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The individual and combined effects of phosphorus, EDTA and support modification on hydrotreating of bitumen derived heavy gas oil were studied. The EDTA/Ni molar ratio was varied from 0.5 to 2 for optimization and studying the effect of EDTA on activity of mesoporous alumina supported NiMo catalyst. The phosphorus was impregnated using two different methods: modified co-impregnation (MCI) and sequential...
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