Important Dates

Submission Deadline

February 20, 2019

January 3, 2019

Registration Deadline

March 1, 2019

Conference Dates

March 8-10, 2019


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Welcome Prof. Zhenyi Du, Taiyuan University of Technology, China to be the Keynote Speaker!

Zhenyi Du, Taiyuan University of Technology, China

Speech Title: Catalytic conversion of biomass gasification tar over char-based catalysts

Abstract: In this presentation, some of our recent work on tar conversion over char based catalysts will be introduced. A series of biochar supported Ni catalysts (Ni/BC) were explored for steam reforming of toluene, with an emphasis on the effects of Ni particle size on the product distribution and catalytic stability. Metallic Ni nanoparticles were formed upon pyrolysis treatment of impregnated biomass via carbothermal reduction. The influence of preparation parameters (Ni loading amount and pyrolysis temperature) on the Ni particle size was examined. Ni/BC pyrolyzed at 600 oC with a Ni loading of 5% (5Ni-600/BC) displayed higher specific surface areas and higher metal dispersion (i.e. lower particle size) than other catalysts. In addition, 5Ni-600/BC showed superior catalytic performance in terms of initial activity (TOF) and stability over other Ni/BC catalysts, indicating the positive role of small particles with more corner and edge sites. Two conventional metal oxides supported Ni catalysts (Ni/ZrO2 and Ni/γ-Al2O3) were selected for comparison with 5Ni-600/BC in long-term stability tests. Although characterization of the spent catalysts revealed that 5Ni-600/BC experienced severe coke deposition and metal sintering, it performed more stable than the reference catalysts, which can be attributed to its significantly larger specific surface area available for coke tolerance. 5Ni-600/BC was further examined for its performance in steam reforming of real biomass tar. Compared with BC alone, Ni/BC not only reduced the overall amount of tar, but also cracked some large molecules into smaller ones.