公开(公告)号：JPH1076161A

公开(公告)日：1998-03-24

申请号：JP19538897

申请日：1997-07-22

Applicant: DEGUSSA

Inventor： AUER EMMANUEL DR ,  FREUND ANDREAS DR ,  GROS MICHAEL ,  HARTUNG ROLF

IPC: B01J23/46 ,  B01J23/656 ,  B01J23/889 ,  B01J23/89 ,  C07B61/00 ,  C07C209/36 ,  C07C211/45 ,  C07C211/46

Abstract: PROBLEM TO BE SOLVED: To ensure high selectively by doping iridium with at least one kind of element selected from among Mn, Co, Fe, Ni, Cu and Ru. SOLUTION: This catalyst contains iridium by 0.3-12wt.%, especially O. 5-7wt.% of the amt. of the carrier material and at least one kind of metal selected from among Mn, Fe, Co, Ni, Cu and Ru by 1-100wt.%, especially 5-50wt.% of the amt. of the iridium. It is produced by suspending a carrier in water, adding a soln. of salts of the required metals and reducing the salts with a water-soluble reducing agent at 0-100 deg.C. When this catalyst is used, a substd. arom. nitro compd. can be converted into the corresponding arom. amine by hydrogenation with high selectivity without producing a dehalogenated product and other undesirable by-product.

公开(公告)号：JPH11250918A

公开(公告)日：1999-09-17

申请号：JP35792398

申请日：1998-12-16

Applicant: DEGUSSA

Inventor： AUER EMMANUEL DR ,  BEHL WALTER ,  LEHMANN THOMAS DR ,  STENKE UDO

IPC: B01J23/40 ,  B01J23/42 ,  B01J23/46 ,  B01J35/00 ,  B01J35/06 ,  H01M4/86 ,  H01M4/88 ,  H01M4/92 ,  H01M8/10 ,  H01M8/1004 ,  H01M8/1018 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/12 ,  H01M8/02

Abstract: PROBLEM TO BE SOLVED: To improve resistance against carbon monoxide by using alloy grains having the average crystal size of a specific value, and forming an electric conductivity carrier material with carbon black, graphitized carbon black, graphite or activated carbon. SOLUTION: Alloy grains having the average crystal size of 0.5-2 nm are used for this alloy catalyst, e.g. a Pt/Ru alloy catalyst having alloy grains of 2 nm or below has very good CO resistance up to the carbon monoxide concentration of 150 ppm in combustion gas, however the electrochemical activity of the catalyst deteriorates when the grain size becomes below 0.5 nm. The carbon monoxide adsorbed to platinum atoms is brought into contact with ruthenium atoms during the diffusion process on the alloy grains, it is oxidized into carbon dioxide under its existence, and the platinum surface can be effectively regenerated. The ratio of platinum/ruthenium alloy grains is set to the concentration of 10-50 wt.% against the total weight of the alloy catalyst.

公开(公告)号：JP2001123091A

公开(公告)日：2001-05-08

申请号：JP2000254510

申请日：2000-08-24

Applicant: DEGUSSA

Inventor： VOGEL KARL DR ,  AUER EMMANUEL DR ,  STARZ KARL-ANTON DR ,  ALBERS PETER ,  BERGEMANN KLAUS ,  VOGLER CONNY DR

IPC: C09C1/50 ,  H01M4/62 ,  H01M4/96

Abstract: PROBLEM TO BE SOLVED: To produce a carbon black which exhibits a high activity when used as a support material for an electrolytic catalyst in a fuel cell. SOLUTION: In producing a carbon black having an H content higher than 4,000 ppm and a peak integration ratio of non-conjugated H atoms (1,250-2,000 cm-1) to H atoms of aromatic hydrocarbons and graphitized hydrocarbons (1,000-1,250 cm-1 and 750-1,000 cm-1) lower than 1.22, a liquid material for carbon black and a gaseous material for carbon black are supplied at the same position in a furnace carbon black production process.

