Catalytic carbonylation process for synthesizing amide

A technology for synthesizing amides and catalysts, which is applied in the field of catalyzing the carbonylation of organic amines to produce corresponding amides. It can solve the problems of long exchange time, high gold loading, and complicated preparation process, and achieve simple composition, high catalytic efficiency, and simple reaction system. Effect

Inactive Publication Date: 2002-04-10
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

However, the catalysts prepared by the co-precipitation method often have the disadvantages of low specific surface area, high loading capacity of gold and easy embedding; while the gold catalysts prepared by the impregnation method are generally not acti

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0029] Weigh 3 grams of Au(PPh 3 ) 2 Cl was dissolved in 100 ml of ethanol, and was added into 100 ml of tetraethylorthosilicate preheated to 60° C. under stirring. After it was mixed evenly, 35 ml of 1 mol / L hydrochloric acid was added, reacted and aged for 12 hours, and then vacuum-dried at 60° C. for 3 hours to obtain catalyst a.

[0030] Catalyst b was prepared by replacing 1 mole / liter hydrochloric acid with 0.5 mole / liter phosphoric acid, and the rest of the steps were the same as catalyst a.

[0031] 100 ml of tetraethyl orthosilicate was replaced by a mixture of 80 ml of tetraethyl orthosilicate and 20 ml of tetrabutyl titanate, and the remaining steps were the same as catalyst a to obtain catalyst c.

[0032] The specific gold content in each catalyst is shown in Table 1.

[0033] example

catalyst

Au(wt%)1

1

a

0.19

2

b

0.21

3

c

0.20

[0034] Add 2 grams of cata...

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Abstract

A catalytic carbonylation process for preparing amide from organic amine features that the organic amine is catalytically and effectively carbonylated at 100-200 deg.C and 2-6 MPa for 0.5-5 hrs underthe existance of carried gold catalyst and the mixture of CO2 and O2 to obtain amide. Its advantages include high output rate up to 75-93%, easily separating catalyst, no loss of gold, and cyclic useof catalyst.

Description

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Claims

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Application Information

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Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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