公开(公告)号：AU1904188A

公开(公告)日：1989-01-19

申请号：AU1904188

申请日：1988-07-14

Applicant: DEGUSSA

Inventor： WITZEL MICHAEL DR ,  KLEINSCHMIT PETER DR ,  PFEIFER WOLF-DIETER DR ,  VOIGT CARL DR ,  ALBERS PETER DR

IPC: B01J23/40 ,  C01C3/02 ,  B01J23/42

Abstract: A specific form of surface coating of Al2O3 catalysts, using additional amounts of aluminium ions and minimum amounts of platinum ions, made it possible to use Al2O3 as a catalyst for long-term operation (150 days and more) in the preparation of hydrogen cyanide from hydrocarbons and ammonia, preferably in the BMA process.

公开(公告)号：DE59000619D1

公开(公告)日：1993-02-04

申请号：DE59000619

申请日：1990-01-26

Applicant: DEGUSSA

Inventor： DESCHLER ULRICH DR ,  LECHNER ULRIKE DR ,  WITZEL MICHAEL DR

IPC: C04B41/00 ,  A01N55/00 ,  A01N55/04 ,  B27K3/50 ,  C04B41/49 ,  C04B41/52 ,  C04B41/64 ,  C07F7/18 ,  C09D4/00 ,  C09D183/04 ,  C09K3/18

Abstract: The invention relates to mixtures containing organosilicon compounds and to their use for the waterproofing and antimicrobial impregnation of brick, masonry and concrete. … The organosilicon compounds are alkyltrialkoxysilanes and cationic trialkoxysilanes.

公开(公告)号：AT73111T

公开(公告)日：1992-03-15

申请号：AT88108299

申请日：1988-05-25

Applicant: DEGUSSA

Inventor： WITZEL MICHAEL DR ,  KLEINSCHMIT PETER DR ,  PFEIFER WOLF-DIETER DR ,  VOIGT CARL DR ,  ALBERS PETER DR

IPC: B01J23/40 ,  C01C3/02

公开(公告)号：DK0385108T3

公开(公告)日：1993-02-01

申请号：DK90101543

申请日：1990-01-26

Applicant: DEGUSSA

Inventor： LECHNER ULRIKE DR ,  DESCHLER ULRICH DR ,  WITZEL MICHAEL DR

IPC: C04B41/00 ,  A01N55/00 ,  A01N55/04 ,  B27K3/50 ,  C04B41/49 ,  C04B41/52 ,  C04B41/64 ,  C07F7/18 ,  C09D4/00 ,  C09D183/04 ,  C09K3/18

Abstract: The invention relates to mixtures containing organosilicon compounds and to their use for the waterproofing and antimicrobial impregnation of brick, masonry and concrete. … The organosilicon compounds are alkyltrialkoxysilanes and cationic trialkoxysilanes.

公开(公告)号：DE3900303A1

公开(公告)日：1990-07-12

申请号：DE3900303

申请日：1989-01-07

Applicant: DEGUSSA

Inventor： LECHNER ULRIKE DR ,  DESCHLER ULRICH DR ,  WITZEL MICHAEL DR

IPC: B27K3/36 ,  B27K3/34 ,  B27K5/04

公开(公告)号：AT83765T

公开(公告)日：1993-01-15

申请号：AT90101543

申请日：1990-01-26

Applicant: DEGUSSA

Inventor： DESCHLER ULRICH DR ,  LECHNER ULRIKE DR ,  WITZEL MICHAEL DR

IPC: C04B41/00 ,  A01N55/00 ,  A01N55/04 ,  B27K3/50 ,  C04B41/49 ,  C04B41/52 ,  C04B41/64 ,  C07F7/18 ,  C09D4/00 ,  C09D183/04 ,  C09K3/18

公开(公告)号：DE3868731D1

公开(公告)日：1992-04-09

申请号：DE3868731

申请日：1988-05-25

Applicant: DEGUSSA

Inventor： WITZEL MICHAEL DR ,  KLEINSCHMIT PETER DR ,  PFEIFER WOLF-DIETER DR ,  VOIGT CARL DR ,  ALBERS PETER DR

IPC: B01J23/40 ,  C01C3/02

Abstract: Prodn. of HCN under the conditions of the 'HCN-CH4-NH3' process, involves reacting 1-4 C aliphatic hydrocarbons (I) with NH3 in the presence of a catalyst (II). The novel features are that : (a) reaction is carried out initially with a catalyst precursor (IIA), consisting of alumina mouldings with Al ions and very small amts. of noble metal, pref. Pt ions applied to the surface from soln.; (b) (IIA) is dried and reduced with H2 before use; (c) (IIA) is placed in the HCN reactor, which is heated to 1000-1350 deg.C and charged with the usual mixt. of NH3 and (I) for this reaction, which is initiated by (IIA); and (d) after a short time, reaction is continued with the Al nitride film formed in situ on the surface of (IIA). Pref. (I) is CH4. (II) is a pref. tubular moulding prepd. from alpha-alumina by impregnation with H2PtCl6 soln. (pref. contg. 0.5-5 wt.% Pt ions) and an AlCl3, Al(NO3)3 or Al2(SO4)3 soln., pref. using a noble metal (Pt):Al molar ratio of 0.001-0.1:1, esp. 0.01-0.1:1.

公开(公告)号：DE3905919A1

公开(公告)日：1990-08-30

申请号：DE3905919

申请日：1989-02-25

Applicant: DEGUSSA

Inventor： DESCHLER ULRICH DR ,  LECHNER ULRIKE DR ,  WITZEL MICHAEL DR

IPC: C04B41/00 ,  A01N55/00 ,  A01N55/04 ,  B27K3/50 ,  C04B41/49 ,  C04B41/52 ,  C04B41/64 ,  C07F7/18 ,  C09D4/00 ,  C09D183/04 ,  C09K3/18

Abstract: The invention relates to mixtures containing organosilicon compounds and to their use for the waterproofing and antimicrobial impregnation of brick, masonry and concrete. … The organosilicon compounds are alkyltrialkoxysilanes and cationic trialkoxysilanes.

公开(公告)号：DE58906029D1

公开(公告)日：1993-12-02

申请号：DE58906029

申请日：1989-11-28

Applicant: DEGUSSA

Inventor： LECHNER ULRIKE DR ,  DESCHLER ULRICH DR ,  WITZEL MICHAEL DR

IPC: B27K3/36 ,  B27K3/34 ,  B27K5/04

公开(公告)号：AT96365T

公开(公告)日：1993-11-15

申请号：AT89121964

申请日：1989-11-28

Applicant: DEGUSSA

Inventor： LECHNER ULRIKE DR ,  DESCHLER ULRICH DR ,  WITZEL MICHAEL DR

IPC: B27K3/36 ,  B27K3/34 ,  B27K5/04