公开(公告)号：CA2806810A1

公开(公告)日：2012-02-16

申请号：CA2806810

申请日：2011-07-13

Applicant: EVONIK DEGUSSA GMBH

Inventor： LATOSCHINSKI GUENTER ,  OENAL YUECEL ,  SAUER JOERG ,  STOCHNIOL GUIDO ,  PAULI INGO

IPC: C01B33/107

Abstract: The invention relates to a method for converting silicon tetrachloride by means of hydrogen to form trichlorosilane in a modified hydrodechlorination reactor. The invention further relates to a the use of such a modified hydrodechlorination reactor as an integrated component of a system for producing trichlorosilane from metallurgical silicon.

公开(公告)号：ZA201102327B

公开(公告)日：2012-01-25

申请号：ZA201102327

申请日：2011-03-29

Applicant: EVONIK DEGUSSA GMBH

Inventor： RAULEDER HARTWIG ,  SIRAY MUSTAFA ,  FRINGS BODO ,  KARL ALFONS ,  GROTH THOMAS ,  ROCHNIA MATTHIAS ,  WOLF OLIVIER ,  NOWITZKI BERND ,  MUH EKKEHARD ,  NAGLER PETER ,  LUNT-RIEG INGRID ,  PANZ CHRISTIAN ,  STOCHNIOL GUIDO ,  LANG JURGEN ERWIN ,  SCHMITZ RUDOLF ,  WEWERS DIETMAR

IPC: C01B20060101

Abstract: The invention relates to a complete method for producing pure silicon that is suitable for use as solar-grade silicon, comprising the reduction of a purified silicon oxide using one or more pure carbon sources, the purified silicon oxide, which was purified as silicon oxide dissolved in an aqueous phase, having a content of other polyvalent metals or metal oxides, in relation to the silicon oxide, of less than or equal to 300 ppm, preferably less than 100 ppm, especially preferably less than 50 ppm and according to the invention less than 10 ppm of the other metals and being obtained advantageously by gel formation in alkaline conditions. The invention also relates to a formulation containing an activator and to the use of purified silicon oxide together with an activator for producing silicon.

公开(公告)号：AT531670T

公开(公告)日：2011-11-15

申请号：AT02019947

申请日：2002-09-05

Applicant: EVONIK DEGUSSA GMBH

Inventor： HAAS THOMAS ,  STOCHNIOL GUIDO ,  ROLLMANN JUERGEN

IPC: C01B15/029 ,  B01J8/02 ,  B01J19/00 ,  B01J23/44 ,  B01J23/52 ,  B01J35/00 ,  C07D301/03

公开(公告)号：AT419221T

公开(公告)日：2009-01-15

申请号：AT03798172

申请日：2003-09-23

Applicant: EVONIK DEGUSSA GMBH

Inventor： BRASSE CLAUDIA ,  GLENNEBERG JUERGEN ,  HAAS THOMAS ,  STOCHNIOL GUIDO ,  WOELL WOLFGANG

IPC: C01B15/023 ,  B01J29/04 ,  B01J29/89 ,  C01B15/013 ,  C01B15/037 ,  C07D301/12 ,  C07D303/04

Abstract: An aqueous hydrogen peroxide solution comprises less than 50 wppm alkali metals and/or alkaline earth metals, less than 50 wppm amines having a pkB of less than 4.5 or the protonated compounds in total, and >= 100 wppm anions or compounds that can dissociate to form anions in total. An independent claim is also included for a method for the preparation of the hydrogen peroxide solution comprising: (a) hydrogenation of a working solution comprising organic solvent(s) and active anthraquinone compound(s); (b) oxidation of the hydrogenated working solution to form hydrogen peroxide; (c) extraction of hydrogen peroxide with water; (d) stabilizing the extracted aqueous hydrogen peroxide solution; (e) concentrating the aqueous hydrogen peroxide solution to a concentration of hydrogen peroxide of >= 50 wt.%; (f) drying of the working solution; and (g) regeneration and purification of the working solution.

公开(公告)号：ZA200502508B

公开(公告)日：2006-03-29

申请号：ZA200502508

申请日：2006-01-19

Applicant: DEGUSSA ,  UNDE GMBH

Inventor： BRASSE CLAUDIA ,  HOFEN WILLI ,  THIELE GEORG ,  HAAS THOMAS ,  STOCHNIOL GUIDO ,  WOELL WOLFGANG

IPC: C07D20060101 ,  C07D301/12

Abstract: Epoxidation of olefins with hydrogen peroxide in the presence of a heterogeneous catalyst promoting the epoxidation reaction comprises an aqueous reaction mixture comprising an olefin; hydrogen peroxide; less than 100 wppm alkali metals, alkaline earth metals, both irrespective whether in ionic or complex form, bases, and/or cations of bases having a pkB of less than 4.5; and >= 100 wppm bases or cations of bases having a pkB of >= 4.5.

