公开(公告)号：MY131186A

公开(公告)日：2007-07-31

申请号：MYPI9200304

申请日：1992-02-25

Applicant: DEGUSSA ,  HENKEL KGAA

Inventor： SCHAFER-SINDLINGER ADOLF DR ,  ARNTZ DIETRICH DR

IPC: B01J21/06 ,  B01J23/44 ,  C07B61/00 ,  C07C51/36 ,  C07C53/126 ,  C11C3/12

Abstract: A CATALYST FOR HARDENING UNSATURATED FATTY ACIDS OBTAINED FROM THE DECOMPOSITION OF FAT IS DESCRIBED, CONSISTING OF AN INTIMATE MIXTURE OF TITANIUM OXIDE AND FINELY DIVIDED PALLADIUM METAL AND CHARACTERISED IN THAT THE TITANIUM OXIDE IS SO-CALLED PYROGENIC TITANIUM OXIDE OBTAINED FROM TITANIUM TETRACHLORIDE BY FLAME HYDROLYSIS.

公开(公告)号：CZ20011396A3

公开(公告)日：2002-04-17

申请号：CZ20011396

申请日：2001-04-19

Applicant: DMC DEGUSSA METALS CATALYSTS C

Inventor： SCHAFER-SINDLINGER ADOLF DR ,  PFEIFER MARCUS DR ,  SPURK PAUL DR ,  DEMEL YVONNE ,  KREUZER THOMAS DR ,  LOX EGBERT DR

IPC: F01N3/08 ,  B01D53/34 ,  B01D53/56 ,  B01D53/74 ,  B01D53/86 ,  B01D53/94 ,  B01J8/02 ,  B01J21/00 ,  B01J23/80 ,  B01J29/06 ,  B01J29/064 ,  B01J29/072 ,  B01J29/076 ,  B01J29/46 ,  B01J35/04 ,  B01J37/02 ,  B01J37/30 ,  C01B21/00 ,  C01B21/04 ,  F01N3/10 ,  F01N3/20 ,  F01N3/28

Abstract: Process for reducing nitrogen oxides contained in a lean exhaust gas of an IC engine comprises selectively reducing the nitrogen oxides using ammonia on a reduction catalyst containing a zeolite exchanged with transition metals. A part of the nitrogen monoxide is reduced to nitrogen dioxide before the gas is fed together with the ammonia over a reduction catalyst. Oxidation of the nitrogen monoxide is carried out so that the exhaust gas contains 30-70 vol.% nitrogen dioxide before contact with the reduction catalyst. An Independent claim is also included or the process for the production of a reduction catalyst comprising forming an iron-exchanged zeolite, suspending with zirconyl nitrate in water, applying as a coating to a honeycomb body, and calcining the coating.

公开(公告)号：BR9203789A

公开(公告)日：1993-04-27

申请号：BR9203789

申请日：1992-09-29

Applicant: DEGUSSA

Inventor： ARNTZ DIETRICH DR ,  HAAS THOMAS DR ,  SCHAFER-SINDLINGER ADOLF DR

IPC: B01J23/42 ,  C07B61/00 ,  C07C29/141 ,  C07C31/20 ,  C07C29/17 ,  C07C31/10 ,  B01J21/06

Abstract: Process for the preparation of 1,3-propanediol by hydrogenation of hydroxypropionaldehyde (HPA) in aqueous solution on a shaped supported catalyst in a solid bed, the concentration of the HPA in the solution being 5 to 100% by weight, and the hydrogenation being carried out at temperatures from 30 to 180 DEG C and hydrogen pressures from 5 to 300 bar and at a pH between 2.5 and 6.5, characterised in that the supported catalyst consists of titanium oxide, on which platinum is present in finely divided form in an amount relative to the support of 0.1 to 5.0% by weight.