Catalyst for synthesizing low carbon mixed alcohol by synthetic gas and its preparation method

A low-carbon mixed alcohol and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve problems such as inevitable independent transition metal sulfides, etc. Achieve wide applicability, good performance repeatability, improved stability and longevity

Inactive Publication Date: 2005-06-29
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

A variety of transition metals have high hydrogenation activity and the ability to promote carbon chain growth, through the transition metals on MoS 2 The modification of catalysts based on lower carbon alcohols can improve their activity and C 2 + Alcohol selectivity, however, transition metals such as Fe, Co, Ni have a strong ability to form hydrocarbons, and traditional preparation methods such as co-precipitation technology inevitably form independent transition metal sulfides, which will lead to modified MoS 2 A large number of hydrocarbon by-products are formed by low-carbon alcohol-based catalysts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: preparation ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 ) and a concentration of 17% ammonium sulfide ((NH 4 ) 2 S) The mixed solution was vulcanized at 50°C for 2 hours, and concentrated acetic acid (CH 3 COOH) to neutralize excess S 2- (to pH=7). After 8 hours, it was naturally cooled and aged at low temperature (0° C.) until reddish-brown ammonium thiomolybdate crystals were formed. The prepared ammonium thiomolybdate crystals and nickel acetate (Ni(CH 3 COO) 2) in ethanol in a Erlenmeyer flask and mixed tightly. The mixture in the Erlenmeyer flask was placed in an ultrasonic apparatus and treated at 60°C for 30 minutes, then naturally cooled and aged at -5°C for 24 hours. After aging, the precipitate was washed, filtered and dried at 120° C. to obtain the precipitate. Then add potassium carbonate, put it in a tube furnace under a nitrogen atmosphere and roast it at 500°C for 2 hours, and get metal sulfide powder after cooling, then add bentonite...

Embodiment 2

[0033] Embodiment 2: preparation ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 ) and a concentration of 17% ammonium sulfide ((NH 4 ) 2 S) The mixed solution was vulcanized at 50°C for 2 hours, and concentrated acetic acid (CH 3 COOH) to neutralize excess S 2- (to pH=7). After 8 hours, it was naturally cooled and aged at low temperature (0° C.) until reddish-brown ammonium thiomolybdate crystals were formed. The prepared ammonium thiomolybdate crystals and nickel acetate (Ni(CH 3 COO) 2 ) in ethanol in a Erlenmeyer flask and mixed tightly. The mixture in the Erlenmeyer flask was placed in an ultrasonic apparatus and treated at 60°C for 30 minutes, then naturally cooled and aged at -5°C for 24 hours. After aging, the precipitate was washed, filtered and dried at 120° C. to obtain the precipitate. Then add potassium carbonate, put it in a tube furnace under a nitrogen atmosphere and roast at 500°C for 2 hours, and after cooling, metal sulfide powder is obtained, and then be...

Embodiment 3

[0034] Embodiment 3: preparation ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 ) and a concentration of 17% ammonium sulfide ((NH 4 ) 2 S) The mixed solution was vulcanized at 50°C for 2 hours, and concentrated acetic acid (CH 3 COOH) to neutralize excess S 2- (to pH=7). After 8 hours, it was naturally cooled and aged at low temperature (0° C.) until reddish-brown ammonium thiomolybdate crystals were formed. The prepared ammonium thiomolybdate crystals and nickel acetate (Ni(CH 3 COO) 2 ) in ethanol in a Erlenmeyer flask and mixed tightly. The mixture in the Erlenmeyer flask was placed in an ultrasonic apparatus and treated at 60°C for 30 minutes, then naturally cooled and aged at -5°C for 24 hours. After aging, the precipitate was washed, filtered and dried at 120° C. to obtain the precipitate. Then add potassium carbonate, put it in a tube furnace under a nitrogen atmosphere and roast it at 500°C for 2 hours. After cooling, metal sulfide powder is obtained, and then ben...

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PUM

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Abstract

This is about a kind of catalyst to make complexes ether of low carbon, whose weight rate is: Mo: 20--40%, soil: 15--30%, Ma: 5--20%, K: 5--15%, S: 20--40%. Take the changing S reactivity to the S hua ammonia solution and Mo acid ammonia, add heavy Acetic acid, filter, dry, and make S dai Mo acid ammonia ether solution: make Ma salt ether solution, mixing them and take supersonic reaction, then get the precipitation, wash, dry and mix with K salt, crash, fire after taking protection air, add soil, mix, press to sheet, shape. The way of the invention is simple, easy to operate, high activity, high choosing ability of ether and low choosing ability of Hydrocarbon.

Description

technical field [0001] The invention belongs to a catalyst and a preparation method thereof, in particular to a catalyst for preparing low-carbon mixed alcohols from synthesis gas and a preparation method thereof. Background technique [0002] Whether in the world or in China, energy strategy is a very important issue. With the depletion of oil resources, the energy structure will shift to coal and natural gas. Coal is the main energy resource in our country. From the perspective of effective utilization of resources and environmental protection, the research on indirect conversion of coal into liquid fuels and chemicals has broad application prospects. [0003] In recent years C 1 -C 6 The application value of low-carbon mixed alcohols in the fields of fuel and chemical industry has gradually emerged, and its application prospects have become increasingly clear. As a fuel additive, it has good solubility, volatility, driving operability and high octane number. In addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/88C07C29/156
Inventor 孙予罕钟炳李德宝李文怀杨成
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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