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The hydrotreating (HT) of Maya crude oil was carried out in a Parr batch reactor, using alumina-supported catalysts based on NiMo sulfides, carbides and nitrides, which were synthesized by temperature programmed reaction of the oxidic precursors. The catalysts were characterized by X-ray diffraction, N 2 physisorption, scanning- and high resolution transmission-electron microscopy. Next, catalysts...
Synthesis of bulk and alumina-supported, Fe-promoted W carbides and nitrides were carried out by using oxidic precursors with atomic ratios (Fe/(Fe+W)) varying from 0 to 1. These materials were prepared by temperature-programmed reaction up to 700°C of the precursors under flow of 20vol.% CH 4 /H 2 , for carbides, and of NH 3 for nitrides. Crystalline structure of catalysts...
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