Citation:
ZHANG Hai-yong, WANG Yong-gang, ZHANG Pei-zhong, LIN Xiong-chao, ZHU Yu-fei. Preparation of NiW catalysts with alumina and zeolite Y for hydroprocessing of coal tar[J]. Journal of Fuel Chemistry and Technology,
;2013, 41(9): 1085-1091.
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γ-alumina supported Ni-W catalysts with different zeolite Y contents were prepared and characterized by N2 sorption, XRD, H2-TPR and NH3-TPD. Their catalytic activities were investigated on a trickle bed reactor by hydroprocessing cresol-naphthalene model compounds in n-heptane solution. The results show that all the catalysts exhibit excellent hydrodeoxygenation and hydrogenation activities, while the isomerization and ring-opening products increase with the addition of zeolite, and trans-decalin is preferred with acid sites. A better catalyst was selected for hydroprocessing a low temperature coal tar fraction and the product oil was analyzed by GC-MS and elementary analysis. Phenols and di-aromatics in the tar are almost converted into indans, cycloalkanes and hydro-aromatics. In the meantime, heteroatoms, especially S and O atoms, reduce remarkably.
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Keywords:
- low temperature coal tar,
- hydroprocessing,
- catalyst,
- zeolite
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