公开(公告)号：AT313522T

公开(公告)日：2006-01-15

申请号：AT03763651

申请日：2003-06-25

Applicant: DEGUSSA

Inventor： JAEGER BERND ,  HAAS THOMAS ,  STOCHNIOL GUIDO ,  LETTMANN CHRISTIAN ,  HOFEN WILLI ,  STADTMUELLER KLAUS ,  LOTZ JOERG

IPC: C07B61/00 ,  C07C209/72 ,  C07C211/36 ,  C07C209/00

公开(公告)号：PL374703A1

公开(公告)日：2005-10-31

申请号：PL37470303

申请日：2003-09-23

Applicant: DEGUSSA

Inventor： BRASSE CLAUDIA ,  GLENNEBERG JUERGEN ,  HAAS THOMAS ,  STOCHNIOL GUIDO ,  WOELL WOLFGANG

IPC: B01J29/04 ,  B01J29/89 ,  C01B15/013 ,  C01B15/023 ,  C01B15/037 ,  C07D301/12 ,  C07D303/04

Abstract: An aqueous hydrogen peroxide solution comprises less than 50 wppm alkali metals and/or alkaline earth metals, less than 50 wppm amines having a pkB of less than 4.5 or the protonated compounds in total, and >= 100 wppm anions or compounds that can dissociate to form anions in total. An independent claim is also included for a method for the preparation of the hydrogen peroxide solution comprising: (a) hydrogenation of a working solution comprising organic solvent(s) and active anthraquinone compound(s); (b) oxidation of the hydrogenated working solution to form hydrogen peroxide; (c) extraction of hydrogen peroxide with water; (d) stabilizing the extracted aqueous hydrogen peroxide solution; (e) concentrating the aqueous hydrogen peroxide solution to a concentration of hydrogen peroxide of >= 50 wt.%; (f) drying of the working solution; and (g) regeneration and purification of the working solution.

公开(公告)号：BR0314941A

公开(公告)日：2005-08-02

申请号：BR0314941

申请日：2003-09-23

Applicant: DEGUSSA

Inventor： GLENNEBERG JUERGEN ,  HAAS THOMAS ,  STOCHNIOL GUIDO ,  WOELL WOLFGANG ,  BRASSE CLAUDIA

IPC: B01J29/04 ,  B01J29/89 ,  C01B15/013 ,  C01B15/023 ,  C01B15/037 ,  C07D301/12 ,  C07D303/04

Abstract: An aqueous hydrogen peroxide solution comprises less than 50 wppm alkali metals and/or alkaline earth metals, less than 50 wppm amines having a pkB of less than 4.5 or the protonated compounds in total, and >= 100 wppm anions or compounds that can dissociate to form anions in total. An independent claim is also included for a method for the preparation of the hydrogen peroxide solution comprising: (a) hydrogenation of a working solution comprising organic solvent(s) and active anthraquinone compound(s); (b) oxidation of the hydrogenated working solution to form hydrogen peroxide; (c) extraction of hydrogen peroxide with water; (d) stabilizing the extracted aqueous hydrogen peroxide solution; (e) concentrating the aqueous hydrogen peroxide solution to a concentration of hydrogen peroxide of >= 50 wt.%; (f) drying of the working solution; and (g) regeneration and purification of the working solution.

公开(公告)号：AU2003288162A1

公开(公告)日：2004-06-18

申请号：AU2003288162

申请日：2003-11-25

Applicant: DEGUSSA

Inventor： HAAS THOMAS ,  HOFEN WILLI ,  WOLL WOLFGANG ,  BRASSE CLAUDIA ,  STOCHNIOL GUIDO ,  ULLRICH NORBERT

IPC: C07D301/12

Abstract: The present invention refers to a process for the catalytic epoxidation of olefins in the presence of a titanium containing zeolite catalyst and a polar solvent whereby the deactivation of the catalyst upon recycling of the solvent has been considerably reduced. In the process one or more nitrogen containing compounds are introduced at some stage, a solvent stream is recovered, treated to contain less than 50 wppm nitrogen in the form of organic nitrogen compounds and at least a part of it is recycled to the epoxidation step. The invention is also directed towards a process for the catalytic epoxidation of propene which integrates the inventive treatment and recycle of the solvent into the workup of the reaction mixture.

公开(公告)号：DE10253802A1

公开(公告)日：2004-06-03

申请号：DE10253802

申请日：2002-11-18

Applicant: DEGUSSA

Inventor： FINKE NORBERT ,  LOMOELDER RAINER ,  LETTMANN CHRISTIAN ,  STOCHNIOL GUIDO

IPC: B01J23/46 ,  B01J35/00 ,  B01J35/10 ,  B01J37/02 ,  B01J37/18 ,  C07B61/00 ,  C07C269/06 ,  C07C271/12 ,  C07C271/24 ,  C07C271/06

Abstract: Hydrogenation of aromatic urethanes comprises reaction of the aromatic urethanes with hydrogen in the presence of a supported catalyst comprising 0.01-20 wt.% ruthenium on a support having a BET surface area of 30-70 m2/g and greater than 50 % of the pore volume comprising macropores having a pore diameter of greater than 50 nm and less than 50% mesopores having a pore diameter of 2-50 nm. A process for the hydrogenation of aromatic urethanes having one or more aromatic rings and at least one urethane group that is directly and/or indirectly bonded to at least one aromatic ring, comprises reaction of the aromatic urethanes with hydrogen in the presence of a supported catalyst (I) comprising 0.01-20 wt.% ruthenium, optionally with at least one Group 1, 7 or 8 metal as the active metal on a support having a BET surface area of 30-70 m2/g and greater than 50 % of the pore volume comprising macropores having a pore diameter of greater than 50 nm and less than 50 % mesopores having a pore diameter of 2-50 nm.