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Macropore composite resin catalyst for preparing alkylidene diatomic alcohol

An alkylene glycol, composite resin technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, hydrolysis preparations, etc., can solve the problem of poor heat resistance, short service life of catalysts, etc. problems, to achieve the effect of reducing energy consumption, reducing conversion rate and reducing material consumption

Active Publication Date: 2007-09-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that the catalyst used in the prior art has the problems of short service life and poor heat resistance under the condition of relatively high conversion rate and selectivity. Macroporous Composite Resin Catalysts of Dihydric Alcohols

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] Preparation method of composite resin

[0041] 【Example】

[0042] In a 500 ml three-necked bottle, add 200 ml of distilled water and 0.9 g of gelatin, start stirring and raise the temperature to completely dissolve the polyvinyl alcohol. Stop stirring, add monomer mixture solution (29.2 gram styrene, 5.8 gram divinylbenzene (40% by weight), 1.2 gram carbon nanotube, 35.6 gram 200 # Gasoline, 0.35 g of benzoyl peroxide), start stirring, heat up to 85°C, and react for 4 hours. The temperature was raised to 95°C for about 2 hours. After the reaction, pour out the upper liquid, wash with 85°C hot water for several times, and then wash with cold water for several times, then filter, dry, and weigh to obtain composite beads. Functionalization of composite beads: Add 20.6 grams of composite beads A and 80 milliliters of chloromethyl ether into a 500-ml three-necked bottle, start stirring and heat up to 30°C, add 8 grams of zinc chloride as a catalyst, and heat up to 39-40°C...

Embodiment 1～5

[0055] 15 milliliters of each of the above-mentioned catalysts A, B, C, D, and E (grain size 20-40 mesh) were packed in a stainless steel fixed-bed reactor with a diameter of 10 mm and a length of 350 mm respectively, and the raw material water and ethylene oxide Alkanes are fed with a metering pump at a molar ratio of 12:1. The pressure of the reaction system is 1.2 MPa, the reaction temperature is 90°C, and the liquid space velocity is 3 hours -1 , The product was qualitatively and quantitatively analyzed by HP5890 gas chromatography, and the results are listed in Table 1.

Embodiment 6

[0059] 15 milliliters of the catalyst C (particle size 20-40 mesh) is packed in a stainless steel fixed-bed reactor with a diameter of 10 mm and a length of 350 mm, and feed water and ethylene oxide with a metering pump at a molar ratio of 22:1. . The pressure of the reaction system is 1.2 MPa, the reaction temperature is 90°C, and the liquid space velocity is 6 hours -1 , The product was qualitatively and quantitatively analyzed by HP5890 gas chromatography, and the results are listed in Table 1.

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PUM

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Abstract

The invention relates to a macro-porous composite resin catalyst for preparing the alkylidene diatomic alcohol, which can solve the problems of short service life and worse heat resistance in the condition of higher conversion rate and selectivity in former technique. The invention uses the monomer, comonomer, nanometer material, initiator, agent one and agent two to combine the composite resin, then uses the compound with OH-, CI-, HSO4-, HCO3, and HCOO- to produce the catalyst via ion exchange to solve aforementioned problem, and it can be used in the commercial manufacture of alkylidene diatomic alcohol.

Description

technical field [0001] The invention relates to a macroporous composite resin catalyst used for preparing alkylene glycols. Background technique [0002] Ethylene glycol and propylene glycol are important aliphatic diols, among which ethylene glycol is the most widely used, mainly for the production of polyester resins, including fibers, films and engineering plastics. It can also be directly used as coolant and antifreeze, and it is also an indispensable substance in the production of alkyd resins, plasticizers, paints, adhesives, surfactants, explosives and capacitor electrolytes. [0003] Among the ethylene glycol compounds, diethylene glycol, triethylene glycol or higher polyethylene glycol have a narrower range of application than ethylene glycol. Therefore, in order to improve the selectivity of converting ethylene oxide into ethylene glycol, an excessive amount of water, that is, 20 to 25 times the molar amount of ethylene oxide, is ofte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06C07C29/10
Inventor 周斌李应成宗弘元费泰康王嘉华
Owner CHINA PETROLEUM & CHEM CORP