The Research On Synthesis Of Cu/SiO₂ Catalyst With Mesoporous And Performance Of 2-butanol Dehydrogenation

Methyl ethyl ketone?MEK?is an excellent chemical product with wide application.It is mainly used as a solvent in the production of coatings,adhesives,etc.2-butyl alcohol dehydrogenation is the main technology of the preparation of methyl ethyl ketone recently.Cu/Zn and Cu/Al are the common catalysts of industrialization for 2-butyl alcohol dehydrogenation,but the research of pollution free Cu/SiO₂ catalyst with mesoporous has rarely been reported.Utilizing hydrolysis precipitation method,our group successfully synthesized the Cu/SiO₂ catalyst with mesoporous,which has a high copper loading,highly dispersed copper species and a strong metal-support interaction and own copper phyllosilicate as precursor.Using FTIR,XRD,BET,TPR made a characterization analysis,this paper examines the influence of the calcination temperature,pH value and addition of Zn as additives for the preparation of mesoporous Cu/SiO₂ catalyst systems as well as for its catalytic performance.Utilizing hydrolysis precipitation method,our group successfully synthesized the Cu/SiO₂ catalyst with mesoporous.It is firstly induced that the physical and chemical properties of Cu/SiO₂ catalyst with mesoporous synthesized by hydrolysis precipitation method.pH value is one of factors during the catalyst preparation process.With the pH value changing,the precursor composition and pore structure will change.So we designed the synthesized experiment to observe the change of the physical and chemical structure of the catalytic material in different pH values,and use butanol dehydrogenation to methyl ethyl ketone reaction as a probe,which investigates the impact of pH value for pre-synthesis and catalytic properties of the mesoporous Cu/SiO₂ catalyst synthesized by hydrolysis precipitation method.This paper examines the effect of calcination temperature on the physical and chemical structure of the catalyst and the effect on the catalytic dehydrogenation of butanol.This study attempts to introduce Zn as an additive to improve the stability of the mesoporous Cu/SiO₂ catalyst.Through analysis and discussion of the changes in the physical and chemical structure of the catalyst and the effect of butanol dehydrogenation reactions after adding Zn,it is observed the effect of Zn as an additive for improving the mesoporous Cu/SiO₂ catalyst stability.In addition to,we also investigated the effects of different calcination temperature for the physical and chemical structure and catalytic properties of Cu/Zn/SiO₂ catalyst.