| 摘要 |
<p>Hydrocarbon feeds are upgraded by contacting same, at elevated temperature and in the presence of hydrogen, with a self-promoted catalyst prepared by heating one or more water soluble catalyst precursors in a non-oxidizing atmosphere in the presence of sulfur at a temperature of at least about 200 DEG C. The precursors will be one or more compounds of the formula ML(MoyWl-yO4) wherein M is one or more promoter metals selected essentially from Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof; wherein O</=y</=l; and wherein L is a nitrogen containing, neutral multidentate, cheating ligand. In a preferred embodiment the ligand L will comprise one or more chelating alkyl di or triamines and the non-oxidizing atmosphere and to form the catalyst will comprise H2S.</p> |
