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Polyoxymethylene dimethyl ether catalyst

A dimethyl ether and catalyst technology, applied in the field of polyoxymethylene dimethyl ether catalyst, can solve the problems of high cost of paraformaldehyde, low catalyst reaction efficiency, etc., and achieve the effect of good yield

Active Publication Date: 2019-10-08
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 , providing a new polyoxymethylene dimethyl ether catalyst

Method used

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  • Polyoxymethylene dimethyl ether catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Preparation of catalyst

[0026] (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 BaFe 12 o 19 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.

[0027] (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 11...

Embodiment 2

[0034] 1. Preparation of catalyst

[0035] (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 Pm 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.

[0036](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 ...

Embodiment 3

[0041] 1. Preparation of catalyst

[0042] (1) Polymerization and hybridization: at room temperature, add 144 g of styrene, 16 g of divinylbenzene, 1 g of BPO and 40 g of toluene into a 1000 ml three-necked flask and stir evenly, then add 500 mesh Sm 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.

[0043] (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 for 2h...

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Abstract

The invention relates to a catalyst for polyoxymethylene dimethyl ether. The catalyst is mainly used for solving the problem of processes for synthesizing the polyoxymethylene dimethyl ether from methanol, methylal and paraformaldehyde in the prior art that catalysts are low in activity and low in selectivity. Through adopting the technical scheme that the catalyst for the polyoxymethylene dimethyl ether is a hybrid material of sulfonic acid type polystyrene cation exchange resin and permanent-magnetic ferrite, the sulfonic acid type polystyrene cation exchange resin comprises a crosslinked polystyrene skeleton and a sulfonic acid group, and the permanent-magnetic ferrite is at least one selected from BaFe12O19, Pm3Fe5O12 and Sm3Fe5O12, the catalyst can be applied to the industrial production of the polyoxymethylene dimethyl ether.

Description

technical field [0001] The invention relates to a polyoxymethylene dimethyl ether catalyst. 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 increased significant...

Claims

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Application Information

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