Research Triangle Institute

Jason S Norman

Brian Scott Turk

Jian-ping Shen

Marty Lail

Paul David Mobley

Jonathan Peters

Laura Douglas

Jian-Ping Shen

Raghubir Prasad Gupta

Brian S Turk

Zinc oxide-based sorbents, and processes for preparing and using them are provided, wherein the sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents contain an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two-phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAlO) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 50 nm (500 Angstroms). Preferably the sorbents are prepared by using an alkali metal base to convert a precursor mixture, containing a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component, with the resulting sorbent having a sodium level within a desired range.

Zinc oxide based sorbent and process for preparing same

This invention is directed to novel mixed transition metal iron (II/III) catalysts for the extraction of oxygen from COand the selective reaction with organic compounds.

Mixed metal iron oxides and uses thereof

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Chapel Hill, NC, United States of America

Jason S Norman