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Large particle resin catalyst, and preparation method and applications thereof

A catalyst and large particle technology, applied in chemical instruments and methods, physical/chemical process catalysts, ether preparation, etc., can solve the problems of easy detachment of sulfonic acid groups, low catalyst strength, poor catalytic activity, etc., and achieve high reactivity , High exchange capacity, evenly distributed effect

Active Publication Date: 2017-04-05
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are that the strength of the catalyst prepared by this method is low, the sulfonic acid group is easy to fall off, the exchange equivalent is low, the catalytic activity is poor, and the service time is short

Method used

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  • Large particle resin catalyst, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 (catalyst C-1):

[0025] (1) Polymerization: In a 10-liter stainless steel stirred tank with a reflux condensing device, add 4500g water, 35g polyvinyl alcohol, 15g hydroxypropyl methylcellulose, 3.9g polyacrylamide, 0.4g methylene blue, Heat and stir to dissolve all additives in the kettle completely. Raise the temperature to 65°C, then add an organic phase mixture consisting of 810g styrene, 470g divinylbenzene, 650g n-hexane and 10g benzoyl peroxide, stir and raise the temperature to 85°C, and react for 10 hours.

[0026] (2) Pore structure purification: filter the reaction product, place the obtained polymer white balls in deionized water at 90°C, boil under reduced pressure for 6 hours under a pressure of 0.1MPa, wash twice with deionized water, and dry at room temperature. 920 g of white balls were obtained. 52% of them have a particle size range of 3mm-5mm.

[0027] (3) Sulfonation: In a 10-liter enamel stirred tank, add 700 g of dry polymer white...

Embodiment 2

[0029] Embodiment 2 (catalyst C-2):

[0030] (1) Polymerization: In a 10-liter stainless steel stirred tank with a reflux condensing device, add 5000g water, 41g polyvinyl alcohol, 13g hydroxypropyl methylcellulose, 3.6g polyacrylamide, 0.7g methylene blue, Heat and stir to dissolve all additives in the kettle completely. Raise the temperature to 68°C, then add an organic phase mixture consisting of 920g styrene, 450g divinylbenzene, 680g n-hexane and 11g benzoyl peroxide, stir and raise the temperature to 85°C, and react for 10 hours.

[0031] (2) Pore structure purification: filter the reaction product, place the obtained polymer white balls in deionized water at 90°C, boil under reduced pressure for 6 hours under a pressure of 0.1MPa, wash twice with deionized water, and dry at room temperature. 870 g of white balls were obtained. 61% of them have a particle size range of 3mm-5mm.

[0032] (3) Sulfonation: In a 10-liter enamel stirred tank, add 700 g of dry polymer white...

Embodiment 3

[0034] Embodiment 3 (catalyst C-3):

[0035](1) Polymerization: In a 10-liter stainless steel stirred tank with a reflux condensing device, add 4500g water, 30g polyvinyl alcohol, 15g hydroxypropyl methylcellulose, 4.0g polyacrylamide, 0.4g methylene blue, Heat and stir to dissolve all additives in the kettle completely. Raise the temperature to 65°C, then add an organic phase mixture consisting of 810g styrene, 470g divinylbenzene, 650g benzene and 10g benzoyl peroxide, stir and raise the temperature to 85°C, and react for 10 hours.

[0036] (2) Pore structure purification: filter the reaction product, place the obtained polymer white balls in deionized water at 90°C, boil under reduced pressure for 6 hours under a pressure of 0.1MPa, wash twice with deionized water, and dry at room temperature. 910 g of white balls were obtained. 52% of them have a particle size range of 3mm-5mm.

[0037] (3) Sulfonation: In a 10-liter enamel stirred tank, add 700 g of dry polymer white b...

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Abstract

The invention relates to the field of resin catalyst preparation, and specifically relates to a large particle resin catalyst, and a preparation method and applications thereof. The preparation method comprises the following steps: (1) polymerization: taking styrene and polyvinyl monomers as the raw materials, and carrying out suspension copolymerization in the presence of a dispersant, a water phase polymerization inhibitor, a pore forming agent, and an initiator; (2) purifying the pore structure; and (3) carrying out sulfonation. The prepared large particle resin catalyst has the advantages of high strength and proper specific area, specific pore volume, stability, and activity, and can be applied to hydration of olefins, hydrolysis of ethers, esterification, etherification, and condensation reactions.

Description

technical field [0001] The invention relates to the field of resin catalyst preparation, in particular to a large particle resin catalyst, a preparation method and an application thereof. Background technique [0002] Polystyrene series strongly acidic cation exchange resin is a kind of solid polymer acid, which is obtained by copolymerization of styrene and divinylbenzene, and then obtained by sulfonation. It is widely used in hydration of olefins and ethers. In hydrolysis, esterification, etherification, condensation and other reactions, it is an important catalyst in the fields of petrochemical, fine chemical and pharmaceutical industries. At present, technical research is mainly devoted to the study of nano-scale or micro-scale microspheres, but there is a lack of attention and technical research on large-particle etherification catalysts. Compared with small particles, large particle etherification catalysts have the advantage that they can be directly packed in fixed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/10B01J35/10C08F212/08C08F212/36C08F2/20C08F8/36C07C43/04C07C41/01
Inventor 侯磊杨忠梅吕爱梅朱相春李玉田孙丛丛
Owner CHINA PETROLEUM & CHEM CORP
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