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Catalyst for preparing low-carbon mixed alcohol by synthetic gas, its preparation method and application

A low-carbon mixed alcohol and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve problems such as poor stability of anti-sulfur catalysts, and achieve the effect of improving stability and life.

Active Publication Date: 2005-09-07
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention mainly aims at the shortcoming of the poor stability of the anti-sulfur catalyst, and provides a catalyst which not only has high activity and high selectivity, but also has good stability and its preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 .24H 2 O) 13.6g and a concentration of 22% ammonium sulfide ((NH 4 ) 2 S) 120ml of the solution was reacted for one hour at 60°C with stirring, and 50ml of concentrated acetic acid (CH 3 COOH) and deionized water to completely dissolve part of the precipitate and prepare a 1.0M ammonium thiomolybdate solution. Weigh nickel acetate (Ni(CH 3 COO) 2 .4H 2 O) 4.7g, manganese acetate (Mn(CH 3 COO) 2 .4H 2 O) 1.7g were dissolved in 150ml deionized water, and the solution was dissolved with ammonium thiomolybdate. Solution and 300ml concentration of 30% acetic acid solution were reacted at 60°C under stirring to form a black precipitate. Wash, filter, and dry under vacuum at 120°C to obtain a molybdenum-based precipitate. Weigh 1.7g of ferrous sulfide and the same quality of citric acid and mix them thoroughly, rise to 450°C under nitrogen protection, roast at constant temperature for 2 hours, cool to room temperature, full...

Embodiment 2

[0036] Ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 .24H 2 O) 13.6g and a concentration of 22% ammonium sulfide ((NH 4 ) 2 S) 120ml of the solution was reacted for one hour at 60°C with stirring, and 50ml of concentrated acetic acid (CH 3 COOH) and deionized water to completely dissolve part of the precipitate and prepare a 0.5M ammonium thiomolybdate solution. Weigh nickel acetate (Ni(CH 3 COO) 2 .4H 2 O) 6.4g, manganese acetate (Mn(CH 3 COO) 2 .4H 2 O) 3.4g were dissolved in 150ml deionized water together, and this solution reacted with ammonium thiomolybdate solution and 300ml concentration of 30% acetic acid solution at 60°C under stirring to generate black precipitate. Wash, filter, and dry under vacuum at 120°C to obtain a molybdenum-based precipitate. Weigh 1.15g of ferrous sulfide and the same quality of citric acid and mix them thoroughly, rise to 450°C under nitrogen protection, roast at constant temperature for 2 hours, cool to room temperature, fully mix wi...

Embodiment 3

[0038] Ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 .24H 2 O) 13.6g and a concentration of 22% ammonium sulfide ((NH 4 ) 2 S) 120ml of the solution was reacted for one hour at 60°C with stirring, and 50ml of concentrated acetic acid (CH 3 COOH) and deionized water to completely dissolve part of the precipitate and prepare a 0.8M ammonium thiomolybdate solution. Weigh nickel acetate (Ni(CH 3 COO) 2 .4H 2 O) 3.2g, manganese acetate (Mn(CH 3 COO) 2 .4H 2 O) 1.7g was dissolved in 150ml deionized water together, and this solution reacted with ammonium thiomolybdate solution and 300ml concentration of 30% acetic acid solution at 60°C under stirring to generate black precipitate. Wash, filter, and dry under vacuum at 120°C to obtain a molybdenum-based precipitate. Weigh 2.3g of ferrous sulfide and the same quality of citric acid and mix them thoroughly, rise to 450°C under nitrogen protection, roast at constant temperature for 2 hours, cool to room temperature, fully mix with...

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Abstract

The invention is composition gasifying low-carbon mixing alcohol catalyst and its preparation method and utilization. The weight percentages of the catalyst are: Mo: 20-40%, Ni: 4-10%, Mn: 0.1-1.0%, K: 5-15%, Fe: 5-10%, S: 20-40%, the cohesive agent: 10-20%. The preparation method is to add ammonium molybdate to ammonium sulfide solution to react to get thiosulfate ammonium molybdate solution; drop in nickel and manganese salt solution and the thiosulfate ammonium molybdate solution, and through heating, filtering, cleaning, depositing and drying to get molybdenum nickel manganese multi-sulfur compound; mix molysite with citric acid and carry out heating reaction to get molysite C; mix molybdenum nickel manganese multi-sulfur compound, kali salt and molysite C, abrade them, lead in indifferent protective gas to burn to get molybdenum nickel manganese kalium sulfur compound; add cohesive agent to mix, press and form. The catalyst of the invention has high activity, high selectivity and good stability.

Description

technical field [0001] The invention belongs to a catalyst and its preparation method and application, in particular to a catalyst for producing low-carbon mixed alcohols from synthesis gas, its preparation method and application. Background technique [0002] With the depletion of oil resources, the future energy structure will shift to coal and natural gas. Coal is the main energy resource in our country. With the deteriorating environment, the clean utilization of coal is an urgent task. From the perspective of effective utilization of resources, the research on indirect conversion of coal into liquid fuels and chemicals has broad application prospects. [0003] The application prospect of low-carbon alcohol has become increasingly clear. As a fuel additive, it has good solubility, volatility, driving operability and high octane number. In addition, it can also be used as a raw material and clean fuel for some chemical products. [0004] There have been a large number...

Claims

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Application Information

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IPC IPC(8): B01J27/051C07C29/156
Inventor 孙予罕钟炳李文怀马玉刚张侃
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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