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Method of reverse water gas shift reaction for reverse water gas shift catalyst

A technology for shifting catalyst and reverse water gas, applied in the directions of carbon monoxide, reagents, educts, etc., to achieve good catalytic activity, low cost, and good activation effect.

Active Publication Date: 2013-07-03
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there is no CeO 2 Research report on metal-based catalysts for high temperature reverse water gas shift reaction, how to develop CeO 2 Efficient activation methods for metal-based catalysts to be explored

Method used

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  • Method of reverse water gas shift reaction for reverse water gas shift catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Activation of the catalyst

[0031] Use 60-100 mesh nickel-cerium catalyst with a mass percentage of 0.25% nickel as the reverse water gas shift catalyst, and use high-purity carbon dioxide gas with a purity of more than 99.99% to activate the nickel-cerium catalyst at 600 ° C for 2 hours, calculated as 1 mg of nickel-cerium catalyst , high-purity carbon dioxide gas ventilation rate at 2.5ml / min.

[0032] (2) Reverse water gas shift reaction

[0033] Mix the activated nickel-cerium catalyst with 60-100 mesh quartz sand evenly in a weight ratio of 1:2.5, and pass the raw material gas of the reverse water gas. Based on 1 mg of nickel-cerium catalyst, the ventilation rate of the raw material gas of the reverse water gas is 5ml / min. The composition of water gas raw material gas is 50vol.%CO 2 , 50vol.%H 2 ; Catalyzed reaction at 600 ° C to obtain water gas.

Embodiment 2

[0035] (1) Activation of the catalyst

[0036]Use 60-100 mesh nickel-cerium catalyst with a mass percentage of 0.5% nickel as the reverse water gas shift catalyst, and use high-purity carbon dioxide gas with a purity of more than 99.99% to activate the nickel-cerium catalyst at 800 ° C for 1 hour, calculated as 1 mg of nickel-cerium catalyst , high-purity carbon dioxide gas ventilation rate at 5ml / min.

[0037] (2) Reverse water gas shift reaction

[0038] Mix the nickel-cerium catalyst after the activation treatment with 60-100 mesh quartz sand according to the weight ratio of 1: 3, and feed the feed gas of reverse water gas. Based on 1 mg of nickel-cerium catalyst, the ventilation rate of feed gas for reverse water gas is 8ml / min. The composition of water gas raw material gas is 50vol.%CO 2 , 50vol.%H 2 ; Catalyzed reaction at 800 ° C to obtain water gas.

[0039]

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Abstract

The invention discloses a method of reverse water gas shift reaction for reverse water gas shift catalyst. The method comprises the following steps: firstly, catalyst activation: adopting 60 to 100 mesh nickel cerium catalyst as reverse water gas shift catalyst, performing activating treatment to the nickel cerium catalyst for 1 to 2 hours at 600 to 800 DEG C through high-purity carbon dioxide gas; and secondly, reverse water gas shift reaction: uniformly mixing the nickel cerium catalyst conducted to activating treatment and 60 to 100 mesh quartz sand according to the weight ratio of 1:(2.5 to 3), feeding reverse water gas feed gas, and performing catalytic reaction at 600 to 800 DEG C so as to obtain water gas. The method has the advantages that the nickel cerium catalyst is selected for the reverse water gas shift reaction, simultaneously the high-purity carbon dioxide gas is adopted for performing activation, the activation effect is good, the catalytic activity and the thermal stability are good during the catalytic reaction, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a method for using a reverse water gas shift catalyst for a reverse water gas shift reaction. Background technique [0002] The reverse water gas shift reaction equation is as follows: [0003] CO 2 + H 2 = CO + H 2 O ΔH=+41 kJ / mol [0004] The reaction is a reversible endothermic equimolar reaction, and high temperature is beneficial to the reverse water gas shift reaction. [0005] In recent years, in order to solve problems such as energy shortage, resource shortage and greenhouse gas effect, countries around the world have paid great attention to CO 2 development and utilization research. CO 2 As a carbon source, it is considered to be an inevitable development trend for human beings to use carbon sources. CO in the atmosphere and water 2 The carbon content is ten times that of oil, natural gas and coal. Therefore, when oil, gas, and coal resources ...

Claims

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Application Information

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IPC IPC(8): C01B31/18C01B32/40
CPCY02P20/141
Inventor 王路辉刘辉陈英杨淑清张仁坤
Owner ZHEJIANG OCEAN UNIV
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