Chevron U.s.a. Inc.

Bi-Zeng Zhang

Alexander E Kuperman

Theodorus Ludovicus Michael Maesen

Andrew Rainis

Christopher J Dillon

A catalyst precursor composition and methods for making such catalyst precursor are disclosed. The catalyst precursor comprises at least a Promoter metal selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, at least one Group VIB metal, at least one organic, oxygen-containing ligand, and a cellulose-containing material. Catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds. In one embodiment, the sulfidation is carried out by contacting the catalyst precursor with hydrogen and a sulfur containing compound, wherein the contacting is carried out ex-situ. Catalysts prepared from such catalyst precursors have a fouling rate of less than 8&#xb0; F. (4.4&#xb0; C.) per 1000 hour.

Hydroconversion processes employing multi-metallic catalysts and method for making thereof

A catalyst precursor composition and methods for making such a catalyst precursor are disclosed. The catalyst precursor comprises at least a promoter metal selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, having an oxidation state of +2 or +4, at least one Group VIB metal, at least one organic, oxygen-containing ligand, and a cellulose-containing material. In one embodiment, the catalyst precursor is of the formula A[(M) (OH)(L)](MO), wherein A is one or more monovalent cationic species, Mis selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, L is one or more oxygen-containing ligands, Mis at least a Group VIB metal, M:Mhas an atomic ratio between 100:1 and 1:100. In one embodiment, catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds. In a hydroconversion process at a hydrogen partial pressure of &#x2dc;450 psig, the catalyst a 700&#xb0; F.+ conversion rate of at least 50% of the 700&#xb0; F.+ conversion results gives obtained under comparable conditions and with a hydrogen partial pressure of 600 psig.

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Albany, CA, United States of America

Bi-Zeng Zhang