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Polyformaldehyde dimethyl ether production catalyst

A polyoxymethylene dimethyl ether and catalyst technology, which is applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, organic chemistry and other directions, can solve the problem of high cost of trioxymethylene, low catalyst reaction efficiency, etc. problem, to achieve good yield

Inactive Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is that in the prior art, methanol, methylal and paraformaldehyde are used as reaction raw materials to synthesize polyoxymethylene dimethyl ether, which has the problems of low catalyst reaction efficiency and high cost of paraformaldehyde as raw materials , to provide a new catalyst for the production of polyoxymethylene dimethyl ether, the catalyst has high low-temperature activity, high selectivity, and the catalyst is more suitable for repeated use

Method used

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  • Polyformaldehyde dimethyl ether production catalyst
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  • Polyformaldehyde dimethyl ether production catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Preparation of catalyst

[0021] (1) Polymerization and hybridization: at room temperature, add 144 grams of styrene, 16 grams of divinylbenzene, 1 gram of BPO and 40 grams of toluene into a 1000 ml three-necked flask and stir evenly, then add 500 mesh Dy 3 Fe 5 o 12 40g, stir evenly, add 300g of 1.0w% PVA aqueous solution, then react at 70°C for 3h, 80°C for 1h, and 95°C for 45min under stirring, to obtain a pellet-shaped product, stop stirring, and keep 95°C to cook Ball 30min. All the products in the three-necked flask were poured into water for cleaning. The product was washed with ethanol and then washed with H 2 O was washed, placed in an oven and dried at 80° C. for 4 h to obtain 200 g of catalyst precursor I.

[0022] (2) Sulfonation: Add 200 grams of catalyst precursor I to 400 grams of 1,2-dichloroethane to swell at room temperature for 4 hours, then add 100 grams of H with a purity of 98w%. 2 SO 4 , stirring and downloading at 85°C for 3h, and then ...

Embodiment 2

[0029] 1. Preparation of catalyst

[0030] (1) Polymerization and hybridization: at room temperature, add 144 grams of styrene, 16 grams of divinylbenzene, 1 gram of BPO and 40 grams of toluene into a 1000 ml three-necked flask and stir evenly, then add 500 mesh Ho 3 Fe 5 o 12 40g, stir evenly, add 300g of 1.0w% PVA aqueous solution, then react at 70°C for 3h under stirring, 1h at 80°C, and 45min at 95°C to obtain a pellet-shaped product, stop stirring, and boil at 95°C Ball 30min. All the products in the three-necked flask were poured into water for cleaning. The product was washed with ethanol and then washed with H 2 O was washed, placed in an oven and dried at 80° C. for 4 h to obtain 200 g of catalyst precursor I.

[0031] (2) Sulfonation: Add 200 grams of catalyst precursor I to 400 grams of 1,2-dichloroethane to swell at room temperature for 4 hours, then add 100 grams of H with a purity of 98w%. 2 SO 4 , stirring and downloading at 85°C for 3h, and then at 110°C...

Embodiment 3

[0036] 1. Preparation of catalyst

[0037] (1) Polymerization and hybridization: at room temperature, add 144 grams of styrene, 16 grams of divinylbenzene, 1 gram of BPO and 40 grams of toluene to a 1000 ml three-necked flask and stir evenly, then add 500 mesh Er 3 Fe 5 o 12 40g, stir evenly, add 300g of 1.0w% PVA aqueous solution, then react at 70°C for 3h under stirring, 1h at 80°C, and 45min at 95°C to obtain a pellet-shaped product, stop stirring, and boil at 95°C Ball 30min. All the products in the three-necked flask were poured into water for cleaning. The product was washed with ethanol and then washed with H 2 O was washed, placed in an oven and dried at 80° C. for 4 h to obtain 200 g of catalyst precursor I.

[0038] (2) Sulfonation: Add 200 grams of catalyst precursor I to 400 grams of 1,2-dichloroethane to swell at room temperature for 4 hours, then add 100 grams of H with a purity of 98w%. 2 SO 4 , stirring and downloading at 85°C for 3h, and then at 110°C f...

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Abstract

The invention relates to a polyformaldehyde dimethyl ether production catalyst and a preparation method thereof. In the prior art, with the application of methanol, methylal and paraformaldehyde as reaction raw materials to synthesize polyformaldehyde dimethyl ether, the activity and the selectivity of the catalyst are low. A purpose of the present invention is mainly to solve the problems in the prior art. The technical scheme of the present invention comprises that by using the polyformaldehyde dimethyl ether production catalyst, the catalyst is the hybrid material of a sulfonic acid type polystyrene cation exchange resin and a permanent magnetic ferrite, the sulfonic acid type polystyrene cation exchange resin comprises a cross-linked polystyrene skeleton and a sulfonic acid group, and the permanent magnetic ferrite is at least one selected from Dy3Fe5O12, Ho3Fe5O12, and Er3Fe5O12. With the technical scheme, the problems in the prior art are well solved. The polyformaldehyde dimethyl ether production catalyst of the present invention can be used in the industrial production of polyformaldehyde dimethyl ether.

Description

technical field [0001] The invention relates to a catalyst for the production of polyoxymethylene dimethyl ether. Background technique [0002] In recent years, with the deepening influence of the industrial revolution and my country's unique resource pattern of "more coal, less oil, and gas", my country's oil resources have become increasingly tense, and the pressure on oil supply has increased unprecedentedly. It is estimated that in the next 10 to 20 years, my country's oil supply rate will only be ~50%. How to use our country's rich coal resources to solve our country's energy crisis has become an urgent problem for scientific researchers. Therefore, the development of new oil substitutes from coal-based methanol has attracted increasing attention. [0003] DME was first proposed as a diesel additive. However, due to its poor cold start performance, high vapor pressure at room temperature, and easy air resistance, the cost of DME as an alternative fuel for vehicles has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28B01J31/10C07C41/56C07C43/30
Inventor 高晓晨杨为民刘文杰顾军民高焕新
Owner CHINA PETROLEUM & CHEM CORP
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