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Metal complex catalyst and synthesis process of diphenyl carbonate

A technology of metal complexes and catalysts, which is applied in the field of metal complex catalysts and the synthesis process of diphenyl carbonate, can solve the problems of high cost, poor selectivity of diphenyl carbonate catalysts, easy corrosion of chlorine, and achieve low cost , high catalyst activity and high selectivity

Active Publication Date: 2021-08-13
SHAANXI YANCHANG PETROLEUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of poor selectivity, high cost and easy corrosion of chlorine-containing catalysts of the two-step synthesis of diphenyl carbonate in the prior art, and provide a metal complex catalyst and diphenyl carbonate synthesis process

Method used

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  • Metal complex catalyst and synthesis process of diphenyl carbonate
  • Metal complex catalyst and synthesis process of diphenyl carbonate
  • Metal complex catalyst and synthesis process of diphenyl carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] S1: Measure the saturated water volume of the carrier

[0078] Weigh 98.7 parts of zirconium phosphate, add water drop by drop until saturated, and record the volume V1 of the water added dropwise.

[0079] S2: Preparation of metal complex catalysts

[0080] Weigh 1 part of Cu(NN-DBDMID) 2 I 2 , 0.2 part of Co(PNNP)I 2 and 0.1 part Ir(NN-DBNMID) 2 I 3 Dissolve it in water, adjust the pH to 7.5 with ammonia water, and make the total volume V1 to obtain an impregnation solution. Immerse 98.7 parts of zirconium phosphate in the above impregnating solution until all the impregnating solution is absorbed, then dry at 110-120°C for 4 hours, grind through a 200-mesh sieve, and extrude into strips to obtain the metal complex catalyst, denoted as YDYC- 01.

[0081] YDYC-01 includes 1 part of Cu(NN-DBDMID) 2 I 2 , 0.2 part Co(PNNP)I 2 , 0.1 part of Ir(NN-DBNMID) 2 I 3 and 98.7 parts of zirconium phosphate.

Embodiment 2

[0083] S1: Measure the saturated water volume of the carrier

[0084] Weigh 97.3 parts of zirconium phosphate, add water drop by drop until saturated, record the volume V2 of water added dropwise.

[0085] S2: Preparation of metal complex catalysts

[0086] Weigh 2 parts of Cu(NN-DBDMID) 2 I 2 , 0.5 part of Co(PNNP)I 2 and 0.2 parts Ir(NN-DBNMID) 2 I 3 Dissolve it in water, adjust the pH to 7.5 with ammonia water, and make the total volume V2 to obtain an impregnation solution. Immerse 97.3 parts of zirconium phosphate in the above impregnating solution until all the impregnating solution is absorbed, then dry at 110-120°C for 4 hours, grind through a 200-mesh sieve, and extrude into strips to obtain the metal complex catalyst, denoted as YDYC- 02.

[0087] YDYC-02 includes 2 parts of Cu(NN-DBDMID) 2 I 2 , 0.5 part Co(PNNP)I 2 , 0.2 parts Ir(NN-DBNMID) 2 I 3 and 97.3 parts of zirconium phosphate.

Embodiment 3

[0089] S1: Measure the saturated water volume of the carrier

[0090] Weigh 95.9 parts of β molecular sieve, add water drop by drop until saturated, and record the volume V3 of the water added dropwise.

[0091] S2: Preparation of metal complex catalysts

[0092] Weigh 3 parts of Cu(NN-DBDMID) 2 I 2 , 1 Co(PNNP)I 2 and 0.1 part Ir(NN-DBNMID) 2 I 3 Dissolve it in water, adjust the pH to 7.5 with ammonia water, and make the total volume V3 to obtain an impregnation solution. Immerse 97.3 parts of β molecular sieve in the above impregnation solution until all the impregnation solution is absorbed, then dry at 110-120°C for 4 hours, grind through a 200-mesh sieve, and extrude into strips to obtain the metal complex catalyst, denoted as YDYC- 03.

[0093] YDYC-03 includes 3 parts of Cu(NN-DBDMID) 2 I 2 , 1 part Co(PNNP)I 2 , 0.1 part of Ir(NN-DBNMID) 2 I 3 and 95.9 parts beta molecular sieves.

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Abstract

The invention discloses a metal complex catalyst and a synthesis process of diphenyl carbonate. The metal complex catalyst comprises a main active component and a carrier, wherein the main active component is loaded on the carrier; the main active component comprises a copper complex and / or a cobalt complex; the copper complex is CuL < 2 > X < 2 >, and the cobalt complex is Co < L > 'X < 2 >; wherein L is N, N-dimethyl benzimidazole (NN-DBDMID), L' is diimine diphosphine (PNNP), and X in the copper complex and X in the cobalt complex are respectively and independently negative ions. The metal complex catalyst disclosed by the invention has the advantages of high catalytic activity, high diphenyl carbonate selectivity, low cost, difficulty in corrosion of a reactor and the like; a process for catalytically synthesizing diphenyl carbonate by using the metal complex catalyst has the advantages of high product yield, simple process, cheap and easily available raw materials, no pollution, safety and capability of greatly reducing the explosion risk.

Description

technical field [0001] The invention relates to a metal complex catalyst and a synthesis process of diphenyl carbonate. Background technique [0002] Diphenyl carbonate is an important chemical product, which can be used as a synthetic raw material for many important medicines, pesticides and polymer materials. For example, diphenyl carbonate can be used in the synthesis of engineering plastics polycarbonate and polyparaben; it is mainly used in the synthesis of methyl isocyanate in pesticides, and then to prepare carbamate insecticide carbofuran ; In addition, it can also be used in the plastics industry, such as the manufacture of polyaryl carbonate, p-hydroxybenzoic acid polyester, monoisocyanate and diisocyanate. In addition, diphenyl carbonate can also be used as a plasticizer and solvent for nitrocellulose, polyamide, polyester, etc. [0003] The preparation techniques of diphenyl carbonate mainly include phosgene method, transesterification method and phenol oxidati...

Claims

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Application Information

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IPC IPC(8): B01J31/24C07C68/00C07C69/96
CPCB01J31/2409C07C68/00B01J2531/845B01J2531/827B01J2531/16B01J2231/49C07C69/96Y02P20/52
Inventor 杨东元孙育滨
Owner SHAANXI YANCHANG PETROLEUM GRP
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