초록 ▼

Supported hydroprocessing catalysts comprising a sulfide of trivalent chromium and molybdenum or tungsten which optionally may contain one or more promotor metals such as Co, Fe, Ni and mixture thereof. These catalysts are obtained by comprising a preselected quantity of support material with a prec

Supported hydroprocessing catalysts comprising a sulfide of trivalent chromium and molybdenum or tungsten which optionally may contain one or more promotor metals such as Co, Fe, Ni and mixture thereof. These catalysts are obtained by comprising a preselected quantity of support material with a precursor salt containing a tetrathiometallate anion of Mo or W and a cation comprising trivalent chromium and, optionally, one or more promoter metals wherein both said trivalent chromium and promoter metal are chelated by at least one neutral, nitrogen-containing polydentate ligand and heating the composite in the presence of sulfur and hydrogen in an oxygen-free atmosphere. These catalysts have high selectivity for nitrogen removal. The chromium and promoter metal do not have to be in the same cation.

대표청구항 ▼

A process for hydrotreating a hydrocarbon feed which comprises contacting said feed at a temperature of at least about 150°C. and in the presence of hydrogen with a catalyst obtained by compositing a quantity of inorganic refractory oxide support material with one or more precursor salts and heating

A process for hydrotreating a hydrocarbon feed which comprises contacting said feed at a temperature of at least about 150°C. and in the presence of hydrogen with a catalyst obtained by compositing a quantity of inorganic refractory oxide support material with one or more precursor salts and heating said composite at elevated temperature of at least about 150°C., in the presence of excess sulfur in the form of one or more sulfur-bearing compounds and under oxygen-free conditions for a time sufficient to form said catalyst, wherein said precursor salt contains a tetrathiometallate anion of Mo, W or mixture thereof and a cation comprising trivalent chromium or a mixture of trivalent chromium with one or more divalent promoter metals selected from the group consisting of Fe, Ni, Co, Mn, Zn, and Cu wherein said trivalent chromium and divalent promoter metals are chelated by at least one neutral, nitrogen-containing polydentate ligand, L, said contacting occurring for a time sufficient to hydrotreat at least a portion of said feed.