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Supported catalyst for preparing low-carbon alcohol from synthesis gas as well as preparation method and application thereof

A catalyst and synthesis gas technology are applied in the preparation of a supported synthesis gas to lower alcohol catalyst, a supported synthesis gas to lower alcohol catalyst, and the application fields of synthesis gas to lower alcohol, which can solve the problem of low alcohol selectivity. , low CO conversion rate and high reaction pressure, to achieve the effect of reducing catalyst cost, process difficulty and broad application prospects

Pending Publication Date: 2022-05-13
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the existing Mo-based catalysts in the prior art for the synthesis of low-carbon alcohols from synthesis gas, low CO conversion, C 2 + The problem of low alcohol selectivity and high reaction pressure provides a supported catalyst for producing low-carbon alcohols from syngas and its preparation method and application

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  • Supported catalyst for preparing low-carbon alcohol from synthesis gas as well as preparation method and application thereof
  • Supported catalyst for preparing low-carbon alcohol from synthesis gas as well as preparation method and application thereof
  • Supported catalyst for preparing low-carbon alcohol from synthesis gas as well as preparation method and application thereof

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preparation example Construction

[0028] The second aspect of the present invention provides a method for preparing a low-carbon alcohol catalyst from supported synthesis gas, the method comprising:

[0029] Loading the first active component source, the second active component source and the auxiliary agent on the carrier respectively, followed by drying and calcining in sequence to obtain a catalyst precursor, and then sulfiding the catalyst precursor to obtain the catalyst;

[0030] Wherein, the carrier is a carbonate of alkaline earth metal, and the alkaline earth metal is selected from at least one of magnesium, calcium, strontium and barium; and / or the source of the first active component is a compound containing the first active element , the first active element is selected from at least one of the elements of Group VIB; and / or the source of the second active component is a compound containing a second active element, the second active element is selected from the elements of Group VIII at least one of...

Embodiment 1

[0061] Weighing MgO content is 40-45wt%, specific surface area is 55m 2 70g of basic magnesium carbonate per gram was put into a 120°C drying oven and dried for 2 hours. Dissolve 18.4g of cobalt nitrate in 25g of deionized water, and stir to form a solution. The cobalt nitrate solution was impregnated in the basic magnesium carbonate carrier, and dried in a drying oven at 120°C for 2 hours. 13.92g of (NH 4 ) 6 Mo 7 o 24.4 h 2 O was dissolved in 25g of deionized water and stirred to form a solution. Will (NH 4 ) 6 Mo 7 o 24.4 h 2 The O solution was impregnated in the basic magnesium carbonate carrier, dried in a 120°C drying oven for 2 hours, and finally baked in a 350°C muffle furnace for 3 hours. Dissolve 8.88g of potassium carbonate in 25g of deionized water, and stir to prepare a solution. The potassium carbonate solution was impregnated in the above CoO and MoO 3 The supported basic magnesium carbonate carrier was dried in a 120°C drying oven for 2 hours, and...

Embodiment 2

[0063] Weighing MgO content is 40-45wt%, specific surface area is 55m 2 / g of basic magnesium carbonate 71.7g, put into 100 ℃ drying oven and dry 2.5 hours. Dissolve 15g of cobalt nitrate in 25g of deionized water, and stir to form a solution. The cobalt nitrate solution was impregnated in the basic magnesium carbonate carrier, and dried in a drying oven at 150° C. for 1.5 hours. 13.92g of (NH 4 ) 6 Mo 7 o 24.4 h 2 O was dissolved in 25g of deionized water and stirred to form a solution. Will (NH 4 ) 6 Mo 7 o 24.4 h 2 The O solution was impregnated in the basic magnesium carbonate carrier, dried in a 150°C drying oven for 1.5 hours, and finally baked in a 300°C muffle furnace for 3.5 hours. Dissolve 9.35g of potassium carbonate in 25g of deionized water, and stir to prepare a solution. The potassium carbonate solution was impregnated in the above CoO and MoO 3 The loaded basic magnesium carbonate carrier was put into a drying oven at 120°C for 2 hours, and finall...

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Abstract

The invention relates to the field of catalysts for preparing low-carbon alcohol from synthesis gas, and discloses a supported catalyst for preparing low-carbon alcohol from synthesis gas and a preparation method and application thereof, the catalyst comprises a carrier, and a first active component, a second active component and an auxiliary agent which are supported on the carrier; wherein the carrier is carbonate of alkaline earth metal, the first active component is sulfide of VIB group element, the second active component is sulfide of VIII group element, and the auxiliary agent is carbonate of alkali metal; the alkaline earth metal is selected from at least one of magnesium, calcium, strontium and barium. The supported catalyst for preparing the low-carbon alcohol from the synthesis gas is used for a reaction for preparing the low-carbon alcohol from the synthesis gas, the CO conversion rate of 30% or above, the total alcohol selectivity of 60% or above and the C2 + alcohol selectivity of 75% or above in an alcohol product can be achieved under the low-pressure condition of 5 MPa, the catalyst cost and the process difficulty can be effectively reduced, and the supported catalyst has wide application prospects.

Description

technical field [0001] The invention relates to the field of low-carbon alcohol catalysts for synthesis gas production, in particular to a preparation method of a supported catalyst for synthesis gas production of low-carbon alcohols, the loaded catalyst for synthesis gas production of low-carbon alcohols prepared by the method, and the supported catalyst for production of low-carbon alcohols for synthesis gas production. Application of carbon alcohol catalyst in synthesis gas to low carbon alcohol. Background technique [0002] Low-carbon alcohols generally refer to alcohol mixtures with 2-6 carbon atoms, which have the characteristics of high octane number, good antiknock performance, and good miscibility with gasoline, and can replace the controversial methyl tert-butyl ether (MTBE ) is used as a gasoline additive, and has huge application value and market potential. Low-carbon alcohols can also be directly used as clean liquid fuels with full combustion, NO x The advan...

Claims

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Application Information

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IPC IPC(8): B01J27/236C07C31/02C07C29/153
CPCB01J27/236C07C29/153C07C31/02
Inventor 田大勇刘媛刘延鑫
Owner CHNA ENERGY INVESTMENT CORP LTD
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