Preparation method of supported MoO3 catalyst for synthesizing phenyloxalate

A diphenyl oxalate, supported technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of harsh conditions, low activity, high energy consumption, etc. problems, to achieve the effect of mild preparation conditions, high activity and low energy consumption

Inactive Publication Date: 2017-11-07
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] For the above-mentioned deficiencies that exist in the prior art, the object of the present invention is to provide a kind of load type MoO that is used for synthesizing diphenyl oxalate 3 The preparation method of the catalyst solves the problems of high energy consumption, harsh conditions and low activity of the existing preparation methods

Method used

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  • Preparation method of supported MoO3 catalyst for synthesizing phenyloxalate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, a kind of loaded MoO that is used for synthesizing diphenyl oxalate 3 The preparation method of catalyst comprises the following steps:

[0016] 1. Loaded MoO 3 Catalyst preparation

[0017] (1) SiO 2 After the powder is washed with water and dried, it is placed in a desiccator for later use. Weigh 7.08g of tetrabutyl titanate and dissolve it in 100mL of absolute ethanol, stir at room temperature for 4h; then add 15g of SiO 2 and stirred for 3h, until SiO 2 After fully mixing with the impregnating solution, slowly drop a little excess deionized water; let stand for 36 hours, and then dry at 120°C for 6 hours to obtain a solid powder; then put the solid powder into a glow plasma device for 10 minutes to obtain 10%TiO 2 / SiO 2 Catalyst carrier.

[0018] (2) Dissolve 1.24g of ammonium molybdate in 40mL of deionized water, and then load the ammonium molybdate solution onto 20g of 10% TiO 2 / SiO 2 On the catalyst carrier; let it stand for 36 hours, an...

Embodiment 2

[0024] The catalytic activity of the catalyst prepared in 1-3 was tested by transesterification of phenol and DMO to synthesize DPO.

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Abstract

The invention discloses a preparation method of a supported MoO3 catalyst for synthesizing phenyloxalate. The preparation method adopts a plasma method, and the main process comprises the steps of: preparing catalyst carriers and preparing the supported MoO3 catalyst and the like. The supported MoO3 catalyst prepared by the preparation method has high catalytic activity and selectivity in ester exchange of phenol and dimethyl oxalate and synthesis into methyl phenyl oxalate and phenyloxalate. The preparation method disclosed by the invention has the advantages of mild operation condition, no pollution to the environment, no corrosion to equipment, low energy consumption, easy implementation for separation from a reaction system and recycling and the like.

Description

technical field [0001] The present invention relates to a kind of preparation method for the catalyst of raw material methyl phenyl oxalate (MPO) and diphenyl oxalate (DPO) for synthesizing DPC, be specifically related to a kind of loaded MoO for synthesizing diphenyl oxalate 3 Catalyst preparation method. It belongs to the technical field of organic chemistry. Background technique [0002] DPC is an important green chemical intermediate, which can be used to synthesize many important organic compounds and polymer materials, especially polycarbonate, which can replace phosgene and bisphenol A to synthesize one of the five major engineering plastics, so it has a high Economic Value. At present, the synthesis methods of DPC mainly include phosgene method, phenol carbonylation method, urea method, transesterification method and so on. The transesterification methods include transesterification between alkyl carbonate and phenol, transesterification between alkyl carbonate an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/28B01J37/02B01J37/34C07C67/03C07C69/36
CPCB01J23/002B01J23/28B01J37/0201B01J37/0207B01J37/349B01J2523/00C07C67/03C07C69/36B01J2523/41B01J2523/47B01J2523/68
Inventor 余晓鹏
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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