초록 ▼

Catalysts comprising a carbon-containing sulfide of molybdenum or tungsten are prepared by contacting, in the presence of sulfur, hydrogen and a hydrocarbon, ammonia and ammonium substituted molybdate, thiomolybdate, tungstate and thiotungstate salts at a temperature of from about 200°-600°C. These

Catalysts comprising a carbon-containing sulfide of molybdenum or tungsten are prepared by contacting, in the presence of sulfur, hydrogen and a hydrocarbon, ammonia and ammonium substituted molybdate, thiomolybdate, tungstate and thiotungstate salts at a temperature of from about 200°-600°C. These catalysts are useful for hydrotreating reactions. In a preferred embodiment, these catalysts will be promoted with certain transition metal sulfides, such as cobalt sulfide, which results in catalysts having greater activity than conventional catalysts such as cobaltmolybdate on alumina.

대표청구항 ▼

A process for forming a carbon-containing, poorly crystalline metal sulfide catalyst which comprises contacting one or more catalyst precursor salts, in the presence of sulfur and hydrogen and at elevated temperature, with a hydrocarbon for a time sufficient to form said catalyst wherein said precur

A process for forming a carbon-containing, poorly crystalline metal sulfide catalyst which comprises contacting one or more catalyst precursor salts, in the presence of sulfur and hydrogen and at elevated temperature, with a hydrocarbon for a time sufficient to form said catalyst wherein said precursor salt has the formula Bx[MOyS4-y]wherein x is 1 or 2 and y is any value between 0 and 4, wherein M is Mo or W and wherein B is (a) an ammonium ion, or (b) an alkyl or aryl ion wherein said ion may contain from 1-4 alkyl or aryl groups.