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Hydrogen pillared saponite and preparation method and application thereof

A technology of layered saponite and pillared saponite, which is applied in the field of hydrogen-type pillared saponite, can solve the problems of complex preparation methods, cumbersome steps, and affecting product performance, and achieve simplified preparation process, simplified preparation process, and good industrial scale-up Effect

Active Publication Date: 2016-08-03
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the current preparation method of pillared saponite, there are many preparation steps, the preparation methods are also relatively complicated, and the operation requirements are fine. In the middle of the preparation process, steps such as drying, grinding, redispersing or roasting are required, which not only affects the performance of the product, Moreover, because the intermediate after the drying step needs to be ground in the next preparation step to ensure higher dispersion requirements, not only the steps are cumbersome, but also the preparation cost is increased, which limits its application development.

Method used

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  • Hydrogen pillared saponite and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0060] Dissolve 99.5g of sodium metasilicate nonahydrate, 4.8g of sodium hydroxide, and 82.68g of sodium carbonate in 500g of water to make lye, then take 60.9g of magnesium chloride hexahydrate and 12.1g of aluminum chloride hexahydrate in 50g of water to make Salt solution, slowly drop the salt solution into the above alkaline solution at 60°C to obtain an initial gel with a synthetic saponite layer charge of 1.0 (pH 10.58), then continue to age for 30 minutes, put it into a 1L autoclave, and heat it at 300°C Crystallized for 48h. The obtained product was centrifuged and washed with deionized water until it was nearly neutral to obtain a stesterite wet cake, which was denoted as Na-MgSP (moisture content: 80% by weight).

preparation example 2

[0062] Take 99.5g sodium metasilicate nonahydrate, 4.8g sodium hydroxide, 82.68g sodium carbonate dissolved in 500g water to make lye, then take 12.1g aluminum chloride hexahydrate, 72.7g nickel chloride hexahydrate dissolved in 50g water Make a salt solution, slowly drop the salt solution into the above alkali solution at 60°C to obtain an initial gel with a synthetic saponite layer charge of 1.0 (pH 12.10), then continue to age for 30 minutes, put it into a 1L autoclave, and Crystallized at 300°C for 48h. The obtained product was centrifuged and washed with deionized water until it was nearly neutral to obtain a nickel saponite wet cake, which was denoted as Na-NiSP (moisture content: 80% by weight).

[0063] Columnizing agent preparation example 1

[0064] In the state of heating and stirring, add dropwise 1M sodium hydroxide solution to the 0.4M aluminum chloride solution, and finally make the OH - / Al 3+ =2.3, the heating temperature is 80°C, and the aging time is 12h....

Embodiment 1

[0068] Dissolve cetyltrimethylammonium bromide with deionized water, then add above-mentioned soapstone wet cake Na-MgSP, make cationic surfactant / saponite dry basis (g / g) (saponite dry basis refers to soapstone with dry weight basis) ratio is 0.06, stirred to form a uniform slurry (saponite dry basis mass concentration is 1%), stirred at 20 ° C for 2h, centrifuged to obtain the first exchanged saponite;

[0069] Take high polymer aluminum solution Al 13 7+ , disperse the soapstone after the first exchange in it, make aluminum / saponite dry basis = 2mmol / g, heat to 60°C, ion exchange for 1h under the condition of high-speed stirring, then wash with deionized water, and dry the soapstone obtained by centrifugation , roasted to obtain hydrogen-type aluminum pillar saponite, denoted as HA-MgSP-1.

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Abstract

The invention provides hydrogen pillared saponite. Total specific surface area of the hydrogen pillared saponite is above 390 m<2> / g, and total pore volume is above 0.4 cm<3> / g. The invention provides a method for preparing the hydrogen pillared saponite. The method comprises the following steps: in the presence of an aqueous solvent, a sodium saponite raw material is contacted with a cation surfactant to carry out first exchange; after the first exchange, the reaction product is contacted with a pillaring agent to carry out second exchange; after the second exchange, drying and roasting are carried out. The invention provides an application of the hydrogen pillared saponite in the field of acid catalysis. The hydrogen pillared saponite has large total specific surface area and large total pore volume. According to the preparation method, the hydrogen pillared saponite can be directly prepared without ammonia exchange. The prepared hydrogen pillared saponite can be directly used as a catalyst or a catalyst acid component.

Description

technical field [0001] The invention relates to a hydrogen-type laminarite, a preparation method of the hydrogen-type laminarite, and an application of the hydrogen-type laminarite in the field of acid catalysis. Background technique [0002] Pillar saponite is a kind of molecular sieve microporous material with two-dimensional gallery channel structure and suitable acid center, high thermal stability, and possesses B acid required for catalytic reactions such as isomerization, cracking and alkylation Center, has been extensively studied in the field of acid catalysis. [0003] Zhao Xiaohong et al. ("Synthesis, Characterization and Catalytic Performance of N-Decane Hydrogen Isomerization of Pillar Saponite", Chemical Journal of Chinese Universities, No. 32, March 2011) reported a hydrothermal preparation of Pillar soap The method of rock, the method comprises the crystallization of silicon source, aluminum source and magnesium source under hydrothermal conditions to generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26
Inventor 赵效洪李景金环年石玉林马辉李丽高浩华艾军朱豫飞
Owner CHNA ENERGY INVESTMENT CORP LTD
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