Co-based nano-catalyst for hydrogen production by ethanol steam reforming and preparation method thereof

A steam reforming, cobalt-based catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of difficult to obtain high specific surface area, high Dispersion and uniform dispersion of catalysts, it is difficult to solve the problems of catalytic deactivation, low conversion temperature, etc., to achieve good catalytic activity, high catalytic activity and selectivity, and high porosity
CN101444738BInactive Publication Date: 2011-07-20HUNAN SHANGYIFENG NEW MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN SHANGYIFENG NEW MATERIAL TECH CO LTD
Publication Date
2011-07-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a Co-based nano-catalyst for hydrogen production by ethanol steam reforming and a preparation method thereof. The catalyst is made by taking nanoporous silicon dioxide aerogel as a catalyst carrier, a metal elementary substance cobalt nanowire as an active component, and CeO2 nano-particles and ZnO nano-particles as adjuvants. The preparation method comprises the following steps: preparing a sol from silanolate, an alcohol solvent, cobalt nitrate and zinc nitrate, cerous nitrate and an acidic catalyst at certain proportions; forming a wet gel complex, and then performing supercritical fluid drying. The catalyst has strong catalytic activity and selectivity for the hydrogen production by the ethanol steam reforming, has higher hydrogen yield and stronger CO2 selectivity at a lower temperature, limits the selectivity of byproducts CH4 and CO at a lower level, and has good deactivation resistance and stability. Meanwhile, the preparation method has simple process, low cost and certain mechanical strength.
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Description

technical field

[0001] The invention belongs to the technical field of catalyst materials for hydrogen production by ethanol steam reforming of liquid fuel used in fuel cells, and relates to a cobalt-based catalyst for hydrogen production by ethanol steam reforming and a preparation method thereof, in particular to a silicon dioxide gas condensation Cobalt-based nano catalyst material with gel as catalyst carrier and preparation method thereof. Background technique

[0002] Fuel cells directly and efficiently convert the chemical energy stored in fuel and oxidant into electrical energy. High-purity, non-toxic hydrogen is an ideal fuel for fuel cells. Currently, liquid fuel reforming is a better way to produce hydrogen.

[0003] Ethanol is a renewable resource, non-toxic, and does not contain sulfur that is likely to poison the platinum electrodes of fuel cells. It is an environmentally friendly fuel suitable for hydrogen production. Ethanol steam reforming is an important...

Claims

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