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Method for preparing mesoporous carbon materials

A mesoporous carbon and mesoporous technology, applied in the field of preparation of mesoporous carbon materials, can solve the problems of unfavorable hydrophobicity and high production cost, achieve good strength, reduce processing cost, and stabilize the structure

Active Publication Date: 2012-09-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the prior art uses a high-temperature calcination method under an inert gas atmosphere. When the structure-directing agent is removed and the mesoporous carbon material is formed, the production cost is relatively high and its hydrophobicity is not conducive to the alkalinity of the subsequent sequence. The problem of metal additive loading, providing a new preparation method of mesoporous carbon materials

Method used

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  • Method for preparing mesoporous carbon materials
  • Method for preparing mesoporous carbon materials
  • Method for preparing mesoporous carbon materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 5.0 g of the synthesized mesoporous polymer material was placed in a muffle furnace, heated from room temperature to 400° C. for 3 hours in an air atmosphere, and kept at 400° C. for 3 hours to obtain a mesoporous carbon material (carrier I).

[0019] Catalyst preparation: Dissolve 0.2g of cesium hydroxide and 0.03g of boric acid in 20mL of water and divide it into two parts, add 10mL of one part to 1.0g of mesoporous carbon material (FDU-14), stir for 6 hours and place it in 80 ℃ oven for 24 hours, put the taken out solid material into another 10mL solution, stir for 6 hours and place it in an 80℃ oven for 24 hours, take it out and raise the temperature from room temperature to 400℃ for 3 hours in nitrogen atmosphere, The temperature was kept at 400° C. for 3 hours to obtain a catalyst material (catalyst I).

[0020] With catalyst I as reaction catalyst, raw material toluene and methyl alcohol are with molar ratio 5: 1, with the speed of 2.0 milliliters / hour and the ni...

Embodiment 2～4

[0022] According to the various steps and conditions of Example 1, the carrier and catalyst were prepared and the catalyst was evaluated, except that the calcination temperature of the carrier was changed. The calcination conditions and evaluation results are listed in Table 1.

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Abstract

The invention relates to a method for preparing mesoporous carbon materials, which is mainly used for solving the problems that in the prior art, when mesoporous carbon materials are prepared, mesoporous high polymer materials are required to be post-processed in the inert atmosphere and at a temperature of over 900 DEG C, therefore, the production cost is high, and when the obtained mesoporous carbon materials as catalyst carriers are used in the side-chain alkylation of toluene and methanol, the toluene conversion rate is low and the aromatic selectivity is low. The technical scheme of the invention is as follows: processing mesoporous high polymer materials for 0.5 to 24 hours at a temperature of 200 to 500 DEG C and in the atmospheric atmosphere, wherein the mesoporous high polymer materials are at least one selected from FDU-14, FDU-15 or FDU-16, thereby solving the problems in the prior art better. The method of the invention can be used for the industrial preparation of catalyst carrier materials used in the side-chain alkylation reaction of toluene and methanol.

Description

technical field [0001] The invention relates to a preparation method of a mesoporous carbon material. Background technique [0002] Alkylation of toluene and methanol is a promising new synthetic route for the production of styrene. In 1967, Sidorenko et al. first used alkali metal ion-exchanged X-type and Y-type zeolites as catalysts to successfully synthesize styrene with toluene and methanol. It has been paid more and more attention by people, and there are more and more researches on it. Compared with the traditional process, this method has the advantages of wide sources of raw materials, low cost, low energy consumption, and less pollution. It can use both petroleum and its processed products, and natural gas. The reaction can be carried out under normal pressure, high temperature and high space velocity, and the catalyst used for the alkylation is X or Y molecular sieve modified by alkali metal hydroxide, boric acid or phosphoric acid. The catalyst used in the dehyd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02
Inventor 唐嘉伟高翔缪长喜
Owner CHINA PETROLEUM & CHEM CORP
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