Method for preparing hydrophobic organic framework solid base catalyst

A solid base catalyst and organic framework technology, applied in the field of material chemistry, can solve the problems of active center deactivation, low specific surface area, difficult regeneration, etc., achieve good adsorption capacity, increase specific surface area, and low cost

Active Publication Date: 2013-07-03
PETROCHINA CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this invention is to provide a kind of preparation method of hydrophobic organic framework solid base catalyst, overcome the traditional solid base catalyst (alkali metal oxide, hydroxide, hydrotalcite etc.) that exists in the prior art to be sensitive to water, absorb air easily

Method used

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  • Method for preparing hydrophobic organic framework solid base catalyst
  • Method for preparing hydrophobic organic framework solid base catalyst

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Experimental program
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Effect test

Embodiment 1

[0020] Firstly, the mesoporous polydivinylbenzene material, namely PDVB-VI, was synthesized with ethyl acetate solvent.

[0021] Add 2g of divinylbenzene into a reaction kettle containing 0.065g of azobisisobutyronitrile, 30ml of tetrahydrofuran, and 0.467ml of 1-vinylimidazole, take it out after 1 day of hydrothermal treatment at 100°C, open the cover, and evaporate the solvent at room temperature to obtain A new type of solid base material (PDVB-VI) copolymerized with polydivinylbenzene and imidazole with high specific surface area and rich mesoporous structure.

Embodiment 2

[0023] Evaluation of Catalytic Performance and Its Comparison with Traditional Catalytic Materials

[0024] Triglyceryl palmitate and methanol transesterification reaction conditions: Add 0.84g triglyceryl palmitate to a round bottom flask and melt at 65°C, then quickly add 3.76mL methanol, 0.05g catalyst, react at 65°C, 1h , 3h later sampling analysis, methyl dodecanoate as the internal standard.

[0025] The transesterification reaction conditions of cloud mustard oil and methanol: 0.1g catalyst, 2.35mL cloud mustard oil, 5mL methanol were mixed evenly, and then the reaction was completed at 65°C for 2h, and methyl dodecanoate was used as the internal standard.

[0026] Supplementary Table 1 provides the material structure parameters. It can be seen that the novel solid base has a rich nanopore structure and a large specific surface area and pore volume; the conversion rate is close to 100% after catalyzing the transesterification reaction for 1 hour, indicating that the Th...

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Abstract

The present invention relates to a method for preparing a hydrophobic organic framework solid base catalyst. A functional monomer of 4-vinylpyridine or 1-vinylimidazole, a crosslinking agent monomer of divinylbenzene and an initiator of azodiisobutyronitrile are added into an organic solvent for a thermal polymerization reaction, and the hydrophobic organic framework solid base catalyst is obtained after evaporating and drying the solid at room temperature. In the thermal polymerization reaction, the ratio of the total amount of the functional monomer and the crosslinking agent monomer to the organic solvent is 0.67-2.0 (mL/mmol). The ratio of the functional monomer and the crosslinking agent monomer is 0.2-1.0 (mL/mL). The temperature of the solvent thermal polymerization reaction is 80-140 DEG C, and the reaction pressure is 0.5-5 MPa. The method provides the organic framework solid base catalyst which is swellable, large in specific surface area, large in pore volume, stable, and super-hydrophobic.

Description

technical field [0001] The invention relates to the field of material chemistry, in particular to a method for preparing a superhydrophobic organic framework solid base catalyst with rich pore structure and high specific surface area. Background technique [0002] In recent years, with the development of the chemical industry, catalytic technology has attracted more and more attention, especially in the fields of petrochemical and fine chemical industry, which has shown an increasingly prominent and important role. Catalyst is the core of catalytic technology. According to acidity and alkalinity, it can be divided into acid catalyst and base catalyst. The disadvantages of acid catalyst, such as low catalytic efficiency and strong corrosion, limit its large-scale application. Compared with acid catalyst, base catalyst has catalytic activity. High, low corrosion and other advantages, it has important applications in the field of organic synthesis and life sciences, but at pres...

Claims

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Application Information

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IPC IPC(8): B01J31/06B01J35/10C11C3/10C10L1/02
Inventor 苑慧敏褚洪岭张志翔肖丰收王凤荣孟祥举张忠涛李建忠王桂芝徐显明贺德福张宝军张永军万书宝汲永刚刘剑杜海杨春吉白玉洁李文鹏赵晶莹
Owner PETROCHINA CO LTD
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