Preparation and application of mixed oxide-doped nano-copper-cobalt alloy catalyst

A technology of mixed oxides and catalysts, applied in the direction of metal/metal oxide/metal hydroxide catalysts, preparation of organic compounds, preparation of hydroxyl compounds, etc., can solve the problem of long-term stability of carbon materials and the unfavorable formation of Cu-Co Alloy, reduce catalyst selectivity and other issues, to achieve the effect of low cost, improved stability, not easy to sinter
CN104645991BActive Publication Date: 2017-03-15TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2017-03-15

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Abstract

The invention relates to a preparation method and application of a mixed oxide-doped nano copper-cobalt alloy catalyst. According to the catalyst, CuCo serves as an active component and mixed oxide serves as a carrier, wherein Cu accounts for 5-25% in the catalyst in percentage by mass, Co accounts for 5-25% in the catalyst in percentage by mass, Al2O3 accounts for 13-25% in the catalyst in percentage by mass, and one of SiO2, ZrO2, CeO2 or TiO2 accounts for the balance. The mixed oxide-doped nano copper-cobalt alloy catalyst is obtained by calcinating and reducing a hydroxide-doped hydrotalcite-like precursor. Since silicon, zirconium, cerium and titanium ions cannot enter a hydrotalcite-like laminate, the dispersion of copper and cobalt on the surface is improved, the dispersion degree of active components is increased, and the formation of a hotspot in a reaction process of synthesizing low-carbon alcohol is relieved. The catalyst is relatively high in low-carbon alcohol selectivity and low-temperature activity, easy to operate, and low in cost and is applicable to industrial production.
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Description

technical field

[0001] The invention relates to the preparation and application of a mixed oxide-doped nano-copper-cobalt alloy catalyst, which belongs to the technical field of metal catalysts. Background technique

[0002] With the increasing consumption of petroleum resources, the energy problem is intensifying, and it is imminent to develop a new energy system. Syngas (CO and H) produced from natural gas or coal or renewable biomass resources 2 Mixed gas) to prepare low-carbon alcohols (alcohols with 2-6 carbon atoms) has attracted great attention. Low-carbon alcohol can be used as a high-quality power fuel. Its combustion is more complete than gasoline and diesel, and there are fewer harmful substances in exhaust emissions. It is an environmentally friendly fuel; in addition, low-carbon alcohol can also be used as one of the means of coal liquefaction to achieve coal alkylation And solubilization and as a liquefied petroleum gas substitute. However, in the process of...

Claims

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