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Catalyst for preparing sec-butylamine through catalyzing, aminating and hydrogenizing butanone, and preparaation method

A hydrogen preparation and catalyst technology, applied in the field of catalyst and its preparation

Inactive Publication Date: 2007-10-17
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is a tank reaction, not suitable for large-scale industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Select 20g of Al with a diameter of 2-3mm 2 o 3 -TiO 2 Particles are carriers. After heating 50ml of nickel nitrate solution with a concentration of 20% to 75°C, pour it into the above Al 2 o 3 -TiO 2 In the carrier, dry at 100-120°C for 5 hours, bake at 450-600°C for 4 hours, pour 25ml solution containing 2.5g copper acetate and 2.4g chromium nitrate after cooling, dry at 100-120°C for 5 hours, and finally Reduction with hydrogen at 250-300°C for 3 hours to obtain the catalyst.

[0011] Put 20ml of the catalyst above into a Φ10 stainless steel reactor. At 180°C and normal pressure, the molar ratio of methyl ethyl ketone to ammonia and hydrogen is 1:1.2:1.2, the conversion rate of the reaction is 42%, and the selectivity is 97%.

Embodiment 2

[0013] The preparation method of catalyzer is the same as example 1, and what difference is that second impregnation adopts is that 25ml contain 2.5g copper acetate and contain the solution of 3.2g magnesium nitrate, dry under example 1 condition, and reduction, make required catalyzer.

[0014] Using 20ml of the catalyst, using the same conditions as Example 1, the reaction conversion rate was 34%, and the selectivity was 84%.

Embodiment 3

[0016] The preparation method of catalyzer is the same as example 1, and what difference is that second time impregnation adopts is that 25ml contains 2.5g copper acetate and contains the solution of 1.5g barium nitrate, is dried under example 1 conditions, and reduction, makes required catalyzer.

[0017] Using 20ml of the catalyst, using the same conditions as Example 1, the reaction conversion rate was 35%, and the selectivity was 86%.

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PUM

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Abstract

The invention relates to a catalyst for preparing secondary bulylamine by making methyl ethyl ketone undergo the process of catalytic ammoniation and hydrogenation and its preparation method. Said catalyst carrier is Al2O3-TiO2 composite oxide, its active component is formed from 10-25 wt% of NiO and 1-10 wt% of two kinds of CuO, Cr2O3, MgO and BaO. Said catalyst is prepared by adopting impregnation method. Said catalyst uses industrial methyl ethyl ketone, liquid ammonia and hydrogen gas as raw material, the mole ratio of methyl ethyl ketone, liquid ammonia and hydrogen gas is 1:1.2:1.2, under the condition of normal pressure and reaction temperature with 170-200deg.C the methyl ethyl ketone conversion rate can be up to 30-42% and the selectivity can be up to 70-97%.

Description

technical field [0001] The invention relates to a catalyst for preparing sec-butylamine by catalytic hydrogenation and hydrogenation of methyl ethyl ketone and a preparation method thereof. Background technique [0002] As an excellent antistaling agent, sec-butylamine was recommended by the United Nations Health Organization and the Food Organization as early as the early 1980s. With the increasing demand for sec-butylamine, different production and preparation routes for sec-butylamine have come out one after another, such as sec-butanol Ammonification and hydrogenation of methyl ethyl ketone and the corresponding haloalkane ammonolysis. Nitto Chemical Company of Japan, Air Products and Chemicals Company of the United States, etc. use the ammoniation hydrogenation process of sec-butanol to produce sec-butylamine. The catalysts used are alumina, silica, titanium dioxide, tungsten trioxide, clay, thorium oxide, Chromium oxide, mixtures of various metal oxides and phosphates...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/86B01J37/02B01J37/18
Inventor 赵培庆张锦华凌文凯赵志远高国进陈谊
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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