Carbon-based solid sulfonic acid preparation method using bagasse

A technology of bagasse charcoal and bagasse, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problems of long time, high energy consumption, long and complicated processes and other problems, to achieve the effect of short reaction time, simple preparation process and high yield

Inactive Publication Date: 2013-06-19
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These processes of first treatment, post-carbonization, and re-sulfonation are tedious and complicated, take a long time, and consume high energy. We directly mix bagasse, the waste from sugar factories, with concentrated sulfuric acid, heat and stir, and keep warm for a certain period of time. At the same time, dehydration, carbonization, and sulfonation are carried out. The reaction process is greatly simplified, and at the same time, carbon-based solid sulfonic acid with comparable performance can be obtained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Install an electric stirrer, a thermometer and a water separation and reflux device on a 100mL three-necked flask, add 10mL of concentrated sulfuric acid and 5g of bagasse, heat and stir, and react at 180°C for 40 minutes. The reaction solution was directly poured out, filtered and washed to obtain 3.6 g of a black solid. The acid value is 1.50mmol / g.

Embodiment 2

[0016] Install an electric stirrer, a thermometer and a water separation and reflux device on a 250mL three-necked flask, add 20mL of concentrated sulfuric acid and 10g of bagasse, heat and stir, and react at 200°C for 1 hour. The reaction solution was directly poured out, filtered, and washed to obtain 6.0 g of a black solid. The acid value is 2.25mmol / g.

Embodiment 3

[0018] Concentrated sulfuric acid multiplexing experiment. Collect the water-washed filtrate in Example 2, distill and concentrate to obtain 15 mL of concentrated sulfuric acid, add 10 g of bagasse, heat and stir, and react at 170° C. for 30 minutes. The reaction solution was directly poured out, filtered, and washed to obtain 5.5 g of a black solid. Acid value 0.5mmol / g.

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PUM

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Abstract

The invention relates to a carbon-based solid sulfonic acid preparation method using bagasse. Carbon-based solid sulfonic acid prepared in the method can be used in reactions which need acid catalysis. The preparation method includes the steps that: concentrated sulfuric acid and the bagasse are mixed, heated, stirred, and partially carbonized, and then filtered to obtain solid powder. The solid powder is washed repeatedly to obtain the bagasse carbon-based solid sulfonic acid. The preparation method has the advantages of being simple and quick in operation, simple in separation, high in product yield, and convenient to complement in an industrial mode, and the like, and providing a novel way for development and utilization of the bagasse, namely a byproduct of the sugar industry.

Description

technical field [0001] The invention relates to a method for preparing carbon-based solid sulfonic acid through bagasse, belonging to the technical field of preparing solid acid. Background technique [0002] Today's world economic development relies mainly on fossil resources. With the gradual consumption of fossil resources and their excessive use, energy shortages and serious environmental problems have been caused. The vigorous development of renewable energy has attracted people's attention. Biomass is a resource-rich renewable energy source, including all animals, plants and microorganisms, as well as the organic matter derived, excreted and metabolized by these living substances. [0003] Bagasse is an important biomass resource and a major by-product of the sugar industry. Bagasse components are mainly 46.32% cellulose, 30.50% hemicellulose, 21.84% lignin, and 0.54% ash. At present, bagasse is mainly used in animal feed development, edible fungus cultivation, bioga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02
Inventor 郭明林刘晓娟高会鹏殷雪雁张西娟
Owner TIANJIN POLYTECHNIC UNIV
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