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Method for jointly producing glycol ether and ethylene glycol diethyl ether by adopting ethylene glycol as raw material

A technology of ethylene glycol diethyl ether and ethylene glycol ethyl ether, which is used in ether preparation, dehydration of hydroxyl-containing compounds to prepare ether, organic chemistry, etc., can solve problems such as transportation difficulties and production site restrictions, and achieve high activity and good stability , high conversion rate and selective effect

Inactive Publication Date: 2014-03-19
HENAN COAL CHEM IND GROUP INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, ethylene oxide is an explosive chemical, and transportation is difficult, so the production site of glycol ether made from ethylene oxide is limited

Method used

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  • Method for jointly producing glycol ether and ethylene glycol diethyl ether by adopting ethylene glycol as raw material
  • Method for jointly producing glycol ether and ethylene glycol diethyl ether by adopting ethylene glycol as raw material
  • Method for jointly producing glycol ether and ethylene glycol diethyl ether by adopting ethylene glycol as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] 1 part of SiO 2 / Al 2 o 3 (mass ratio 80:1), add 0.1-10.0mol / L H + ,Al 3+ and SO 4 2- , Cl - In the modified agent solution composed, it was impregnated in excess for 10 hours, dried at 120°C for 2 hours, and calcined in vacuum at 700°C for 6 hours to obtain powdery catalyst A.

Embodiment 2

[0062] Add 20ml and 4ml of tetrabutyl titanate into 50ml of absolute ethanol, stir for 30 minutes to obtain a mixture, add 1ml of nitric acid and 20ml of absolute ethanol mixture into a, stir for 1 hour, age at 70°C for 3 hours, 120°C After the drying is complete, the solid is obtained, and after being ground into a powder, it is placed in 0.1-10.0mol / L H + ,Al 3+ and SO 4 2- , Cl - After immersing in the modified agent of the composition for 24 hours, drying at 120°C for 6 hours, and calcining in a carbon dioxide atmosphere at 500°C for 4 hours, the powder catalyst B was obtained.

Embodiment 3

[0064] 10 g SiO 2 / Al 2 o 3 (Mass ratio is 25:1) Add 20ml of 0.5-2.0mol / L H + ,Al 3+ and SO 4 2- , NO 3 - Immerse in the modifier solution formed for 12 hours, filter under reduced pressure, dry the filter cake at 120°C, and bake the solid at 800°C for 10 hours in an air atmosphere, then naturally cool to obtain catalyst C.

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Abstract

The invention discloses a method for jointly producing glycol ether and ethylene glycol diethyl ether by adopting ethylene glycol as a raw material and belongs to the technical fields of fine chemicals and catalysis. According to the method, the ethylene glycol and ethyl alcohol or ethylene glycol and diethyl ether or ethylene glycol and ethyl alcohol as well as a diethyl ether mixture are adopted as raw materials, one or more than one of substances adopting H<+1>, Al<3+>, B<3+> as positive ions and adopting SO4<2->, NO3<-1>, NO2<-1>, PO4<3-> and X<-1> (X=F, Cl, Br and I) as negative ions is adopted as a modifier and a substance for modifying a molecular sieve or a metallic oxide is adopted as a catalyst to synthetize the glycol ether and the ethylene glycol diethyl ether. The method has the advantages that the problem of reactant generating of ethylene glycol per se in the reaction of the ethylene glycol and the ethyl alcohol is solved; the glycol ether and the ethylene glycol diethyl ether can be jointly produced at the same time; the generating proportion of the glycol ether and the ethylene glycol diethyl ether can be controlled within a certain range.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals and planning, and relates to a synthesis method of polyol ether compounds, in particular to a synthesis method of ethylene glycol ether and ethylene glycol diethyl ether. Background technique [0002] At present, the production of glycol ether mainly has the following methods: [0003] 1. Ethylene oxide addition method [0004] The method is to synthesize ethylene glycol ether with ethylene oxide and low-carbon alcohols such as ethanol under the action of a catalyst. [0005] [0006] The catalyst used in this method includes acid catalyst, basic catalyst and salt, and there are many kinds. Among them, the acidic catalysts include protonic acids such as BF 3 Heteropolyacids such as phosphomolybdic acid, phosphotungstic acid, silicotungstic acid, etc.; solid acids; basic catalysts include sodium hydroxide, potassium hydroxide, sodium ethoxide, potassium acetate, etc.; salt catalysts in...

Claims

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Application Information

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IPC IPC(8): C07C43/13C07C43/10C07C41/09
CPCC07C41/09C07C43/13C07C43/10
Inventor 章亚东赵立红李刚森李丰张栋魏灵朝李彬张秀全梁政勇李宁李宗耀
Owner HENAN COAL CHEM IND GROUP INST
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