Novel Ni2P catalysts supported on zeolite were prepared and applied for tar-oil hydrocracking to maximize the BTX yield. Since the tar-oil derived from coal contains heterocyclic compounds like nitrogen, oxygen, sulfur compounds must be pre-treated to remove the heterocyclic compounds that can act as a catalytic poison. Pre-hydrotreating followed by hydro-cracking was thus adopted to convert tar-oil into BTX. As for the pre-hydrotreatment at different LHSV's with time on stream over the Ni2P/SiO2 catalysts, tetralin fraction increased from 31% to 40 % according to the increase of LHSV's. In contrast, decalin fraction decreased from 10% to 1%. The following hydrocracking of pre-hydrotreated tar-oil was conducted at 3.0MPa, 623K and 648K with varying LHSV's 1.0�3.0hr-1 in a ?xed bed reactor over Ni2P/zeolite catalysts, resulting in high selectivity of BTX by 61% at 648K. These results thus demonstrate that Ni2P/zeolite catalysts significantly promote the hydrocracking of tar-oil.

Activity and structure of Ni<sub>2</sub>P catalysts in hydroconversion of polyaromatic hydrocarbons

247th National Meeting (2014)

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Activity and structure of Ni2P catalysts in hydroconversion of polyaromatic hydrocarbons

Activity and structure of Ni₂P catalysts in hydroconversion of polyaromatic hydrocarbons