Biofuels production from hydrotreating of vegetable oil using supported noble metals, and transition metal carbide and nitride

Abstract

<lb>BIOFUELS PRODUCTION FROM HYDROTREATING OF VEGETABLE OIL USING<lb>SUPPORTED NOBLE METALS, AND TRANSITION METAL CARBIDE AND NITRIDE<lb>by<lb>HUALI WANG<lb>May 2012<lb>Advisors: Dr. K. Y. Simon Ng and Dr. Steven O. Salley<lb>Major: Chemical Engineering<lb>Degree: Doctor of Philosophy<lb>The focus of this research is to prepare non-sulfided hydrotreating catalysts, supported<lb>noble metal and transition metal carbide/ nitride, and evaluate their hydrocracking activities and<lb>selectivities by using soybean oil as the feedstock. For comparison study, catalytic cracking of<lb>soybean oil over a commercialized ZSM-5 was investigated. However, steady state could not be<lb>reached because significant amounts of tar and coke were generated during the reaction though a<lb>high yield (21%) of jet fuel was obtained from the process. Compared to the catalytic cracking<lb>process, less tar and coke were formed during the hydrocracking process and stable continuous flow<lb>reaction was obtained by using the bifunctional Ru/ZSM-5 catalyst. 16% yield of jet fuel, which is<lb>comparable to yields over commercialized sulfided NiMo catalysts while at a much lower pressure<lb>of 650 psi was produced. A 20 29% diesel yield was also obtained during the process. But coke<lb>was the issue with this noble metal catalyst.<lb>In the following stage, novel bi-functional catalysts, NiMo carbide or nitride supported on<lb>ZSM-5, zeolite β, USY, γ-alumina oxide, and Al-SBA-15 were prepared by the temperature-<lb>programmed reaction method and the effects of process parameters on catalytic hydrocracking of<lb>soybean oil were investigated. 100% conversion of soybean oil was attained under the 650 psi and

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Cite this paper

@inproceedings{Wang2016BiofuelsPF, title={Biofuels production from hydrotreating of vegetable oil using supported noble metals, and transition metal carbide and nitride}, author={Huali Wang}, year={2016} }