A method for catalytic conversion of synthesis gas

A catalytic conversion and synthesis gas technology, applied in chemical instruments and methods, carbon monoxide reaction preparation, physical/chemical process catalysts, etc., can solve the problem of the preparation of cyclohexanone and the simultaneous generation of cyclohexanone and hydrocarbons that have not been seen and other problems, to achieve the effect of stable structure, stable performance and simple process

Active Publication Date: 2017-06-30
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] To sum up, the raw materials used in the preparation of cyclohexanone in the literature are mainly organic substances with a carbon number ≥ 6 (such as cyclohexane, cyclohexene, phenol, benzene, etc.), and carbon monoxide with a carbon number of 1 has not been seen. A report on preparation of cyclohexanone from inorganic substances
Moreover, in the literature of syngas conversion, there is no report that can simultaneously generate cyclohexanone and hydrocarbons

Method used

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  • A method for catalytic conversion of synthesis gas

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Effect test

Embodiment 1

[0026] Weigh 26.1880 grams of Co(NO 3 ) 2 ·6H 2 O, 38.1517 g Zn(NO 3 ) 2 ·6H 2 O and 144.3260 g Al(NO 3 ) 3 9H 2 O, dissolved in 500 milliliters of deionized water, was prepared into solution A containing Co, Zn, and Al elements at the same time. Weigh 152.1399 grams of NaHCO 3 , dissolved in 1800 ml of deionized water to prepare solution B. Under vigorous stirring at 40°C, drip solution A and solution B into a beaker to implement co-precipitation reaction, continue stirring and aging at 40°C for 1 hour after the solution is dripped, filter with suction, wash with deionized water, and repeat washing and filtration Until the filtrate does not contain sodium ions, dry the filter cake in an oven at 80°C for 4 hours to semi-dry, add a small amount of scallop powder (extrusion aid), knead, extrude into strips and dry them in the oven at 110°C Bake for 2 hours until dry, then calcinate in a muffle furnace at 350°C for 4 hours, take it out, break it, and pass through a 40-6...

Embodiment 2

[0028] Adopt the method for preparing catalyst by coprecipitation described in embodiment 1, make unreduced ZnAl by adjusting the proportioning consumption of reagent 2 o 4 •xAl 2 o 3 (x=0.1) Carrier loaded cobalt solid phase material, named C2. Expressed in the format "Substance / Carrier", the chemical composition of sample C2 is Co 3 o 4 / ZnAl 2 o 4 •0.1Al 2 o 3 . Pack sample C2 in a fixed-bed single-tube reactor under 10% H 2 Reduction at 600°C for 2h in -90% Ar atmosphere to produce reduced ZnAl 2 o 4 •xAl 2 o 3 (x=0.1) Carrier loaded cobalt solid phase material, named C2R. Expressed in the format of "support / carrier", the chemical composition of the sample C2R is Co 0 / ZnAl 2 o 4 •0.1Al 2 o 3 . Metallic cobalt in sample C2R (i.e. Co 0 phase) with a weight content of 15%. Carrier (ZnAl 2 o 4 •0.1Al 2 o 3 ) is 85% by weight, and the molar ratio of Zn element to Al element in the carrier is 1:2.2. Cool down to room temperature (25°C) after reducing ...

Embodiment 3

[0030] Adopt the method for preparing catalyst by coprecipitation described in embodiment 1, make unreduced ZnAl by adjusting the proportioning consumption of reagent 2 o 4 •xAl 2 o 3 (x=0.3) Carrier loaded cobalt solid phase material, named C3. Expressed in the format "Substance / Carrier", the chemical composition of sample C3 is Co 3 o 4 / ZnAl 2 o 4 •0.3Al 2 o 3 . Pack sample C3 in a fixed-bed single-tube reactor under 50% H 2 -50%N 2 Reduced at 400°C for 50h in the atmosphere to produce reduced ZnAl 2 o 4 •xAl 2 o 3 (x=0.3) Carrier loaded cobalt solid phase material, named C3R. Expressed in the format of "support / carrier", the chemical composition of the sample C3R is Co 0 / ZnAl 2 o 4 •0.3Al 2 o 3 . Metallic cobalt in sample C3R (i.e. Co 0 phase) with a weight content of 15%. Carrier (ZnAl 2 o 4 •0.3Al 2 o 3 ) is 85% by weight, and the molar ratio of Zn element to Al element in the carrier is 1:2.6. Reduce the temperature of sample C3 to 60°C and ...

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Abstract

The invention discloses a method for catalytic conversion of synthesis gas, that is, synthesis gas (a mixture of carbon monoxide and hydrogen) is used as raw material, ZnAl2O4•xAl2O3 (0.1≤x≤0.9) supports cobalt as a catalyst, and the catalyst is first The cobalt in it is reduced to a metal state, and then the reaction temperature is 200-300 ° C, the reaction pressure is 0.1-10.0 MPa, and the reaction space velocity is 100-10000 liters (standard state syngas) • kg (catalyst) - 1 • hour Under the condition of -1, simultaneously generate the syngas catalytic conversion method of cyclohexanone and hydrocarbons. The method has the characteristics of simple process, easy industrialization and the like, and can be applied in industrial production.

Description

technical field [0001] The invention relates to a method for the catalytic conversion of synthesis gas. Specifically, a method by using ZnAl 2 o 4 •xAl 2 o 3 (0.1≤x≤0.9) A method for catalytically converting synthesis gas into cyclohexanone and hydrocarbons by loading cobalt on a carrier as a catalyst. Background technique [0002] Cyclohexanone (molecular formula C 6 h 10 O) is a raw material used in the production of nylon, caprolactam, adipic acid, spices, medicines, resins and other chemical products. It is also widely used as a solvent in the recycling of paints, dyes, paints, pesticides, rubber, printing and plastics. . According to different raw materials used in manufacturing, the methods for industrial production of cyclohexanone mainly include phenol hydrogenation method, cyclohexene hydration method and cyclohexane oxidation method, of which more than 90% adopt cyclohexane oxidation method ("Guangdong Chemical Industry" 2013 Vol. 40, No. 20, p. 7-9). [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C45/49C07C49/403B01J23/80C10L3/10
CPCB01J23/002B01J23/80C07C45/49C10L3/10C07C49/403
Inventor 邢宇刘振新吴德鹏薛莹莹郭雪辉王力臻方少明
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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