title: Selective transformation of syngas into gasoline-range hydrocarbons over mesoporous H-ZSM-5-supported cobalt nanoparticles.
abstract: Bifunctional Fischer-Tropsch (FT) catalysts that couple uniform-sized Co nanoparticles for CO hydrogenation and mesoporous zeolites for hydrocracking/isomerization reactions were found to be promising for the direct production of gasoline-range (C5-11 ) hydrocarbons from syngas. The Brønsted acidity results in hydrocracking/isomerization of the heavier hydrocarbons formed on Co nanoparticles, while the mesoporosity contributes to suppressing the formation of lighter (C1-4 ) hydrocarbons. The selectivity for C5-11 hydrocarbons could reach about 70 % with a ratio of isoparaffins to n-paraffins of approximately 2.3 over this catalyst, and the former is markedly higher than the maximum value (ca. 45 %) expected from the Anderson-Schulz-Flory distribution. By using n-hexadecane as a model compound, it was clarified that both the acidity and mesoporosity play key roles in controlling the hydrocracking reactions and thus contribute to the improved product selectivity in FT synthesis.
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (China).
authors.forename: Kang
authors.initials: K
authors.lastname: Cheng
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Jincan
authors.initials: J
authors.lastname: Kang
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Peng
authors.forename: Qinghong
authors.initials: Q
authors.lastname: Zhang
authors.forename: Ye
authors.initials: Y
authors.lastname: Wang
mesh_terms: D002384:Catalysis; D003035:Cobalt / Q000737:chemistry*; D006838:Hydrocarbons; D053758:Nanoparticles / Q000737:chemistry*
chemical_list: D006838:Hydrocarbons; D003035:Cobalt
keywords: Fischer-Tropsch synthesis; heterogeneous catalysis; mesoporous materials; nanoparticles; zeolites