Patent Number: 6,168,775

Title: Catalyst and process for direct catalystic production of hydrogen peroxide, (H2O2)

Abstract: A particulate supported noble metal phase-controlled catalyst material having 5-1000 .mu.m surface area of m.sup.2 /gm is provided for use in direct catalytic production of hydrogen peroxide (H.sub.2 O.sub.2) product from hydrogen and oxygen-containing feedstreams. The catalyst is made by depositing phase controlled crystals of a noble metal such as palladium on a suitable particulate support material such as carbon black, by utilizing a precursor solution of the metal and a suitable control ionic polymer having molecular weight of 300-8000 such as sodium polyacrylate in a selected metal to polymer molar ratio of 1:0.1 to 1:10, which procedure provides desired phase control of the noble metal atoms to form widely dispersed minute noble metal crystals on the support material. The invention includes methods for making the catalyst, and also a process for utilizing the catalyst to directly produce high yields of hydrogen peroxide (H.sub.2 O.sub.2) product from hydrogen and oxygen-containing gaseous feedstreams.

Inventors: Zhou; Bing (Plainsboro, NJ), Lee; Lap-Keung (Cranbury, NJ)

Assignee: Hydrocarbon Technologies, Inc.

International Classification: B01J 23/38 (20060101); B01J 23/40 (20060101); B01J 21/18 (20060101); B01J 21/00 (20060101); B01J 37/00 (20060101); B01J 37/02 (20060101); B01J 35/00 (20060101); C01B 15/00 (20060101); C01B 15/029 (20060101); B01J 021/18 (); B01J 023/38 (); B01J 023/40 (); B01J 023/44 (); C01B 015/01 ()

Expiration Date: 01/02/2018