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Catalyst for preparing maleic anhydride by benzene oxidation and preparation method thereof

A catalyst and co-catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, organic chemistry, etc., can solve problems such as poor heat transfer

Pending Publication Date: 2021-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at the technical problem of poor heat transfer in the prior art. On the basis of formula optimization in the early stage, a material with good thermal conductivity is added to the mother liquor of the catalyst to better conduct and disperse the reaction heat and avoid deep oxidation. Improve heat transfer performance and enhance catalyst performance

Method used

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  • Catalyst for preparing maleic anhydride by benzene oxidation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] Step A: Dissolve 98g of oxalic acid in 350mL of water at room temperature, add 67.6g of ammonium metavanadate, and add while stirring until the ammonium metavanadate is completely dissolved to form a dark green solution; dissolve 28.8g of ammonium molybdate in 50mL In water, make it dissolve evenly, and add the solution to the above-mentioned ammonium metavanadate-oxalic acid solution; add 4.3g trisodium phosphate, 1.9g diammonium hydrogen phosphate, 1.5g nickel nitrate, 1.2g cerium nitrate successively under stirring and 1.8g indium nitrate, mixed to prepare the catalyst active component mixture, then add 1.2g of polyethylene glycol, the corresponding addition is 0.2% of the solution quality, continue to stir, and add rod-shaped graphite after the above solution is stirred for ten minutes Alkene, 1 μm in diameter and 2 μm in length, was added in an amount of 3.3 g, and stirring was continued for 30 minutes.

[0107] Step B: Put 330g of the carrier into a rotatable and ...

Embodiment 2

[0111] Step A: Dissolve 98g of oxalic acid in 350mL of water at room temperature, add 67.6g of ammonium metavanadate, and add while stirring until the ammonium metavanadate is completely dissolved to form a dark green solution; dissolve 28.8g of ammonium molybdate in 50mL In water, make it dissolve evenly, and add the solution into the above-mentioned ammonium metavanadate-oxalic acid solution; add 4.3g trisodium phosphate, 1.9g diammonium hydrogen phosphate, 1.5g nickel nitrate, 1.2g cesium nitrate successively under stirring and 2.4g erbium oxide, mix the back and make the catalyst active component mixture, then add the polyoxyethylene glycol of 4.8g, the corresponding addition is 0.8% of solution quality, treat that above-mentioned solution adds spherical nano-graphite after stirring for ten minutes, average The particle size is about 10nm, the added amount is 2.8g, and the stirring is continued for 30 minutes.

[0112] Step B: Put 330g of the carrier into a rotatable and h...

Embodiment 3

[0116]Step A: Dissolve 96g of oxalic acid in 340mL of water at room temperature, add 67.6g of ammonium metavanadate, and add while stirring until the ammonium metavanadate is completely dissolved to form a dark green solution; dissolve 28.8g of ammonium molybdate in 50mL In water, make it dissolve evenly, and add the solution to the above-mentioned ammonium metavanadate-oxalic acid solution; add 4.4g trisodium phosphate, 1.9g diammonium hydrogen phosphate, 1.5g nickel nitrate and 1.2g rubidium nitrate successively under stirring and 2.4g ferric nitrate, mixed to prepare the catalyst active component mixture, then add 3.5g polyethylene glycol, the corresponding addition is 0.6% of the solution quality, after the above solution is stirred for ten minutes, add rod-shaped carbon fibers with a diameter of At about 100nm, the length is 10μm, the added amount is 3.0g, and the stirring is continued for 30 minutes.

[0117] Step B: Put 330g of the carrier into a rotatable and heatable ...

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Abstract

The invention provides a catalyst for preparing maleic anhydride by benzene oxidation. The catalyst comprises a catalyst carrier, an active component and a heat conduction material. By using the catalyst provided by the invention, reaction heat conduction and dispersion can be better realized, deep oxidation is avoided, the heat transfer performance is improved, the performance of the catalyst isimproved, and the catalyst has relatively high benzene conversion rate and maleic anhydride quality yield.

Description

technical field [0001] The invention belongs to the technical field of catalysts for preparing maleic anhydride by benzene oxidation, and in particular relates to a catalyst for preparing maleic anhydride by benzene oxidation and a preparation method thereof. Background technique [0002] Maleic anhydride is a very important organic chemical raw material, and it has become the second largest organic anhydride after phthalic anhydride. Maleic anhydride is mainly used in the production of 1,4-butanediol, γ-butyrolactone, tetrahydrofuran, fumaric acid, unsaturated polyester resin, etc. It can also be used in the production of medicines and pesticides. The largest use of maleic anhydride is to produce unsaturated polyester resin (UPR), and the second largest use is to synthesize 1,4-butanediol. The consumption of the two can account for more than 60% of the consumption of maleic anhydride. [0003] The production of maleic anhydride mainly uses benzene and n-butane as the main ...

Claims

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Application Information

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IPC IPC(8): B01J27/199C07D307/60
CPCB01J27/199C07D307/60
Inventor 张东顺师慧敏张作峰冯晔安欣刘玉芬袁滨
Owner CHINA PETROLEUM & CHEM CORP
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