公开(公告)号：BR8802711A

公开(公告)日：1988-12-27

申请号：BR8802711

申请日：1988-06-03

Applicant: DEGUSSA

Inventor： KISS AKOS ,  KLEINSCHMITT PETER ,  HANICH JURGEN ,  HALBRITTER GUENTER ,  HORST JENNY

IPC: C09C3/06 ,  C09C1/00 ,  C09C1/40 ,  C09C1/42

Abstract: Encapsulation pigments comprising chromophoric particles embedded in glaze-stable casings are prepared by means of calcination from the appropriate initial products. High yields and strong color intensities are obtained if the chromophoric substance or its initial compounds are bound in and/or to a zeolite and are calcined in this form with the remaining constituents.

公开(公告)号：DD290816A5

公开(公告)日：1991-06-13

申请号：DD33555889

申请日：1989-12-12

Applicant: DEGUSSA

Inventor： BAACKE MICHAEL ,  BRAND REINHOLD ,  ENGLER BERND ,  KISS AKOS ,  KLEINE-MOELLHOFF PETER ,  KLEINSCHMITT PETER ,  KOBERSTEIN EDGAR ,  SIRAY MUSTAFA

IPC: B01D53/86 ,  B01D53/56 ,  B01D53/94 ,  B01J29/18 ,  B01J29/20 ,  B01J29/24 ,  B01J29/26 ,  B01D53/34 ,  B01J29/04

Abstract: A zeolite catalyst and a method for reduction of nitrogen oxides present in waste gas streams is described. The method includes mixing the waste gas containing nitrogen oxides with ammonia. At an elevated temperature, this mixture is passed over a zeolite catalyst. Preferably, the zeolite catalyst is in a monolithic or honeycomb form. The zeolite catalyst includes one or more of the following subgroup metals: copper, iron, molybdeum and cerium. The zeolite catalysts made in accordance with this invention show better conversion of nitrogen oxides and longer life than known catalysts.

公开(公告)号：DD293799A5

公开(公告)日：1991-09-12

申请号：DD33984490

申请日：1990-04-18

Applicant: DEGUSSA

Inventor： SETL GERHARD ,  SWAROWSKY HERBERT ,  KOERFER MARTIN ,  KLEINSCHMITT PETER ,  SCHWARZ RUDOLF

IPC: C01F7/30