title: Nickel-promoted tungsten carbide catalysts for cellulose conversion: effect of preparation methods.
abstract: A series of Ni-promoted W(2) C catalysts was prepared by means of a post-impregnation method and evaluated for the catalytic conversion of cellulose into ethylene glycol (EG). Quite different from our previously reported Ni-W(2) C/AC catalysts, which were prepared by using the co-impregnation method, the introduction of Ni by the post-impregnation method did not cause catalyst sintering, but resulted in redispersion of the W component, which was identified and characterized by means of XRD, TEM, and CO chemisorption. The highly dispersed Ni-promoted W(2) C catalyst was very active and selective in cellulose conversion into EG, with a 100% conversion of cellulose and a 73.0% yield in EG. The underlying reason for the enhanced catalytic performance was most probably the significantly higher dispersion of active sites on the catalyst.
authors.affiliation: State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, Dalian 116023, PR China.
authors.forename: Na
authors.initials: N
authors.lastname: Ji
authors.forename: Mingyuan
authors.initials: M
authors.lastname: Zheng
authors.forename: Aiqin
authors.initials: A
authors.lastname: Wang
authors.forename: Tao
authors.initials: T
authors.lastname: Zhang
authors.forename: Jingguang G
authors.initials: JG
authors.lastname: Chen
mesh_terms: D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D017973:Tungsten Compounds / Q000737:chemistry*
chemical_list: D017973:Tungsten Compounds; C002802:tungsten carbide; D009532:Nickel; D002482:Cellulose