Catalyst for catalyzing cellulose hydrolysis

A catalytic hydrolysis and catalyst technology, applied in the direction of physical/chemical process catalyst, catalyst activation/preparation, application, etc., to achieve high practical value, low price, and simple preparation

Inactive Publication Date: 2010-06-16
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no patents or literature reports on the application of silica catalysts synthesized by volatilization-induced self-assembly synthesis to catalyze the hydrolysis of cellulose.

Method used

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  • Catalyst for catalyzing cellulose hydrolysis
  • Catalyst for catalyzing cellulose hydrolysis
  • Catalyst for catalyzing cellulose hydrolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 5mmol (1.0417g) TEOS and 0.3mL concentrated nitric acid to 5mL absolute ethanol to prepare solution A; dissolve 0.5g P123 in 5mL absolute ethanol, stir at room temperature to form transparent solution B. Solution A was magnetically stirred at room temperature for 30 min, then slowly added to solution B, and magnetically stirred for 1 h. Finally, the mixed sol was poured into a petri dish and stored at room temperature of 40°C for 2 days. The obtained composite material was calcined in an air atmosphere at 400°C for 4h with a heating rate of 0.5°C / min. Finally, it is ground to 60-80 mesh to obtain the finished catalyst.

Embodiment 2

[0024] Add 6 mmol (1.2450 g) of TEOS and 0.3 mL of concentrated nitric acid to 5 mL of absolute ethanol to prepare solution A. The preparation process of other catalysts is the same as that of catalyst 1.

Embodiment 3

[0026] Add 7 mmol (1.4583 g) of TEOS and 0.6 mL of concentrated nitric acid to 5 mL of absolute ethanol to prepare solution A. The preparation process of other catalysts is the same as that of catalyst 1.

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Abstract

The invention provides a hydrolysis catalyst for cellulose hydrolysis, which can be used for catalyzing and hydrolyzing cellulose into glucose at high selectivity. At 160 DEG C, the hydrolysis ratio of catalyst to cellulose approaches 70%, the hydrolysis capacity is good, and the catalytic efficiency is high. Compared with the reported catalyst, the catalyst of the invention has the advantages of simple preparation and low price. When the catalyst is used for catalyzing cellulose hydrolysis reaction, hydrogen gas does not need to be added additionally, and no noble metals exist, thus the price is low. The invention is characterized in that the precursor of the silicon source can be at least one of the following silicon-containing compounds: tetraethoxysilane (TEOS), tetrapropoxysilane (TPOS), tetramethoxysilane (TMOS) or sodium silicate (Na2SiO3); and the cellulose can be at least one of the following celluloses: microcrystalline cellulose and natural cellulose.

Description

technical field [0001] The invention relates to a catalyst for catalyzing the hydrolysis of cellulose. technical background [0002] The emergence of the "oil crisis" and the environmental and climate change problems brought about by the use of fossil energy have shifted the focus of the world's energy strategy to the research and development of renewable energy. Renewable energy comes from a wide variety of sources, including starch, cooking oil, and cellulose. Obviously, the survival and development of human beings are inseparable from starch and edible oil. Especially in the current situation of increasing food demand, their development and utilization are not advisable and unsustainable. Cellulose is the most widespread renewable resource in nature, and it will not threaten food security. Therefore, using cellulose as a raw material to produce biomass fuel has become an inevitable choice in line with the sustainable development strategy. [0003] Cellulose is a natural...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/08B01J37/00C13K1/02
Inventor 贺泓王华瑜
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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