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Catalyst for polyformaldehyde dimethyl ether synthesis

A technology of dimethyl ether and catalyst is applied in the field of catalysts used for synthesizing polyoxymethylene dimethyl ether.

Active 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, and there are problems of low catalyst reaction efficiency and high cost of paraformaldehyde as raw materials , providing a new catalyst for the synthesis of polyoxymethylene dimethyl ether

Method used

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  • Catalyst for polyformaldehyde dimethyl ether synthesis
  • Catalyst for polyformaldehyde dimethyl ether synthesis
  • Catalyst for polyformaldehyde dimethyl ether synthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Preparation of catalyst

[0027] (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 40 grams of 500 mesh AlNiCoTi80, and stir evenly , after adding 300 grams 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 boiling the pellet at 95°C for 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.

[0028] (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 download...

Embodiment 2

[0035] 1. Preparation of catalyst

[0036] (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 40 grams of 500 mesh AlNiCoTi36J, and stir evenly , after adding 300 grams 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 boiling the pellet at 95°C for 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.

[0037] (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 downloa...

Embodiment 3

[0042] 1. Preparation of catalyst

[0043] (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 40 grams of 500 mesh AlNiCoTi40J, and stir evenly , after adding 300 grams 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 boiling the pellet at 95°C for 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.

[0044] (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 downloa...

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Abstract

The invention relates to a catalyst for polyformaldehyde dimethyl ether synthesis. 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 catalyst for polyformaldehyde dimethyl ether synthesis, the catalyst is the hybrid material of a sulfonic acid type polystyrene cation exchange resin and an alloy permanent magnet, the sulfonic acid type polystyrene cation exchange resin comprises a cross-linked polystyrene skeleton and a sulfonic acid group, and the alloy permanent magnet is at least one selected from AlNiCoTi80, AlNiCoTi36J, and AlNiCoTi40J. The 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 used for synthesizing 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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IPC IPC(8): B01J31/38C07C43/30C07C41/56
Inventor 高晓晨顾军民刘文杰高焕新
Owner CHINA PETROLEUM & CHEM CORP
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