Catalyst for synthesizing low carbon mellow with synthesis gas and preparation method thereof

A catalyst and low-carbon alcohol technology, applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve the problems of low alcohol selectivity, uneconomical, low CO conversion rate, etc.

Active Publication Date: 2008-05-28
SINOPEC NANJING RES INST OF CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above catalysts have their own characteristics. When the conversion rate of CO is high, C 2 + Alcohol selectivity is low or water content is high, when C 2 + When the alcohol selectivity is high, the CO conversion rate is low, even if it is applied in industry, it is not economical

Method used

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  • Catalyst for synthesizing low carbon mellow with synthesis gas and preparation method thereof
  • Catalyst for synthesizing low carbon mellow with synthesis gas and preparation method thereof
  • Catalyst for synthesizing low carbon mellow with synthesis gas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] According to the general formula Cu(Zn) 1.25 (Cr) 0.38 (Al) 0.38 (M) 0 (A)e(O)x. Take 178ml of 2.0M copper nitrate solution, 222ml of 2.0M zinc nitrate solution, 100ml of 1.35M aluminum nitrate solution, and 100ml of 1.35M chromium nitrate solution to prepare a 1000ml mixed solution, and mix the mixed solution with sodium carbonate in a sedimentation tank with stirring Co-precipitate the solution, control the precipitation temperature at 75°C to 80°C, and the pH value of the end point of the precipitation is 7.5, then age at 80°C to 85°C for 30 minutes, then wash, dry, crush, and roast at 320°C to obtain 11.5g K 2 CO 3 Prepare a 100ml aqueous solution, mix it with the above-mentioned base material evenly, then dry it, roast it at 350°C, add an appropriate amount of water and graphite, and finally press it into a cylindrical tablet, and then crush it into 0.45mm-0.90mm particles to obtain a usable catalyst (K1)

Embodiment 2

[0018] According to the general formula Cu(Zn) 0.75 (Cr) 0.3 (Al) 0.3 (M) 0 (A)e(O)x. Take 229ml of 2.0M copper nitrate solution, 171ml of 2.0M zinc nitrate solution, 100ml of 1.35M aluminum nitrate solution, and 100ml of 1.35M chromium nitrate solution to prepare a 1000ml mixed solution, and mix the mixed solution with sodium carbonate in a sedimentation tank with stirring Co-precipitate the solution, control the precipitation temperature at 75°C to 80°C, and the pH value of the end point of the precipitation is 7.5, then age at 80°C to 85°C for 30 minutes, and then wash, dry, pulverize, and roast at 320°C to obtain the base material. Take 6.13gK 2 CO 3 Prepare a 100ml aqueous solution, mix it with the above-mentioned base material evenly, then dry it, roast it at 350°C, add an appropriate amount of water and graphite, and finally press it into a cylindrical tablet, and then crush it into 0.45mm-0.90mm particles to obtain a usable catalyst (K2).

Embodiment 3

[0020] According to the general formula Cu(Zn) 1.5 (Cr) 0.65 (Al) 0.65 (M) 0.12 (A)e(O)x. Take 178ml of 2.0M copper nitrate solution, 266ml of 2.0M zinc nitrate solution, Al(NO3)3 9H2O86.5g, Ce(NO 3 ) 3 ·6H 2 O11.6g, Cr(NO 3 ) 3 9H 2 O92.3g, 50% Mn(NO 3 ) 3 9.1g of the solution is prepared into 1000ml mixed solution, and the mixed solution and sodium carbonate solution are co-precipitated in a precipitation tank with stirring, the precipitation temperature is controlled at 75°C to 80°C, and the pH value at the end of the precipitation is 7.5, and then at 80°C to Aged at 85°C for 30 minutes, then washed, dried, crushed, and roasted at 320°C to obtain the base material. Take 4.3gK 2 CO 3 Prepare a 100ml aqueous solution, mix it with the above-mentioned base material evenly, then dry it, roast it at 350°C, add an appropriate amount of water and graphite, and finally press it into a cylindrical tablet, and then crush it into 0.45mm-0.90mm particles to obtain a usable ...

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Abstract

The invention discloses a catalyst for synthesizing low carbon mixed alcohol with synthetic gas and a preparation method. The main components of the catalyst are copper oxide, zinc oxide, chromium oxide, alumina, and an appropriate amount of other assistants, which are expressed by the general formula Cu(Zn)a(Cr)b(Al)c(M)d(A)e(O)x; the catalyst is prepared by coprecipitation, and the assistant is added by impregnation. Under appropriate conditions, the catalyst can lead CO and hydrogen to react to produce a mixture of oxidation compounds which comprises methanol, ethanol, propanol, isobutanol, pentanol, and a small amount of C5.

Description

Technical field: [0001] The invention belongs to the technical field of catalysts, and in particular relates to a catalyst for synthesizing low-carbon alcohols from synthesis gas and a preparation method thereof. Background technique: [0002] Since the 1970s, mankind has realized that energy development and environmental protection will become two strategic themes for the survival and development of human society. With the continuous increase of human demand for mineral resources and the continuous consumption of natural resources, the resources that the earth can supply to human beings are also decreasing. It is very urgent for human beings to actively seek and develop new energy systems. In the world's energy structure, oil accounts for only 6.6%, while coal accounts for 78.9%. As the world's largest coal-producing country, China's energy structure is characterized by rich coal and little oil. CO and H can be easily produced today from coal 2 , how to utilize CO and H ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/86B01J35/02C07C29/154
Inventor 殷玉圣张皓储政姜勤魏士新
Owner SINOPEC NANJING RES INST OF CHEM IND CO LTD
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