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Carbon-based solid acid catalyst synthesized by one-step hydrothermal carbonization process

A technology of solid acid catalyst and hydrothermal carbonization, which is applied in the direction of physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, catalyst activation/preparation, etc. It can solve the problems of cumbersome process and achieve simple synthesis process , wide application prospects, good catalytic effect

Inactive Publication Date: 2010-07-14
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Finally, the product needs to be separated from a solution of a large amount of concentrated sulfuric acid, which is also very tedious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, the synthesis of novel carbon-based solid acid:

[0026] Put 5g of furfuraldehyde, 2g of 2-isethionate and 80g of water in a 100ml autoclave, stir and dissolve, tighten the autoclave and place it in an oven at 180°C for heating for 4 hours, Cool to room temperature, open the autoclave, filter, wash, and dry to obtain the acid value of the novel carbon-based solid acid catalyst of 2.3 mmol / g.

Embodiment 2-4

[0028] Except for the following differences, all the other were the same as in Example 1, heated in 5 g of furan formaldehyde, carbonized at 180° C., 2-hydroxyethylsulfonic acid was used according to the ratio in Table 1, and reacted for 4 hours.

[0029] Table 1

[0030] Example

Embodiment 5-12

[0032] Except following difference, all the other are with embodiment 1, and the influence result of different reactants is shown in Table 2.

[0033] Table 2

[0034] Example

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PUM

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Abstract

The invention discloses a carbon-based solid acid catalyst synthesized by one-step hydrothermal carbonization process, belonging to the technical field of chemical synthesis. In the invention, carbonizable compounds and sulfo-containing functional molecules are prepared into aqueous solution, placed in an autoclave, heated at 150-200 DEG C for 4-10 hours in a baking oven, cooled to room temperature, filtered after opening the autoclave, washed and dried to obtain a novel carbon-based solid acid catalyst. The solid acid has the following advantages: the synthesis process is simple and convenient, which can be finished in one step; synthesis cost is low; catalytic effect is good, and the solid acid catalyst has higher catalytic activity to general acid catalyzed reactions such as esterification, condensation, alkylation, etherification, ester exchange and the like; and the catalyst can be used repeatedly.

Description

technical field [0001] The invention relates to a carbon-based solid acid catalyst synthesized by a one-step hydrothermal carbonization method, belonging to the technical field of organic chemical synthesis. Background technique [0002] In today's crisis of energy problems and environmental problems, it has become the goal of modern chemical industry to efficiently generate target products with a small amount of energy without producing unnecessary by-products. Acid catalysts are indispensable in the modern chemical industry and are widely used in the manufacture of various products such as pharmaceuticals, petrochemical products, and polymer products. However, most of the currently used liquid acid catalysts are hydrochloric acid and sulfuric acid. . The liquid catalyst used in the production process needs to be neutralized by alkali, and separated and recovered from the product by removing the salt generated by neutralization. However, a considerable amount of energy is...

Claims

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Application Information

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IPC IPC(8): B01J37/10B01J31/00C07C67/08C07C69/704C07D317/72C07C37/16C07C39/10C07C41/09C07C43/20C10L1/02
Inventor 齐陈泽梁学正孙旭东
Owner SHAOXING UNIVERSITY
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