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Alcoholysis catalyst comprising metal oxides loaded by mesoporous molecular sieve and preparation method thereof

A mesoporous molecular sieve and metal-supported technology, which is applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of polluted air, low product purity, high purity and high yield, and prevent Disappearance of active centers, prevention of changes, and effects of reducing the occurrence of by-products

Inactive Publication Date: 2013-09-04
安徽生力农化有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But by comparison, the highest yield in these methods is 75.9%, a large amount of by-product monochloroethane is produced, polluted the air, and the product purity is low, and the purity of the product after vacuum distillation is only 96.8%, which cannot meet the requirements of high purity, The need for high productivity
At present, it is reported in the literature that it is a homogeneous catalyst-free reaction, and there is no report on the preparation of triethyl phosphate by heterogeneous catalysis.

Method used

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  • Alcoholysis catalyst comprising metal oxides loaded by mesoporous molecular sieve and preparation method thereof
  • Alcoholysis catalyst comprising metal oxides loaded by mesoporous molecular sieve and preparation method thereof

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Embodiment 1

[0016] 1. In a 35°C water bath, take a 500ml three-necked flask and add 10ml deionized water to it, dissolve 0.0125ml surfactant EO 20 PO 70 EO 20 , Add 0.075ml ethyl orthosilicate and 0.45ml hydrochloric acid with vigorous stirring, continue to stir vigorously for more than 24 hours, put it into an ethylene bottle to crystallize for 48hr, filter, wash and dry, extract with acetone reflux for 5hr, and calcinate at 550℃6 Remove the template agent ethyl orthosilicate within hours to obtain white powder SBA-15; take 0.5mol / L aluminum acetate, 0.3mol / L magnesium acetate, 0.17mol / L titanium acetate and 0.03mol / L rare earth metal acetate The corresponding mole fraction is dissolved, and the prepared SBA-15 mesoporous molecular sieve is added for surface adsorption, calcined at 500-1000°C for 2 hours, and cooled in nitrogen or inert gas to obtain the SBA-15 mesoporous molecular sieve for supporting metal oxides. A catalyst for the preparation of triethyl phosphate by the alcoholysis...

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Abstract

The invention discloses an alcoholysis catalyst comprising metal oxides loaded by a mesoporous molecular sieve and a preparation method thereof. The preparation method comprises the step that an aluminum acetate-magnesium acetate-titanium acetate-rare earth metal acetate mixed solution is physically adsorbed on a SBA-15 mesoporous molecular sieve; and the SBA-15 mesoporous molecular sieve is calcined so that metal oxides are loaded on the SBA-15 mesoporous molecular sieve. Through utilization of the alcoholysis catalyst, a triethyl phosphate yield and triethyl phosphate purity are greatly improved. The alcoholysis catalyst can be separated easily and can be recycled.

Description

technical field [0001] The invention relates to the field of organic reaction catalysts, in particular to an alcoholysis catalyst loaded with metal oxides on mesoporous molecular sieves and a preparation method thereof. Background technique [0002] Triethyl phosphate is an important class of high boiling point solvents, plasticizers for rubber and plastics, chemical reaction catalysts and pesticide raw materials, such as triethyl phosphate is a solvent for cellulose nitrate and cellulose acetate, and keeps organic peroxidation solvents for catalyst activity, polyester resins, peroxide diluents for curing catalysts for epoxy resins, vinyl fluoride dispersants, chlorine-based insecticides and stabilizers, stabilizers for phenolic resins, and xylenol formaldehyde resins Curing agent, and plasticizer of phenolic resin, vinyl chloride, vinyl acetate polymer, flame retardant of polyester resin. The most economical synthesis method of triethyl phosphate is to prepare triethyl p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03C07F9/11
Inventor 丁省胡林王魁江汪炳所吴金辉曹敏
Owner 安徽生力农化有限公司
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