Chevron U.s.a. Inc.

Christopher J Dillon

Alexander E Kuperman

Theodorus Maesen

Theodorus Ludovicus Michael Maesen

Bi-Zeng Zhan

Andrew Rainis

Horacio Trevino

Bi-Zeng Zhang

Darren Fong

Dennis J O'REAR

This invention is directed to hydrodemetallization catalysts and hydrodemetallization processes employing a magnesium aluminosilicate clay. The magnesium aluminosilicate clay has a characteristicSi NMR spectrum. The magnesium aluminosilicate clay is the product of a series of specific reaction steps. Briefly, the magnesium aluminosilicate clay employed in the catalyst and process of the invention is made by combining a silicon component, an aluminum component, and a magnesium component, under aqueous conditions and at an acidic pH, to form a first reaction mixture and subsequently the pH of the first reaction mixture is adjusted to greater than about 7.5 to form a second reaction mixture. The second reaction mixture is allowed to react under conditions sufficient to form the magnesium aluminosilicate clay. The resulting magnesium aluminosilicate clay combines high surface area and activity for use in hydrodemetallization catalysts and processes.

Hydrodemetallization catalyst and process

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

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Manhattan Beach, CA, United States of America

Christopher J Dillon