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Effective carbon dioxide conversion catalyst and preparing method thereof

A carbon dioxide and catalyst technology, applied in the field of synthesis gas generation, can solve problems such as catalyst stability and nickel catalyst deactivation

Inactive Publication Date: 2013-06-26
KOREA RES INST OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0034] And, another object of the present invention is to solve the stability problem of the catalyst caused by the deactivation of the existing nickel catalyst, and to provide a method for preparing a catalyst utilizing a spinel-type carrier as a cobalt-based catalyst for modification reaction

Method used

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  • Effective carbon dioxide conversion catalyst and preparing method thereof
  • Effective carbon dioxide conversion catalyst and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0093] The precursor Mg(NO 3 ) 2 with Al(NO 3 ) 3 dissolved in distilled water to make the spinel structure MgO / Al 2 o 3 The ratio reaches 0.1, and then add the precipitant Na while stirring 2 CO 3 , titration precipitation was performed to bring the pH to 8.0. The precipitated material was filtered with distilled water to remove Na dissolved in the precipitated material. The filtered precipitate was fired at 500° C. to prepare a spinel-type support.

[0094] Relative to the amount of monolithic catalyst, prepare the support Mg / Al 2 o 4 to 80wt%, and mixed with 200ml distilled water, the Co(NO 3 ) 3 9H 2 O was dissolved and mixed in distilled water so that the proportion of Co became 20wt%. The mixed slurry is distilled by a vacuum distillation device to prepare a powder state. The prepared powder was dried at 80° C. for 3 hours, and then fired at 400° C. in an air atmosphere for 6 hours. The prepared catalyst is in a fixed bed reactor at 850°C and 0.1MPa, at 10...

Embodiment 2

[0096] The precursor Mg(NO 3 ) 2 with Al(NO 3 ) 3 dissolved in distilled water to make the spinel structure MgO / Al 2 o 3 The ratio reaches 0.1, and then add the precipitant Na while stirring 2 CO 3 , titration precipitation was performed to bring the pH to 8.0. The precipitated material was filtered with distilled water to remove Na dissolved in the precipitated material. The filtered precipitate was fired at 500° C. to prepare a spinel-type support.

[0097] Relative to the amount of monolithic catalyst, prepare support MgO / Al 2 o 3 to 80wt%, and mixed with 200ml distilled water, the Co(NO 3 ) 3 9H 2 O, Ru(NO) (NO 3 ) 3 They were respectively dissolved and mixed in distilled water to achieve a ratio of 19.8wt% Co-0.2wt% Ru. The mixed slurry is distilled by a vacuum distillation device to prepare a powder state. The prepared powder was dried at 80° C. for 3 hours, and then sintered at 400° C. in an air atmosphere for 6 hours. The prepared catalyst is in a fixe...

Embodiment 3

[0099] The precursor Mg(NO 3 ) 2 with Al(NO 3 ) 3 dissolved in distilled water to make the spinel structure MgO / Al 2 o 3 The ratio reaches 0.1, and then add the precipitant Na while stirring 2 CO 3 , titration precipitation was performed to bring the pH to 8.0. The precipitated material was filtered with distilled water to remove Na dissolved in the precipitated material. The filtered precipitate was fired at 500° C. to prepare a spinel-type support.

[0100] Relative to the amount of monolithic catalyst, prepare the support Mg / Al 2 o 4 to 80wt%, and mixed with 200ml distilled water, the Co(NO 3 ) 3 9H 2 O, ZrOCl 2 、Ru(NO)·(NO 3 ) 3 Dissolved and mixed in distilled water respectively to achieve a ratio of 14.86wt%Co-0.14wt%Ru-5wt%Zr. The mixed slurry is distilled by a vacuum distillation device to prepare a powder state. The prepared powder was dried at 80° C. for 3 hours, and then sintered at 400° C. in an air atmosphere for 6 hours. The prepared catalyst is...

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Abstract

The invention relates to a preparing method of catalysts, and particularly relates to a preparing method of cobalt catalysts in [Formula 1], as well as a method for converting carbon dioxides to forming gases by using the method. In [Formula 1] (a) Co / (d)Z, [in Formula 1, Z denotes a spinel carrier formed by A, B, and O; A denotes more than one substance selected from the group formed by Mg, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd, and Sn; B denotes more than one substance selected from the group formed by A1, Ga, In, Ti, V, Cr, Mn, Fe, Ni, and Co; a denotes the weight of Co, D denotes the weight of spinel carrier Z; with respect to the d accounting for 100 by weight, a accounts for 1-100 by weight.] Compared with the catalysts in the prior art, the activity degree of hydrocarbon and carbon dioxide continuously maintain in the same conversion speed to maintain higher activity and stability.

Description

technical field [0001] The present invention relates to a method for producing a synthesis gas containing a compound used as an intermediate for producing high value-added hydrocarbons as a technology for recycling hydrocarbons and carbon dioxide, which have a large impact on global warming. hydrogen and carbon monoxide. It relates to a cobalt-based modified catalyst and its preparation method, and uses the catalyst to prepare synthesis gas containing carbon monoxide and hydrogen. The activity of the cobalt-based modified catalyst is better than that of the existing nickel-modified catalyst, and it is used to solve Catalyst deactivation. Background technique [0002] Due to the warming of the earth, countries around the world have announced plans to reduce greenhouse gas emissions. Among them, the Korean government has set a greenhouse gas reduction target of 30% reduction in 2020 compared with the EU's expected emission value for developing countries. Therefore, the indust...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J23/89C10J1/20
CPCY02P20/52
Inventor 宋相勋张泰善金凡植
Owner KOREA RES INST OF CHEM TECH
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