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Catalyst for preparing mixing alcohol with low carbon from synthesis gas and its preparing method

A low-carbon mixed alcohol and catalyst technology, applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve the problems of harsh requirements, cobalt loss, affecting catalyst activity and selectivity, etc., to ensure stability And life, the effect of preventing loss

Inactive Publication Date: 2003-07-23
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

However, there are two main problems with this catalyst. One is the strict requirements on the hydrogen-to-carbon ratio of the feed gas. 2 / CO must be between 1.0-1.1; the second is that cobalt carbonyl is easily formed between the catalyst additive cobalt and carbon monoxide, resulting in the loss of cobalt, affecting the activity and selectivity of the catalyst, resulting in limited catalyst stability and life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Ammonium molybdate ((NH 4 ) 6 Mo 7 O 24 .24H 2 O) 12g and concentration not less than 17% ammonium sulfide ((NH 4 ) 2 S) 18.5 g of the solution was reacted at 40° C. under stirring for half an hour, and then 50 ml of concentrated acetic acid (CH 3 COOH) for another half an hour to finally generate an ammonium thiomolybdate solution, and then add deionized water to completely dissolve part of the precipitate. Weigh nickel acetate (Ni(CH) 3 COO) 2 .4H 2 O) 6.3g, manganese acetate (Mn(CH) 3 COO) 2 .4H 2 O) 6.8 g and 120 ml of deionized water were used to prepare an aqueous solution, and the solution was added dropwise with ammonium thiomolybdate at 40° C. and reacted with stirring to form a precipitate. After washing with methanol, it was filtered. The precipitate was dried at 120°C to obtain a precipitate. Then, 2.8 g of potassium carbonate was added. After uniform mixing, the mixture was placed in a tube furnace for calcination at 550° C. for 1 hour under ...

Embodiment 2

[0029] Weigh ammonium molybdate ((NH 4 ) 6 Mo 7 O 24 .24H 2 O) 16.0g was added in the there-necked flask with 250ml of deionized water, passed into hydrogen sulfide (H 2 S) gas 15L, react at 60 ℃ and stirring for half an hour, then add 75ml concentrated acetic acid (CH 3 COOH) for another half an hour to finally generate an ammonium thiomolybdate solution, and then add deionized water to completely dissolve part of the precipitate. Weighing configuration nickel acetate (Ni(CH) 3 COO) 2 .4H 2 O) 7.0g, manganese acetate (Mn(CH) 3 COO) 2 .4H 2O) 7.5 g and 150 ml of deionized water were used to prepare an aqueous solution, and the solution was added dropwise with ammonium thiomolybdate solution at 40° C. and reacted under stirring to form a precipitate. After washing with citric acid, it was filtered. The precipitate was dried at 110°C to obtain a precipitate. Then, 3.0 g of potassium hydroxide was added, uniformly mixed, and then placed in a tube furnace for calcinat...

Embodiment 3

[0031] Ammonium molybdate ((NH 4 ) 6 Mo 7 O 24 .24H 2 O) 6.9g and concentration not less than 17% ammonium sulfide ((NH 4 ) 2 S) 10.7 g of the solution was reacted at 60° C. under stirring for half an hour, and 50 ml of concentrated acetic acid (CH 3 COOH) for another half an hour to finally generate an ammonium thiomolybdate solution, and then add deionized water to completely dissolve part of the precipitate. Weighing configuration nickel acetate (Ni(CH) 3 COO) 2 .4H 2 O) 5.0g, manganese acetate (Mn(CH) 3 COO) 2 .4H 2 O) 9.3 g and 150 ml of deionized water are used to prepare an aqueous solution, which is added dropwise with ammonium thiomolybdate solution at 50° C. and reacted under stirring to form a precipitate. After washing with ethanol, it was filtered. The precipitate was dried at 100°C to obtain a precipitate. Then add 2.5g of potassium carbonate solution, carry out equal volume immersion for 6 hours, dry at 80°C, and then place in a tube furnace for ca...

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PUM

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Abstract

A catalyst for preparing low-carbon alcohol mixture from synthetic gas contains Mo (2-40 %), Ni (4-10%), Mn (0.1-5.0%), K (5-15%), S (20-40%) and bentone, and is prepared through reaction of ammoniumsulfide solution or hydrogen sulfide gas on ammonium molybdate, adding concentrated acetic acid, thermal stirring, cooling for deposition, adding deionized water for dissolving doposit to obtain solution of ammonium thiomolybdate, dropping the solution along with the mixed solution of nickel acetate and manganese acetate in acetic acid to form black deposit, filtering, washing, baking, mixing with bentone, and tabletting. Its advantages are high resistance to S and no carbon deposit.

Description

Technical field: [0001] The present invention provides a synthetic gas (CO and H 2 ) catalyst for preparing mixed low-carbon alcohol and preparation method thereof, mainly relates to a molybdenum-based sulfide catalyst. Background technique: [0002] Whether in the world or in China, energy strategy is a very important issue. With the depletion of oil resources, the future energy structure will be dominated by coal and natural gas. Coal is the main energy resource in my country, but with the deterioration of the environment, the clean utilization of coal has become an urgent task. From the perspective of efficient 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 alcohols has become increasingly clear. As a fuel additive, it has good solubility, volatility, driving maneuverability and high octane number. In addition, it can also be used as...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J27/02C07C29/153
Inventor 孙予罕李文怀马玉刚张侃钟炳
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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