Nickel-additive-aluminum oxide-zirconium oxide catalyst, preparation method and application

Abstract

The invention relates to a nickel-additive-aluminum oxide-zirconium oxide catalyst which comprises aluminum oxide, zirconium oxide, nickel and additive at mass ratio of 100:(10.5-18.8): (12-21.3):(0.5-1.8). The pore volume of the catalyst is 0.4mL / g-0.6mL / g; the specific surface area is 120m<2> / g-180m<2> / g; the pore with the pore diameter within 30nm-45nm is 25%-35% of the total pore volume fraction; the pore with the pore diameter within 7nm-12.5nm is 20%-25% of the total pore volume fraction. The nickel-additive-aluminum oxide-zirconium oxide catalyst has the advantages of high stability and long service life.

Description

technical field

[0001] The invention relates to a nickel-promoter-alumina-zirconia catalyst as well as a preparation method and application. Background technique

[0002] Synthesize 1,4-butynediol with formaldehyde and acetylene as raw materials, and finally obtain 1,4-butanediol product after hydrogenation. The chemical reactions involved in this process are not only the process of hydrogenation of C≡C in 1,4-butynediol to obtain 1,4-butanediol, but also unsaturated by-products, such as 1,4-butanediol Chemical reaction for further hydrogenation conversion of enediol, 4-hydroxybutyraldehyde and other aldehyde species. Usually a fixed bed reactor is used, with supported nickel as the hydrogenation catalyst.

[0003] US patents US 3950441 and US 3759845 disclose silicon-containing γ-Al 2 o 3 Support Ni-Cu-Mn catalyst. Chinese patent CN 1081174A reports the Al 2 o 3 The supported nickel catalyst is used in fixed bed high pressure hydrogenation reaction. These catalysts ...

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