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Sulfur-tolerant carbon dioxide methanation catalyst and preparation method thereof

A technology of methanation catalyst and carbon dioxide, which is applied in the field of catalysis, can solve the problems of complex preparation process of sol-gel method, high water consumption and energy consumption, no mention of sulfur resistance, etc., and achieve good sulfur resistance methanation performance, stable The effect of good performance and simple preparation process

Active Publication Date: 2021-04-13
SINOPEC NANJING RES INST OF CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN101745401B discloses a method for preparing a supported Mo-based sulfur-resistant methanation catalyst using a sol-gel method. The catalyst has good stability, but the preparation process of the sol-gel method is complicated, and the water consumption and energy consumption are huge
[0007] Patent CN103551053A discloses a copper-based carbon dioxide methanation catalyst and its preparation method, but its patent does not mention sulfur resistance

Method used

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  • Sulfur-tolerant carbon dioxide methanation catalyst and preparation method thereof

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Effect test

Embodiment 1

[0025] will contain Al(NO 3 ) 3 , Cu(NO 3 ) 2 The mixed solution and Na 2 CO 3 The solution was added to water concurrently, stirred and maintained for 1~2h. Add RhCl to the above solution 3 solution, add Na 2 CO 3 Solution, maintain the pH of the solution = 7~8, continue to stir and maintain for 1~2h. Add BiCl to the above solution 3 solution, add Na 2 CO 3 Solution, maintain the pH of the solution = 7~8, continue to stir and maintain for 1~2h. The molar ratio of the constituent elements of the catalyst is Al:Cu:Rh:Bi=10:0.5:0.01:0.01. After the precipitation, it was aged for 2 hours, washed, filtered, dried at 90°C for 12 hours, calcined at 350°C for 1 hour, and then pelletized to obtain catalyst I.

Embodiment 2

[0027] will contain Al(NO 3 ) 3 , Cu(NO 3 ) 2 The mixed solution and Na 2 CO 3 The solution was added to water concurrently, stirred and maintained for 1~2h. Add RhCl to the above solution 3 solution, add Na 2 CO 3 Solution, maintain the pH of the solution = 7~8, continue to stir and maintain for 1~2h. Add BiCl to the above solution 3 solution, add Na 2 CO 3 Solution, maintain the pH of the solution = 7~8, continue to stir and maintain for 1~2h. The molar ratio of the constituent elements of the catalyst is Al:Cu:Rh:Bi=10:3:0.3:0.2. After the precipitation, it was aged for 2 hours, washed, filtered, dried at 120°C for 24 hours, calcined at 700°C for 6 hours, and then pelletized to obtain catalyst II.

Embodiment 3

[0029] will contain Al(NO 3 ) 3 , Cu(NO 3 ) 2 The mixed solution and Na 2 CO 3 The solution was added to water concurrently, stirred and maintained for 1~2h. Add RhCl to the above solution 3 solution, add Na 2 CO 3 Solution, maintain the pH of the solution = 7~8, continue to stir and maintain for 1~2h. Add BiCl to the above solution 3 solution, add Na 2 CO 3 Solution, maintain the pH of the solution = 7~8, continue to stir and maintain for 1~2h. The molar ratio of the constituent elements of the catalyst is Al:Cu:Rh:Bi=10:0.5:0.1:0.1. After the precipitation, it was aged for 4 hours, washed, filtered, dried at 100°C for 18 hours, calcined at 550°C for 4 hours, and then pelletized to obtain catalyst III.

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Abstract

The invention discloses a sulfur-tolerant carbon dioxide methanation catalyst and a preparation method thereof. The catalyst is obtained by taking aluminum oxide as a carrier, copper oxide and Rh as active components and bismuth as an auxiliary agent and adopting a deposition precipitation method to precipitate aluminum, copper, rhodium and bismuth step by step. The sulfur-tolerant carbon dioxide methanation catalyst prepared by the method has good sulfur-tolerant methanation performance and good catalyst stability, and the preparation process is relatively simple.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and in particular relates to a sulfur-resistant carbon dioxide methanation catalyst and a preparation method thereof. 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 pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C07C1/12C07C9/04
CPCB01J23/8973B01J23/002C07C1/12B01J2523/00C07C2523/89C07C9/04B01J2523/17B01J2523/31B01J2523/54B01J2523/822
Inventor 黄先亮徐本刚蔡进王金利吴学其张杰朱艳芳
Owner SINOPEC NANJING RES INST OF CHEM IND CO LTD
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