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A kind of preparation method and application of supported catalyst based on sulfonation reaction

A supported catalyst and sulfonation reaction technology, which is applied in the field of preparation of supported catalysts, can solve the problems of complex preparation process and high energy consumption, and achieve the effects of good thermal stability, high catalytic activity and good stability

Active Publication Date: 2021-08-06
浙江工业大学上虞研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its preparation process is complex and energy-intensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method based on the supported catalyst of sulfonation reaction, comprises the following steps:

[0027] (1) Drying and pulverizing corn stalks to obtain corn stalk powder, which is then mixed and ground with ethanol to obtain a fine powder;

[0028] (2) Mix and stir the fine powder, clay, hydroxymethyl cellulose, basalt fiber, and polyethylene glycol prepared above, and then add them to the mold for compression molding, and the prepared preform is placed in a muffle furnace Calcination treatment at 800°C for 5 minutes in an air atmosphere, cooling in the furnace after completion, and grinding to obtain a catalyst carrier; wherein, the amounts of each component in parts by weight are: 10 parts of fine powder, 2 parts of clay, methylol 1 part of base cellulose, 1 part of basalt fiber, 2 parts of polyethylene glycol;

[0029] (3) using toluene as a raw material and sulfur trioxide as a sulfonating agent, adopting a gas-phase sulfonation method to pre...

Embodiment 2

[0033] A kind of preparation method based on the supported catalyst of sulfonation reaction, comprises the following steps:

[0034] (1) Drying and pulverizing corn stalks to obtain corn stalk powder, which is then mixed and ground with ethanol to obtain a fine powder;

[0035] (2) Mix and stir the fine powder, clay, hydroxymethyl cellulose, basalt fiber, and polyethylene glycol prepared above, and then add them to the mold for compression molding, and the prepared preform is placed in a muffle furnace Calcination treatment at 1000°C for 15 minutes in an air atmosphere, cooling in the furnace after completion, and grinding to obtain a catalyst carrier; wherein, the amounts of each component are in parts by weight: 30 parts of fine powder, 6 parts of clay, methylol Base cellulose 4 parts, basalt fiber 2 parts, polyethylene glycol 3 parts;

[0036] (3) Toluene is used as raw material and sulfur trioxide is used as sulfonating agent to prepare p-toluenesulfonic acid by gas-phase...

Embodiment 3

[0040] A kind of preparation method based on the supported catalyst of sulfonation reaction, comprises the following steps:

[0041] (1) Drying and pulverizing corn stalks to obtain corn stalk powder, which is then mixed and ground with ethanol to obtain a fine powder;

[0042] (2) Mix and stir the fine powder, clay, hydroxymethyl cellulose, basalt fiber, and polyethylene glycol prepared above, and then add them to the mold for compression molding, and the prepared preform is placed in a muffle furnace Calcination treatment at 850°C for 10 minutes in an air atmosphere, cooling in the furnace after completion, and grinding to obtain a catalyst carrier; wherein, the amounts of each component in parts by weight are: 15 parts of fine powder, 3 parts of clay, methylol 2 parts of base cellulose, 1.2 parts of basalt fiber, 2.2 parts of polyethylene glycol;

[0043] (3) using toluene as a raw material and sulfur trioxide as a sulfonating agent, adopting a gas-phase sulfonation method...

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PUM

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Abstract

The invention discloses a preparation method of a supported catalyst based on sulfonation reaction, which specifically comprises the following steps: firstly, the catalyst carrier is prepared by using corn stalks, clay, hydroxymethyl cellulose, basalt fiber and polyethylene glycol as raw materials; Then carry out sulfonation reaction with toluene and sulfur trioxide to obtain p-toluenesulfonic acid; then mix and stir p-toluenesulfonic acid solution, copper sulfate solution, citric acid solution and catalyst carrier, and dropwise add sodium hydroxide solution for precipitation to obtain supported catalyst. The method is simple in operation, low in energy consumption, and the prepared catalyst has high catalytic activity and good stability.

Description

Technical field: [0001] The invention relates to the field of catalyst preparation, in particular to a preparation method and application of a supported catalyst based on sulfonation reaction. Background technique: [0002] Tributyl citrate is a green and environmentally friendly plasticizer, which is widely used in food packaging, medical instrument packaging, daily necessities and children's toys. Tributyl citrate has the advantages of good compatibility, high growth rate, non-toxicity, easy biodegradation and low volatility. It is a substitute for phthalate plasticizers. The preparation method of tributyl citrate is mainly by the esterification reaction of citric acid and n-butanol under the effect of catalyst. For this method, how to prepare high-yield and high-quality product catalyst selection is the key. [0003] Copper p-toluenesulfonate is orange powder, easily soluble in water, ethanol and esters and can be used to catalyze esterification reaction. Chinese paten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/02B01J31/04C07C67/08C07C69/704
CPCB01J31/0225B01J31/04B01J2231/49C07C67/08C07C69/704
Inventor 许萌叶青罗书平
Owner 浙江工业大学上虞研究院有限公司