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Catalyst for direct production of ethanol and co-production of methane from synthesis gas and preparation method thereof

A technology for producing ethanol and synthesis gas, which is applied in the preparation of organic compounds, molecular sieve catalysts, chemical instruments and methods, etc., which can solve the problems of high catalytic reaction pressure, low ethanol conversion rate and selectivity, and high production cost, and achieve improved conversion The effect of improving efficiency, improving selectivity, and improving utilization

Active Publication Date: 2017-03-22
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high production cost, low conversion rate and selectivity of ethanol, and high catalytic reaction pressure of the catalyst for the co-production of ethanol and methane from syngas in the prior art, a catalyst for the direct production of ethanol and co-production of methane from syngas is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) preparation mass percentage is the aqueous solution of 30% aluminum nitrate in the water of 65 ℃, prepares the Na2CO3 aqueous solution that mass percentage is 30% simultaneously;

[0031] (2) Under the condition of 55°C, mix 200g of aluminum nitrate aqueous solution with 100g of Na 2 CO 3 The aqueous solution is mixed, the precipitate is precipitated, filtered, and the filter cake is washed with distilled water at a temperature of 65°C until the washing liquid does not contain nitrate ions;

[0032] (3) Place the washed filter cake in ammonia water with a temperature of 60°C and a pH value of 10, let it stand for 5 hours, filter, and the filter cake is washed with distilled water at a temperature of 65°C again, and the gained filter cake is dried and washed successively. γ-Al after roasting 2 o 3 carrier;

[0033] (4) the γ-Al 2 o 3 100g of the carrier was mixed with 100g of molecular sieve HZSM-5, crushed, and then calcined at 400°C for 5 hours to obtain a co...

Embodiment 2

[0037] (1) preparation mass percentage is the aqueous solution of 30% aluminum nitrate in the water of 65 ℃, prepares the Na2CO3 aqueous solution that mass percentage is 30% simultaneously;

[0038] (2) Under the condition of 55°C, mix 200g of aluminum nitrate aqueous solution with 100g of Na 2 CO 3 The aqueous solution is mixed, the precipitate is precipitated, filtered, and the filter cake is washed with distilled water at a temperature of 65°C until the washing liquid does not contain nitrate ions;

[0039] (3) Place the washed filter cake in ammonia water with a temperature of 60°C and a pH value of 10, let it stand for 5 hours, filter, and the filter cake is washed with distilled water at a temperature of 65°C again, and the gained filter cake is dried and washed successively. γ-Al after roasting 2 o 3 carrier;

[0040] (4) the γ-Al 2 o 3 100g of the carrier was mixed with 100g of molecular sieve HZSM-5, crushed, and then calcined at 450°C for 5 hours to obtain a co...

Embodiment 3

[0044] (1) preparation mass percentage is the aqueous solution of 30% aluminum nitrate in the water of 65 ℃, prepares the Na2CO3 aqueous solution that mass percentage is 30% simultaneously;

[0045] (2) Under the condition of 55°C, mix 200g of aluminum nitrate aqueous solution with 100g of Na 2 CO 3 The aqueous solution is mixed, the precipitate is precipitated, filtered, and the filter cake is washed with distilled water at a temperature of 65°C until the washing liquid does not contain nitrate ions;

[0046] (3) Place the washed filter cake in ammonia water with a temperature of 60°C and a pH value of 10, let it stand for 5 hours, filter, and the filter cake is washed with distilled water at a temperature of 65°C again, and the gained filter cake is dried and washed successively. γ-Al after roasting 2 o 3 carrier;

[0047] (4) the γ-Al 2 o 3 100g of the carrier was mixed with 100g of molecular sieve HZSM-5, crushed, and then calcined at 500°C for 4 hours to obtain a co...

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Abstract

The invention discloses a catalyst for directly preparing ethyl alcohol and co-producing methane through synthesis gas. The catalyst comprises a carrier and active ingredients loaded on the carrier; in parts by weight, the carrier comprises 30-99 parts of a composite carrier which is formed by gamma-Al2O3 and activated carbon or a molecular sieve; and the active ingredients comprise oxides of 0.1-35 parts of Cu by weight, 0.1-10 parts of Co by weight, 0.05-10 parts of Sn by weight and 0.05-15 parts of Nb by weight. The composite carrier is easy to dehydrating the intermediate product in the synthesis gas conversion process, so as to facilitate conversion of the synthesis gas to methane or ethyl alcohol; the active ingredients are matched to promote the conversion of the intermediate product from methane to ethyl alcohol and preventing the conversion reaction of methane to olefin; due to the synergistic effect of the carrier and the active ingredients, the selectivity of the ethyl alcohol is improved, the catalytic activity is strengthened and the temperature and pressure of the synthesis gas conversion reaction are reduced.

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof, in particular to a catalyst for directly producing ethanol and co-producing methane from synthesis gas and a preparation method thereof, and belongs to the technical field of tail gas synthesis and transformation of hydrocarbon industry. Background technique [0002] Synthesis gas is a kind of raw material gas with carbon monoxide and hydrogen as the main components, which is used as a chemical raw material. Syngas has a wide range of raw materials. It can be produced by the vaporization of solid fuels such as coal or coke, it can also be produced from light hydrocarbons such as natural gas and naphtha, and it can also be produced from heavy oil by partial oxidation. According to different sources, compositions and uses of synthesis gas, they can also be called coal gas, synthetic ammonia raw material gas, methanol synthesis gas, etc. Synthesis gas has a wide range of raw materials,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/48B01J23/847B01J23/887B01J29/03C07C29/156C07C31/08C07C1/04C07C9/04
Inventor 崔永君周晓艳井口宪二张倩
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD