Patent ID: 9233367
Filing Date: 2016-01-12
CPC Classification: B01J,C01G

Claim Text:
1. A process for preparing a catalyst, comprising drying a precipitated catalyst precursor containing at least molybdenum and sulfur such that it contains from 12 to 15 weight percent water; simultaneously with or subsequently to drying, accomplishing passivation of the precipitated catalyst precursor by exposing it to air, an inert atmosphere, or a combination thereof under conditions suitable to form a passivated particulate catalyst precursor, passivation being defined to mean that the particulate catalyst precursor does not self-heat to more than 100° C. if exposed to air; and then thermally auto-reducing the passivated particulate catalyst precursor at a temperature ranging from 350° C. to 550° C. to form a catalyst.