Pennisetum sinese porous carbon-based solid catalyst and preparation method thereof

A solid catalyst, the technology of giant fungus, applied in chemical instruments and methods, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problem of difficult separation of products and catalysts, and poor recovery ability. , low catalytic efficiency and other problems, to achieve the effect of simple and easy production process, low price and good catalytic efficiency

Active Publication Date: 2019-04-12
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of giant fungus grass porous carbon-based solid catalyst and its preparation method, to solve the problems of difficult separation of product and catalyst, poor recovery ability and low catalytic efficiency

Method used

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  • Pennisetum sinese porous carbon-based solid catalyst and preparation method thereof
  • Pennisetum sinese porous carbon-based solid catalyst and preparation method thereof
  • Pennisetum sinese porous carbon-based solid catalyst and preparation method thereof

Examples

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Effect test

Embodiment 1

[0028] (1) Take 1 g of Jujuncao raw material and put it into the N 2 In a tube furnace, heating in the absence of oxygen was carried out at 300 °C with a heating rate of 5 °C min -1 , the holding time is 2 h, after fully pyrolyzing under normal pressure, it is cooled to room temperature with the furnace, and the pre-carbonized product is obtained after grinding;

[0029] (2) Put 1.0 g of 5-sulfosalicylic acid and 1.0 g of the pre-carbonized product obtained in (1) into a beaker, then add 20 mL of deionized water, stir magnetically for 2 h, and then pour it into an evaporating dish. Dry in an oven at 60 °C to constant weight to obtain a black solid powder, which is the activated precursor mixture;

[0030] (3) Put 2.0 g of the activated precursor mixture in (2) into the N 2 In a tube furnace, oxygen-insulated heating was carried out at 400 °C with a heating rate of 5 °C min -1 , the holding time was 4 h, and after fully pyrolyzing under normal pressure, it was cooled to room...

Embodiment 2

[0033] (1) Take 1 g of Jujuncao raw material and put it into the N 2 In a tube furnace, heating in the absence of oxygen was carried out at 300 °C with a heating rate of 5 °C min -1 , the holding time is 2 h, after fully pyrolyzing under normal pressure, it is cooled to room temperature with the furnace, and the pre-carbonized product is obtained after grinding;

[0034] (2) Take 1.0 g of 5-sulfosalicylic acid and 0.5 g of the pre-carbonized product obtained in (1), put them into a beaker, then add 20 mL of deionized water, stir magnetically for 2 h, pour into an evaporating dish, dried in an oven at 60 °C to constant weight to obtain a black solid powder, and then ground to obtain an activated precursor mixture;

[0035] (3) Put 1.5 g of the activated precursor mixture in (2) into the N 2 In a tube furnace, heating in the absence of oxygen was carried out at 450 °C with a heating rate of 5 °C min -1 , the holding time was 4 h, and after fully pyrolyzing under normal pressu...

Embodiment 3

[0037] (1) Take 1 g of Jujuncao raw material and put it into the N 2 In a tube furnace, oxygen-insulated heating was carried out at 250 °C with a heating rate of 5 °C min -1 , the holding time is 2 h, after fully pyrolyzing under normal pressure, it is cooled to room temperature with the furnace, and the pre-carbonized product is obtained after grinding;

[0038] (2) Take 1.5 g of 5-sulfosalicylic acid and 0.5 g of the pre-carbonized product obtained in (1), put them into a beaker, then add 20 mL of deionized water, stir magnetically for 2 h, pour into an evaporating dish, dried in an oven at 60 °C to constant weight to obtain a black solid powder, and then ground to obtain an activated precursor mixture;

[0039] (3) Put 2.0 g of the activated precursor mixture in (2) into the N 2 In the tube furnace, the oxygen barrier heating was carried out at 500 ℃, and the heating rate was 5 ℃ min -1 , the holding time was 4 h, and after fully pyrolyzing under normal pressure, it was ...

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Abstract

The invention provides a pennisetum sinese porous carbon-based solid catalyst and a preparation method thereof, and belongs to the technical field of solid catalyst preparation. The preparation methodof the pennisetum sinese porous carbon-based solid catalyst comprises the following steps: pyrolyzing pennisetum sinese under normal pressure to obtain a pre-carbonized product, activating the pre-carbonized product by using 5-sulfosalicylic acid to obtain an activated precursor, preparing a pennisetum sinese porous carbon carrier through an anaerobic pyrolysis process, and finally, preparing thepennisetum sinese porous carbon-based solid catalyst by adopting 1,4-phenylenediamine-2,5-disulfonic acid diazonium salt as a sulfonating agent. The prepared catalyst can be used for a hydrolysis reaction of cellulose, and the yield of reducing sugar is high. The preparation method disclosed by the invention is simple and feasible and has high catalytic activity and good heat stability, and the main raw materials are reproducible, are low in cost and are environmentally friendly. The method provides a new way for solid catalyst preparation.

Description

technical field [0001] The invention belongs to the technical field of preparation of solid catalysts, and more specifically relates to a porous charcoal-based solid catalyst and a preparation method thereof. Background technique [0002] Cellulose hydrolysis is the most critical step in the conversion and utilization of biomass resources. For example, when converting to bioethanol or other chemicals, it must first be hydrolyzed into glucose. Traditional cellulose hydrolysis methods mainly include acid hydrolysis, enzymatic hydrolysis, supercritical hydrolysis, etc., but these methods have disadvantages such as serious corrosion of equipment, high cost, and harsh reaction conditions. Therefore, it is necessary to develop a green, efficient, and easy-to-separate heterogeneous solid catalyst. Considering the sources of raw materials and the environment, the use of incomplete carbonization of biomass to prepare carbon-based solid catalysts has certain research and application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J35/10C13K1/02
CPCC13K1/02B01J31/0229B01J35/10
Inventor 靳艳巧陈伟赖春梅钟柔潮程贤甦
Owner FUZHOU UNIV
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