Lithium aluminum hydrotalcite-derived nickel-based catalysts for autothermal reforming of acetic acid to hydrogen

A nickel-based catalyst, autothermal reforming technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, hydrogen, etc., can solve the problem of catalyst deactivation, easy to be oxidized, not resistant to sintering and other problems, to achieve the effect of promoting gasification reaction, promoting adsorption activation, and improving dispersion degree
CN109847757BActive Publication Date: 2019-11-05CHENGDU UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHENGDU UNIVERSITY OF TECHNOLOGY
Publication Date
2019-11-05

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Abstract

The invention relates to a lithium-aluminium hydrotalcite-derived nickle-based catalyst used for hydrogen production by acetic acid auto-thermal reforming. In order to solve the problem that for existing catalysts, in acetic acid auto-thermal reforming reaction, change of catalyst structures and oxidation and sintering of active components cause inactivation of the catalysts, the novel catalyst which is stable in structure, sintering-resistant, carbon-deposition-resistant and oxidation-resistant is provided. Chemical components of the catalyst are (LiO0.5)a(NiO)b(AlO1.5)c, wherein a is 1.47-3.63, b is 0.38-0.60, and c is 2.00-4.00. According to the lithium-aluminium hydrotalcite-derived nickle-based catalyst used for hydrogen production by acetic acid auto-thermal reforming, a coprecipitation method is adopted for preparing a precursor of a Li-Al carbonate hydrotalcite structure, through calcination, the nickel aluminate Li-Ni-Al-O compound oxide catalyst with lithium partially replaced is obtained, gasification of a carbon-containing intermediate is promoted, and the thermal stability and the catalytic activity of the catalyst in the acetic acid auto-thermal reforming reaction areimproved.
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Description

technical field

[0001] The invention relates to a nickel-based catalyst for the autothermal reforming of acetic acid to produce hydrogen, in particular to a nickel-based catalyst for the autothermal reforming of acetic acid to produce hydrogen, which uses a lithium aluminum hydrotalcite structure as a precursor. The field of producing hydrogen by autothermal reforming of acetic acid. Background technique

[0002] Today, the main energy sources for human life and production are still fossil energy such as natural gas and oil; however, ecological and environmental problems such as resource scarcity, greenhouse effect, and air pollution are becoming increasingly prominent, and countries are paying more and more attention to the development and utilization of clean energy. In recent years, hydrogen energy has become a research hotspot for scientists from all over the world, mainly because of its high energy density, good thermal conductivity, good combustion performance, various...

Claims

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