초록 ▼

Supported, hydroprocessing catalysts comprising a sulfide of (i) trivalent chromium, (ii) Mo, W or mixture thereof and (iii) at least one metal selected from the group consisting of Ni, Co, Mn, Cu, Zn and mixture thereof and mixture thereof with Fe. These catalysts are made by compositing a preselec

Supported, hydroprocessing catalysts comprising a sulfide of (i) trivalent chromium, (ii) Mo, W or mixture thereof and (iii) at least one metal selected from the group consisting of Ni, Co, Mn, Cu, Zn and mixture thereof and mixture thereof with Fe. These catalysts are made by compositing a preselected quantity of support material with a precursor comprising a mixture of (i) hydrated oxide of trivalent chromium and (ii) a salt containing a thiometallate anion of Mo or W and a cation comprising at least one divalent promoter metal 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 been found to be useful hydrotreating catalysts having nitrogen removal activity superior to that of commercial catalysts such as sulfided cobalt-molybdate on alumina.

대표청구항 ▼

A process for improving the oxidation stability of a nitrogen and sulfur containing lube oil feed which comprises contacting said feed at an elevated temperature of at least about 150°C. and in the presence of hydrogen with a catalyst comprising a support mixture of a sulfide of (i) trivalent chromi

A process for improving the oxidation stability of a nitrogen and sulfur containing lube oil feed which comprises contacting said feed at an elevated temperature of at least about 150°C. and in the presence of hydrogen with a catalyst comprising a support mixture of a sulfide of (i) trivalent chromium, (ii) Mo, W or mixture thereof and (iii) at least one promoter metal selected from the group consisting of Ni, Co, Mn, Cu, Zn and mixture thereof and mixture thereof with Fe wherein said catalyst has been prepared by compositing a pre-selected quantity of inorganic refractory oxide support material with (a) a hydrated oxide of trivalent chromium and (b) one or more catalyst precursor salts containing a thiometallate anion of Mo, W or mixture thereof and a cation containing at least one of said promoter metals wherein said promoter metal in said cation is divalent and is chelated by at least one neutral, nitrogen-containing polydentate ligand and heating said composite at elevated temperature, in the presence of sulfur or sulfur bearing compound and under oxygen-free conditions for a time sufficient to form said catalyst, said contacting of said feed with said catalyst occurring for a time sufficient to improve the oxidation stability of said oil.