公开(公告)号：JPH10334925A

公开(公告)日：1998-12-18

申请号：JP13813098

申请日：1998-05-20

Applicant: DEGUSSA

Inventor： AUER EMMANUEL DR ,  FREUND ANDREAS DR ,  LEHMANN THOMAS DR ,  STARZ KARL-ANTON DR ,  SCHWARZ ROBERT DR ,  STENKE UDO DR

IPC: H01M4/88 ,  B01J23/42 ,  B01J23/46 ,  B01J35/02 ,  B01J35/06 ,  H01M4/86 ,  H01M4/92 ,  H01M8/10

Abstract: PROBLEM TO BE SOLVED: To provide a platinum carrier catalyst for the anode of a PEM fuel cell having good resistance against poisoning from carbon monoxide by containing platinum and ruthenium crystallite mutually unalloyed and having specific sizes on a fine conductive carrier material. SOLUTION: A fine conductive carrier material made of carbon black, graphitized carbon black, graphite, or activated carbon is dispersed in water. The soluble compound aqueous solution of platinum and/or ruthenium is added to this suspension, it is adjusted to pH 7-9 by an alkaline solution, and a reducing agent containing aldehyde is added at a constant temperature of 50-80 deg.C. Platinum and/or ruthenium is reduced and completely deposited on the material, then are filtered, washed, and dried at 200 deg.C or below. The platinum and ruthenium of two noble metals are mutually unalloyed and highly dispersed on a carrier, and a CO-resistant platinum carrier catalyst having platinum crystallite below 2 nm and ruthenium crystallite below 1 nm is obtained.

公开(公告)号：ES2154373T3

公开(公告)日：2001-04-01

申请号：ES96115227

申请日：1996-09-23

Applicant: DEGUSSA

Inventor： LANSINK-ROTGERINK HANS DR ,  WIELAND STEFAN DR ,  AUER EMMANUEL DR

IPC: B01J21/06 ,  B01J21/08 ,  B01J21/12 ,  B01J31/02 ,  B01J37/02 ,  C07B61/00 ,  C07C37/20 ,  C07C39/16 ,  C07F7/18

Abstract: A silica based solid material is claimed, which is modified on its surface with organosilicon compounds of formula ((RO)ySiR -SO3 )xM(power x ) (I) and (RO)ySi-R -SH (II). R , R = independently 1-12 C alkylene, 5-8 C cycloalkylene or units of formula (IIIa) or (IIIb); m, n = 0-6; M = H , NH4 or a metal ion with a valency of 1-4; H provides at least 5% of the ion exchange capacity of (I); y = 1-3; and R = independently H, CH3, CH2CH3 or propyl.

公开(公告)号：BR0004573A

公开(公告)日：2001-04-03

申请号：BR0004573

申请日：2000-08-28

Applicant: DMC2 DEGUSSA METALS CATALYSTS

Inventor： ALBERS PETER DR ,  AUER EMMANUEL DR ,  BEHL WALTER ,  VOGEL KARL DR ,  VOGLER CONNY DR

IPC: C22C5/04 ,  B01J21/18 ,  B01J23/42 ,  B01J37/03 ,  H01M4/88 ,  H01M4/90 ,  H01M4/92 ,  H01M4/96 ,  H01M8/1004 ,  B01J39/24 ,  B01J41/18 ,  B01J43/00 ,  B01J37/16 ,  B01J37/025

Abstract: Electrocatalyst which are formed of a carbon support, which is a carbon black with an H content of >4000 ppm and, as the catalytically active component, platinum or bi- or multi-metallically doped or alloyed platinum. The electrocatalysts are prepared by deposition of noble metals on the carbon black surface. They can be used for the production of fuel cells.

