A mesoporous reverse water gas shift catalyst and its preparation method

A technology for changing catalysts and reverse water gas, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high energy consumption, stability and selectivity to be improved, and achieve less side effects of methanation, The effect of low Ni content and high conversion rate

Active Publication Date: 2019-09-24
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nickel-cerium catalyst is used for the reverse water gas shift reaction, the activation effect is good, and the catalytic reaction has good catalytic activity, but it needs high-purity carbon dioxide gas for activation, and the energy consumption is large
And the catalytic activity, stability and selectivity of the catalyst need to be improved

Method used

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  • A mesoporous reverse water gas shift catalyst and its preparation method
  • A mesoporous reverse water gas shift catalyst and its preparation method

Examples

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Effect test

Embodiment 1

[0016] A mesoporous reverse water gas shift catalyst and a preparation method thereof, the specific steps are:

[0017] 1) Preparation of SBA-16 carrier: Weigh 10~15 parts of F127 (tri-block copolymer), 25~35 parts of n-butanol, 400~600 parts of distilled water, and stir with a constant temperature magnetic stirrer at 43~47°C for 0.8~1.2 h to mix well. Add 15-20 parts of hydrochloric acid with a concentration of 35-40%, slowly add 40-60 parts of TEOS (tetraethyl orthosilicate) dropwise, and stir for 20-25 hours at a constant temperature of 43-47°C. Transfer the mixed solution to a reaction kettle, conduct hydrothermal reaction at 105-120°C for 20-25 hours, cool to room temperature, filter with suction, and wash 2-5 times. Transfer the white powder to a watch glass, dry it at 75~90°C for 10~15h, put it into a muffle furnace, set the heating rate at 1~1.5°C / min, raise it from room temperature to 550~600°C, and calcine for 3~5h , to obtain the target product SBA-16 carrier. Th...

Embodiment 2

[0020] A mesoporous reverse water gas shift catalyst and its preparation method, the most preferred steps are:

[0021] 1) Weigh 10.0g of F127 (tri-block copolymer), 30.0g of n-butanol, 475ml of distilled water, and stir with a constant temperature magnetic stirrer at 45°C for 1 hour until they are evenly mixed. Add 17.5ml of 37% hydrochloric acid, slowly add 47.3g of TEOS (tetraethyl orthosilicate) dropwise, and stir at a constant temperature of 45°C for 24h. The mixed solution was transferred to a reaction kettle, subjected to hydrothermal reaction at 110° C. for 24 hours, cooled to room temperature, suction filtered, and washed several times to obtain a white powder. Transfer the white powder to a watch glass, dry it at 80°C for 12h, put it into a muffle furnace, set the heating rate at 1°C / min, and then calcine it for 4h after rising from room temperature to 600°C to obtain the target product mesoporous SBA-16 carrier .

[0022] 2) Preparation of 1%Ni / SBA-16 catalyst: We...

Embodiment 3

[0025] A mesoporous reverse water gas shift catalyst and its preparation method:

[0026] 1) Weigh 10.0g of F127 (tri-block copolymer), 30.0g of n-butanol, 475ml of distilled water, and stir with a constant temperature magnetic stirrer at 45°C for 1 hour until they are evenly mixed. Add 17.5ml of 37% hydrochloric acid, slowly add 47.3g of TEOS (tetraethyl orthosilicate) dropwise, and stir at a constant temperature of 45°C for 24h. The mixed solution was transferred to a reaction kettle, subjected to hydrothermal reaction at 110° C. for 24 hours, cooled to room temperature, suction filtered, and washed several times to obtain a white powder. Transfer the white powder to a watch glass, dry it at 80°C for 12h, put it into a muffle furnace, set the heating rate at 1°C / min, and then calcine it for 4h after rising from room temperature to 600°C to obtain the target product mesoporous SBA-16 carrier .

[0027] 2) Preparation of 1%Ni / SBA-16 catalyst: Weigh 0.05gNi(NO3 ) 2 ·6H 2 O,...

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Abstract

The invention provides a mesoporous reversible water gas conversion catalyst and a preparation method thereof. The mesoporous reversible water gas conversion catalyst is prepared firstly by adopting a vacuum roasting manner. The beneficial effects are as follows: the mesoporous reversible water gas conversion catalyst is prepared by adopting a vacuum roasting method, the obtained catalyst is of a highly ordered porous structure, and an active ingredient Ni is highly dispersed into pore channels of an SBA-16 carrier in a nano-particle manner; the content of Ni is low, and the catalyst is free of methanation side effect; the catalyst is high in sintering resistance and high in stability; by using the prepared catalyst, the activity of catalyzing a carbon dioxide reversible water gas conversion reaction (CO-2+H2=CO+H2O) is high, the conversion rate of carbon dioxide is high, and the side reaction product methane is less; and the preparation steps are simple, the raw materials are wide in sources, and the economic value is high.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a mesoporous reverse water gas shift catalyst and a preparation method thereof. Background technique [0002] At present, energy and environmental issues have become the focus of attention all over the world. One is the greenhouse effect caused by the large amount of greenhouse gases emitted by fossil energy, which causes global warming and has a comprehensive negative impact on ecology, economy, and society. With the change of global climate, countries all over the world are paying more and more attention to the problem of global warming. CO emissions from fossil fuel combustion 2 It is the main cause of global climate change, and its contribution to global warming has exceeded 60%. The second is the insecurity of clean energy such as nuclear power, which brings unprecedented challenges to human production and survival. [0003] How to effectively reduce CO emi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/03C01B3/16
Inventor 王路辉刘辉
Owner ZHEJIANG OCEAN UNIV
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