Influence of Ni Promotion on Liquid Hydrocarbon Fuel Production over Co/CNT Catalysts

An experimental study of the improved Fischer–Tropsch synthesis was conducted over a series of Ni-promoted Co/CNT catalysts to investigate the influence of Ni content on the synthesis of liquid hydrocarbon fuel (C5–C20). The catalysts were prepared using the impregnation method and were systematically characterized by N2 physisorption studies, X-ray diffraction, transmission electron microscopy, and hydrogen temperature-programmed reduction. The Ni promoter played a significant role in product distribution. The long-chain hydrocarbons were effectively hydrocracked because of the activity of Ni in C–C bond cleavage. A proper degree of Ni promotion could maximize the production of liquid hydrocarbon fuel. The highest selectivity for liquid hydrocarbon fuel (61.6%) and a CO conversion of 92% were obtained over the 20 wt % Co/CNT catalyst promoted by 0.5 wt % Ni.

[1]  A. Khodakov,et al.  Pore Size Effects in Fischer Tropsch Synthesis over Cobalt-Supported Mesoporous Silicas , 2002 .

[2]  T. Arai,et al.  Fischer−Tropsch Synthesis with Cobalt Catalysts Supported on Mesoporous Silica for Efficient Production of Diesel Fuel Fraction , 2003 .

[3]  W. Chu,et al.  Promotion Effects of Platinum and Ruthenium on Carbon Nanotube Supported Cobalt Catalysts for Fischer–Tropsch Synthesis , 2011 .

[4]  Wenping Ma,et al.  Mo−Fe Catalysts Supported on Activated Carbon for Synthesis of Liquid Fuels by the Fischer−Tropsch Process: Effect of Mo Addition on Reducibility, Activity, and Hydrocarbon Selectivity , 2006 .

[5]  D. Goodman,et al.  Fischer-Tropsch synthesis on a model Co/SiO2 catalyst , 2009 .

[6]  C. P. Nicolaides,et al.  Non-sulfided nickel supported on silicated alumina as catalyst for the hydrocracking of n-hexadecane and of iron-based Fischer-Tropsch wax , 2007 .

[7]  Nicolas Abatzoglou,et al.  Co, Ru and K loadings effects on the activity and selectivity of carbon nanotubes supported cobalt catalyst in Fischer–Tropsch synthesis , 2009 .

[8]  Qianqian Yin,et al.  Effects of Preparation Method on the Performance of Ni/Al2O3 Catalysts for Hydrogen Production by Bio-Oil Steam Reforming , 2012, Applied Biochemistry and Biotechnology.

[9]  G. V. D. Laan,et al.  Kinetics and Selectivity of the Fischer–Tropsch Synthesis: A Literature Review , 1999 .

[10]  J. Goodwin,et al.  Passivation of a Co–Ru/γ-Al2O3 Fischer–Tropsch catalyst , 2002 .

[11]  Y. Mortazavi,et al.  Fischer–Tropsch synthesis over cobalt dispersed on carbon nanotubes-based supports and activated carbon , 2009 .

[12]  Cyril Knottenbelt,et al.  Mossgas “gas-to-liquid” diesel fuels—an environmentally friendly option , 2002 .

[13]  Tiejun Wang,et al.  Effect of Ru addition to Co/SiO2/HZSM-5 catalysts on Fischer-Tropsch synthesis of gasoline-range hydrocarbons , 2009 .

[14]  S. Al-Khowaiter,et al.  Low temperature hydrocracking of hydrocarbons on Ni-supported catalysts , 1999 .

[15]  M. Yamada,et al.  Activation and Catalytic Behavior of Several Co/SiO2 Catalysts for Fischer−Tropsch Synthesis , 2003 .

[16]  K. Fujimoto,et al.  Different functions of the noble metals added to cobalt catalysts for Fischer-Tropsch synthesis , 2001 .

[17]  F. Tao,et al.  Synthesis and catalysis of location-specific cobalt nanoparticles supported by multiwall carbon nanotubes for Fischer-Tropsch synthesis. , 2012, Langmuir : the ACS journal of surfaces and colloids.

[18]  A. Dalai,et al.  Iron catalyst supported on carbon nanotubes for Fischer–Tropsch synthesis: Effects of Mo promotion , 2011 .

[19]  Zhenhua Li,et al.  Thermal decomposition and cobalt species transformation of carbon nanotubes supported cobalt catalyst for Fischer-Tropsch synthesis , 2012 .

[20]  E. Bartolomeo,et al.  Co and Ni supported on CeO2 as selective bimetallic catalyst for dry reforming of methane , 2012 .

[21]  Kyoung‐Su Ha,et al.  Ru promoted cobalt catalyst on γ-Al2O3 support: Influence of pre-synthesized nanoparticles on Fischer–Tropsch reaction , 2011 .

[22]  Yongqing Zhang,et al.  Fischer–Tropsch synthesis: support, loading, and promoter effects on the reducibility of cobalt catalysts , 2002 .

[23]  A. Dalai,et al.  Effect of pre-treatment on physico-chemical properties and stability of carbon nanotubes supported iron Fischer-Tropsch catalysts , 2009 .

[24]  Neil J. Coville,et al.  Correlating the preparation and performance of cobalt catalysts supported on carbon nanotubes and carbon spheres in the Fischer–Tropsch synthesis , 2011 .

[25]  Ajay K. Dalai,et al.  Fischer–Tropsch synthesis over cobalt catalyst supported on carbon nanotubes in a slurry reactor , 2008 .

[26]  Xinbin Ma,et al.  Hydrogenation of carbon monoxide over cobalt nanoparticles supported on carbon nanotubes , 2011 .

[27]  Nianjun Luo,et al.  Hydrogen generation from liquid reforming of glycerin over Ni-Co bimetallic catalyst. , 2010 .

[28]  S. Reyes,et al.  Transport-enhanced α-olefin readsorption pathways in Ru-catalyzed hydrocarbon synthesis , 1991 .

[29]  A. Mirzaei,et al.  Development of a kinetic model for Fischer–Tropsch synthesis over Co/Ni/Al2O3 catalyst , 2012 .

[30]  M. Montes,et al.  Use of different mesostructured materials based on silica as cobalt supports for the Fischer–Tropsch synthesis , 2009 .

[31]  P. Sánchez,et al.  Influence of the catalytic support on the industrial Fischer–Tropsch synthetic diesel production , 2011 .

[32]  Kyoung‐Su Ha,et al.  Development of a kinetic model of the Fischer–Tropsch synthesis reaction with a cobalt-based catalyst , 2011 .

[33]  A. Dalai,et al.  Fischer–Tropsch synthesis over carbon nanotubes supported cobalt catalysts in a fixed bed reactor: Influence of acid treatment , 2009 .

[34]  D. Serrano,et al.  Conversion of Polyethylene into Transportation Fuels by the Combination of Thermal Cracking and Catalytic Hydroreforming over Ni-Supported Hierarchical Beta Zeolite , 2012 .