of Ni-SSZ-13 catalyst, preparation and application, which can solve the problems of uneven dispersion of loaded nickel metal, low catalyst stability, high preparation cost, etc., and achieve thermal and hydrothermal stability Strong performance, good stability, and wide adjustable range

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

[0009] One of the technical problems to be solved by the present invention is that the preparation cost of the SSZ-13 material in the prior art is expensive, the dispersion of the loaded nickel metal is not uniform, and the catalyst stability is not high during methanol to olefins, hydrogenation reaction or hydrocarbon cracking reaction, For the technical problem of low catalytic activity, a Ni-SSZ-13 catalyst is provided, which has the advantages of low preparation cost, high catalytic activity and high stability of the loaded metal highly dispersed inside the pores

Method used

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  • Ni-SSZ-13 catalyst, preparation method and application thereof

Examples

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Embodiment 1

[0039] Synthesis of silicon-aluminum CHA molecular sieve materials using nickel amine chelate as a template (directing) agent.

[0040] Weigh 86.98g of aluminum nitrate [Al(NO 3 ) 3 9H 2 O, 0.23mol] was dissolved in 269.1mL of deionized water, after stirring evenly, 178.52g of Ni-TEPA chelate (made by nickel salt and tetraethylenepentamine, n(Ni:TEPA=1:1)) was added, After fully stirring, 49.57g of sodium hydroxide [NaOH, 1.05mol] was added to the above solution to adjust the pH value of the solution between 7 and 8, and 162.5g of silica sol [SiO 2 , 30wt%, 0.84mol], airtight and vigorously stirred until evenly mixed, and after complete mixing, the crystallized mixture was placed in a polytetrafluoroethylene-lined pressure vessel and crystallized at 180°C for 12h, and the product was filtered and washed , after washing, dry at 80°C for 12h, then raise the temperature to 600°C, and roast at constant temperature for 6h to obtain the product, which is denoted as NS-1. The stoi...

Embodiment 2

[0042] Synthesis of silicon-aluminum CHA molecular sieve materials using nickel amine chelate as a template (directing) agent.

[0043] Take by weighing 2211.98g of aluminum sulfate [[Al 2 (SO 4 ) 3 18H 2 O, purity ≥98wt.%, 3.32mol] dissolved in 21219.6mL deionized water and 1230.6mL N,N-dimethylformamide [DMF] after stirring evenly, add 651.66g nickel sulfate [NiSO 4 ·6H 2 O, 8.28mol] and 365.5g of triethylenetetramine [TETA, 2.5mol] were fully stirred, then 198.75g of lithium hydroxide [LiOH, 4.97mol] was added to the above solution to adjust the pH value of the solution between 9 and 10, and stirred Add 19836.4g silica sol [SiO 2 , 40wt%, 132.24mol], airtight and vigorously stirred until uniformly mixed, and after complete mixing, the crystallized mixture was placed in a polytetrafluoroethylene-lined pressure vessel and crystallized at 160°C for 3 days, and the product was filtered and washed , after washing, dry at 100°C for 8h, then raise the temperature to 500°C, a...

Embodiment 3

[0045] Synthesis of silicon-aluminum CHA molecular sieve materials using nickel amine chelate as a template (directing) agent.

[0046] Weigh 6.18g of sodium aluminate [NaAlO 2 , 0.08mol] dissolved in 49.1mL deionized water, after stirring evenly, add 8.92g nickel nitrate [Ni(NO 3 ) 2 ·6H 2 O, 0.04mol] and 6.24g of diethylenetriamine [DETA, 0.06mol] were fully stirred, then 5.57g of sodium hydroxide [NaOH, 0.14mol] was added to the above solution to adjust the pH value of the solution between 8 and 9, and stirred Add 26.71g of silica sol (50wt%, 0.22mmol) in the state, and stir vigorously in an airtight place until the mixture is uniform. After the mixture is completely uniform, the crystallized mixture is placed in a Teflon-lined pressure vessel and crystallized at 130°C for 7 days. , the product was filtered and washed, dried at 90°C for 6h after washing, then heated to 550°C, and roasted at a constant temperature for 6h to obtain the product, which was recorded as NS-3. ...

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PUM

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Abstract

The invention relates to an Ni-SSZ-13 catalyst, a preparation method and application thereof, and mainly solves the technical problems that the preparation cost of an SSZ-13 material in the prior art is expensive, the supported nickel metal diffusion is nonuniform and a methanol-to-olefin catalyst is low in stability and low in catalytic activity. The Ni-SSZ-13 catalyst is prepared from the following components in parts by weight: (1) 0.1 to 20 parts of Ni or an oxide thereof; and (2) 80 to 99.9 parts of an SSZ-13 molecular sieve. The Ni-SSZ-13 catalyst preferably solves the problem, and can be used in industrial production of hydrogenation, hydrocarbon pyrolysis and methanol-to-olefin.

Description

technical field [0001] The invention relates to a Ni-SSZ-13 catalyst, a preparation method and its application, in particular to a method for synthesizing a silicon-aluminum type CHA molecular sieve material by using a nickel amine chelate as a template (directing) agent. Background technique [0002] Due to the wide range of internal pore size distribution and the rich diversity of topological structures, zeolite molecular sieve materials are widely used in the fields of adsorption, heterogeneous catalysis, carriers of various guest molecules, and ion exchange. They are mainly characterized by selective adsorption, and their unique pore system enables them to sieve molecules of different sizes, which is why this type of material is called "molecular sieve". In theory, only materials with adsorption capacity (guest molecule water or template can be removed) can be called microporous materials or molecular sieves. According to the definition of the International Union of Pur...

Claims

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Application Information

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IPC IPC(8): B01J29/76C07C1/20C07C11/04C07C11/06
CPCB01J29/76B01J2229/16B01J2229/18B01J2229/24C07C1/20C07C2529/76C07C11/04C07C11/06Y02P20/52Y02P30/20Y02P30/40
Inventor 杨为民乔健袁志庆王仰东滕加伟
Owner CHINA PETROLEUM & CHEM CORP
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