Ni-based catalyst prepared through solution combustion and method thereof

Abstract

The invention relates to the technical field of a Ni-based catalyst, in particular to a Ni-based catalyst prepared through solution combustion and a preparation method thereof. The Ni-based catalyst is prepared from the following method including the steps of taking a certain amount of nickel nitrate hexahydrate or nickel acetate or nickel chloride and aluminum nitrate nonahydrate or aluminum acetate or aluminum chloride; using polypyrrolidone as a morphological regulating and controlling agent; adding a deionized water and ethylene glycol mixed solution; performing ultrasound processing to obtain a precursor test solution; raising the temperature through a muffle furnace program; burning the test solution in the muffle furnace; preparing a combustion body test specimen; then, performing cooing, grinding and sieving; performing high-temperature reduction by H2 to obtain the Ni-based catalyst prepared through solution combustion. The method belongs to a method for simply and fast preparing the Ni-based catalyst. The prepared catalyst test specimen is a flaky micro porous material; when the catalyst is used for synthesizing 1,4-butanediol through butynediol hydrogenation, the characteristics of high conversion rate and selectivity of the 1,4-butanediol, high stability and the like are realized. The industrialization is easy.

Description

technical field [0001] The invention relates to the technical field of nickel-based catalysts, and relates to a method for preparing nickel-based catalysts through a solution combustion process. Background technique [0002] For a long time, the catalyst preparation technology for producing BDO by the Reppe method has been monopolized by foreign countries, and there are only individual patent reports at present. my country's BDO industry started at the beginning of this century when Shanxi Sanwei Group introduced the Reppe production process from the American ISP company. So far, its key technology catalysts are still mainly imported, and have not been able to achieve localization. [0003] One of the documents "Molecular Catalysis" 2014.Vo1.28.NO 2.119~125 published "Ni / SiO 2 -Al 2 o 3 Activity and Stability of Catalysts in Aqueous Hydrogenation System", Ni / SiO with different Si contents were prepared by impregnation method 2 -Al 2 o 3 catalyst. The research shows t...

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Problems solved by technology

[0006] The invention provides a nickel-based catalyst prepared by a solution combustion process and a method thereof, which overcomes the deficiencies of the prior art above, and can effectively solve the problem of catalysts prepared by the existing impregnation method being used in 1,4-butynediol When hydrogenation synthesizes 1,4-butanediol, there are problems such as uneven distribution of active substances, low conversion rate of 1,4-butynediol, and poor selectivity of 1,4-butanediol

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