公开(公告)号：DE19536366A1

公开(公告)日：1997-04-03

申请号：DE19536366

申请日：1995-09-29

Applicant: DEGUSSA

Inventor： AUER EMMANUEL DR ,  WIELAND STEFAN DR ,  LANSINK-ROTGERINK HANS DR ,  JACOBSEN HAUKE DR ,  RIEDEMANN HEIKE

IPC: C07C37/11 ,  C07C37/20 ,  C07C39/16 ,  C07C37/16

Abstract: The prodn. of 2,2'-bis-(4-hydroxyphenyl)-propanes (BHPP) comprises reacting the corresp. phenols and carbonyl cpds. at 40-150 degrees C in presence of a formed acid catalyst consisting of a sulphonate gp.- and mercapto gp.-contg. organopolysiloxane (OFP) contg. units of formula (O3/2SiR'SO3)M(x+) (I) and O3/2SiR SH (III). In (I) and (III), R = 1-12C alkylene, 5-8C cycloalkylene or a gp. of formula -(CH2)n-Cyc-(CH2)m- or -(CH2)n-Phe-(CH2)m- (II) (with n, m = 0-6, i.e. the no. of Si- or S-linked CH2 gps.; Cyc = cyclohexylene; Phe = phenylene); M = H, opt. NH4, or a metal with a valency of x = 1-4; R = R . The free valencies of the O atoms attached to Si are taken up by the Si atoms of other gps. (I) and/or (II) and/or by the metal atom-oxygen gps. of crosslinking bridging gps. of formula SiO4/2 (IV) and opt. R''SiO3/2, R'SiO3/2, R'2SiO2/2, AlO3/2, R'AlO2/2, TiO4/2, R'TiO3/2 and R'2TiO2/2 (V). In (V) and (IV), R' = Me or Et; R" = Ph or 2-12C alkyl. The ratio of gps. (I):(III) = (10:1)-(1:10), the ratio of (I):(IV) = (1:3)-(1:20), and the ratio of (IV):(V) = (1:0)-(1:0.5). The required prod. is then isolated.

公开(公告)号：AT214411T

公开(公告)日：2002-03-15

申请号：AT99116930

申请日：1999-08-27

Applicant: DEGUSSA

Inventor： ALBERS PETER DR ,  AUER EMMANUEL DR ,  BERGEMANN KLAUS DR ,  STARZ KARL-ANTON DR ,  VOLGE KARL DR ,  VOGLER CONNY DR

IPC: C09C1/50 ,  H01M4/62 ,  H01M4/96

Abstract: Furnace black (I) has a hydrogen (H) content of over 4000 ppm, determined by CHN analysis, and peak integral ratio less than 1.22, determined by inelastic neutron scattering (INS) of unconjugated H atoms (1250-2000 cm ) to aromatic and graphitic H atoms (1000-1250 cm and 750-1000 cm ). An Independent claim is also included for the production of (I).

公开(公告)号：HU222689B1

公开(公告)日：2003-09-29

申请号：HU0003411

申请日：2000-08-25

Applicant: DEGUSSA

Inventor： ALBERS PETER DR ,  AUER EMMANUEL DR ,  BERGEMANN KLAUS DR ,  STARZ KARL-ANTON DR ,  VOGEL KARL DR ,  VOGLER CONNY DR

IPC: C09C1/50 ,  H01M4/62 ,  H01M4/96

Abstract: Furnace black (I) has a hydrogen (H) content of over 4000 ppm, determined by CHN analysis, and peak integral ratio less than 1.22, determined by inelastic neutron scattering (INS) of unconjugated H atoms (1250-2000 cm ) to aromatic and graphitic H atoms (1000-1250 cm and 750-1000 cm ). An Independent claim is also included for the production of (I).

公开(公告)号：BR9904688A

公开(公告)日：2000-08-08

申请号：BR9904688

申请日：1999-10-15

Applicant: DEGUSSA

Inventor： AUER EMMANUEL DR ,  HEINZ GERHARD ,  LEHMANN THOMAS DR ,  STARZ KARL-ANTON

IPC: B01J23/40 ,  B01J23/42 ,  B01J23/46 ,  B01J23/56 ,  B01J23/89 ,  B01J35/02 ,  H01M4/92 ,  B01J37/03

Abstract: Platinum alloy catalyst contains 40-60 atom % Pt, 10-20 atom % Rh and 20-50 atom % Fe in the form of alloying particles of average diameter of less than 10 nm on an electrically conducting carbon support. An Independent claim is also included for the production of a Pt alloy catalyst comprising: (a) preparing a support suspension of the carbon support in water; (b) heating the suspension to the boiling point and maintaining at that temperature during the following steps; (c) adding aqueous solutions of hexachloroplatinic acid and rhodium chloride and also iron nitrate; precipitating out Pt, Rh and Fe by slowly adding caustic soda; (e) reducing the precipitated out compounds by adding an aqueous reductant; (f) removing the catalyst from the aqueous phase of the suspension; (g) drying the catalyst; (h) calcining the catalyst in an inert atmosphere at 700-1000o C for 0.5-2 hours; and (i) reducing the temperature from 700 to 500o C for a further 0.5-2 hours.