Preparation method of carbon dioxide methanation catalyst

A methanation catalyst and carbon dioxide technology, applied in the field of catalysis, can solve problems such as poor hydrothermal stability and carbon deposition, and achieve the effects of high mechanical strength, prevention of carbon deposition, and good hydrothermal stability

Active Publication Date: 2016-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the supports of these catalysts have poor hydrothermal stabili...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Take 60g of TS-1 molecular sieve and heat-treat at 120°C for 1 hour; 2) Add 600g of γ-alumina and 300g of deionized water to the heat-treated TS-1 molecular sieve, mix well, and 60% of the zeolite on the molecular sieve Hydrogen can be exchanged for nickel; 3) Add 15g of triethylhexyl phosphoric acid to the uniformly mixed material, then add deionized water, and knead evenly; 4) Granulate the kneaded material to obtain particles with good fluidity, and then The particles were dried at 100°C; 5) The dried particles were mixed evenly with 33g of graphite, and pressed into tablets; 6) The catalyst carrier was subjected to liquid-phase ion exchange with a 1mol / L mixed solution of nickel nitrate and copper nitrate for 1 hour, and then Catalyst I was obtained by calcining at 700°C for 1 h.

Embodiment 2

[0024] 1) Take 480g TS-1 molecular sieve, heat treatment at 700°C for 3 hours; 2) Add 600g γ-alumina and 300g deionized water to the heat-treated TS-1 molecular sieve, mix evenly, 80% of the molecular sieve Hydrogen can be exchanged for nickel; 3) Add 15g of triethylhexyl phosphoric acid to the uniformly mixed material, then add deionized water, and knead evenly; 4) Granulate the kneaded material to obtain particles with good fluidity, and then The particles were dried at 100°C; 5) The dried particles were mixed with 540g graphite evenly, and pressed into tablets; 6) The catalyst carrier was subjected to liquid-phase ion exchange with a 3mol / L mixed solution of nickel nitrate and copper nitrate for 3 hours, and then Calcined at 1200°C for 3h to obtain catalyst II.

Embodiment 3

[0026] 1) Take 600g of TS-1 molecular sieve and heat-treat at 400°C for 2 hours; 2) Add 18g of γ-alumina and 300g of deionized water to the heat-treated TS-1 molecular sieve, mix well, and 70% of the molecular sieve Hydrogen can be exchanged for nickel; 3) Add 15g of triethylhexyl phosphoric acid to the uniformly mixed material, then add deionized water, and knead evenly; 4) Granulate the kneaded material to obtain particles with good fluidity, and then The particles were dried at 100°C; 5) The dried particles were mixed with 100g of graphite evenly, and pressed into tablets; 6) The catalyst carrier was subjected to liquid-phase ion exchange with a 2mol / L mixed solution of nickel nitrate and copper nitrate for 2 hours, and then Calcined at 1000°C for 2h to obtain catalyst Ⅲ.

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Abstract

A method for preparing a carbon dioxide methanation catalyst, which is prepared through the following steps: 1) heat-treating TS-1 molecular sieve; 2) combining the heat-treated molecular sieve with one of gamma-alumina, aluminum stearate, and aluminum nitrate Or mix more than one; 3) Add triethylhexyl phosphoric acid, sodium lauryl sulfate, methyl amyl alcohol, cellulose derivatives, polyacrylamide, gull gum, ethylene glycol, polyethylene glycol to the above mixture Alcohol, fatty acid polyethylene glycol ester, glycerin or one or both of them are mixed, then water is added, and mixed evenly; 4) The mixed material is granulated to obtain particles, and then the particles are dried; 5) The dried The particles are added to the graphite and mixed evenly, and shaped to obtain a catalyst carrier; 6) The catalyst carrier and a mixed solution of nickel nitrate and copper nitrate are subjected to liquid-phase ion exchange at room temperature, and then calcined to obtain a catalyst. The carbon dioxide methanation catalyst prepared by the method has good hydrothermal stability and carbon deposition resistance.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and in particular relates to a preparation method of a carbon dioxide methanation catalyst. Background technique [0002] my country is a major emitter of carbon dioxide, accounting for about a quarter of the world's total emissions, and the growth trend of emissions will continue for 20 to 30 years. In recent years, developed countries such as Europe and the United States have successively introduced carbon tariffs (or carbon emission taxes), which will greatly increase the cost of my country's export commodities (including petrochemical products and polymer materials, etc.). At present, low-carbon economy and low-carbon utilization of carbon resources have become the main development trend. [0003] Carbon dioxide is one of the most abundant carbon sources on earth. With the increasing depletion of petroleum resources and the serious ecological and environmental problems caused by the massi...

Claims

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Application Information

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IPC IPC(8): B01J29/89C07C9/04C07C1/12
Inventor 黄先亮吴学其徐本刚蔡进蔡成伟张杰吴琳朱艳芳王金利魏士新
Owner CHINA PETROLEUM & CHEM CORP
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