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Prepn process and application of catalyst for preparing lower C2-C4 alcohol

A C2-C4, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of small adjustment range and poor adjustment of tertiary amines, etc. Achieve the effect of improving production efficiency, good selectivity, and reducing reaction temperature

Inactive Publication Date: 2003-08-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the generated primary, secondary and tertiary amines can be adjusted within a certain range, the adjustment range is small, especially for tertiary amines.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Preparation of Vector

[0030] Titrate the sodium silicate solution with 80--90ml of 18% hydrochloric acid solution. The sodium silicate solution is diluted with 200ml of 26% sodium silicate solution and 300ml of water. The titration temperature is normal temperature, the speed is 20ml / min, the titration end point is PH3--7, after titration, stand for 3 hours, filter, wash, dry, and get SiO after drying 2 , the SiO 2 Soak in 10% ammonium chloride solution for 4 hours, filter, wash, and dry at 120°C for 6 hours to obtain SiO 2 powder. SiO 2 Grind and sieve to get 40---300 mesh SiO 2 The carrier is spare.

[0031] 2. Catalyst preparation

[0032] Add 120g of cobalt nitrate and 30g of calcium nitrate to the beaker, add 160ml of water to dissolve, and take the SiO prepared by the above method 2 Carrier 40g and aluminum oxide monohydrate 9g, add carrier while stirring, adopt 20% anhydrous sodium carbonate solution to titrate (60g+190ml water), titration temperature...

Embodiment 2

[0039] The evaluation was carried out on a pressurized device.

[0040] 1. Catalyst Preparation

[0041] With embodiment 1.

[0042] 2. Catalyst evaluation

[0043] With embodiment 1.

[0044] temperature

Embodiment 3

[0046]1. Catalyst Preparation

[0047] With embodiment 1.

[0048] 2. Catalyst evaluation

[0049] Same as Example 1

[0050] Proportion

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PUM

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Abstract

The catalyst consists of carrier SiO2, alumina, diatomite, etc; and the carried active components Co, Ca, Fe, etc. which accounts for 10-50 wt% of the catalyst and has the atom ratio of Co, Ca and Fe equal to 1 to 0.05-0.8 to 0-0.1. The catalyst may be prepared through one of precipitation process, soaking process and soaking-precipitation process. The catalyst is suitable for various amination reactions, especially the preparation process of lower aliphatic amine. When the catalyst is used, amine may be prepared at relatively low pressure and temperature, and the ratio between primary amine, secondary and tertiary amine may be regulated in relatively wide range.

Description

technical field [0001] The invention relates to a catalyst for preparing lower aliphatic amines, in particular to a catalyst for preparing amines from lower aliphatic alcohols and corresponding aldehydes and ketones by ammoniation in a state of hydrogenation, as well as its preparation method and application. Background technique [0002] In the chemical industry, amine compounds include primary amines, secondary amines, and tertiary amines, and are widely used in pesticides, medicines and other fields. They are usually prepared by hydroamination of alcohols and corresponding aldehydes and ketones in the presence of hydrogen and catalysts. The mechanism of hydroamination reaction can be divided into three steps: the first step is the dehydrogenation of raw material alcohols to form aldehydes or Ketones; in the second step, the addition of aldehydes or ketones to ammonia produces imines; in the third step, further hydrogenation of imines produces amines. [0003] U.S. Patent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J23/75B01J23/78C07C211/03
Inventor 王金利张桂英李宝芹田岐石锦文田玉荣
Owner CHINA PETROLEUM & CHEM CORP
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