公开(公告)号：JP2000123843A

公开(公告)日：2000-04-28

申请号：JP29241899

申请日：1999-10-14

Applicant: DEGUSSA

Inventor： EMANUEL AUER ,  HEINZ GERHARD ,  LEHMANN THOMAS DR ,  SCHWARZ ROBERT ,  STARZ KARL-ANTON DR

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

Abstract: PROBLEM TO BE SOLVED: To provide an improved alloy catalyst of Pt/Rh/Fe for a fuel cell, more active and stable than a conventional catalyst. SOLUTION: This a platinum alloy catalyst on a conductive carbon carrier contains an alloy a fine alloy particle shape formed out of 40 to 60 atm.% platinum, 10 to 20 atm.% rhodium, and 20 to 50 atm.% iron. The catalyst is characterized by having the mean particle size of the alloy particles

公开(公告)号：DE59602928D1

公开(公告)日：1999-10-07

申请号：DE59602928

申请日：1996-04-26

Applicant: DEGUSSA

Inventor： FREUND ANDREAS ,  LEHMANN THOMAS ,  STARZ KARL-ANTON ,  HEINZ GERHARD ,  SCHWARZ ROBERT

IPC: C01B3/40 ,  B01J23/42 ,  B01J23/56 ,  B01J23/89 ,  B01J27/22 ,  C22C5/04 ,  H01M4/88 ,  H01M4/92 ,  H01M8/02

Abstract: Pt-Al alloy catalyst on a conducting carbon carrier is claimed, in which the atomic ratio of Pt to Al is 80-60: 20-40 and the alloy particles are present on the carbon carrier in carbided form with the structure of the Pt-Al carbide (Pt3AlC0.5). Prodn. of the catalyst is also claimed.

公开(公告)号：CA2238123A1

公开(公告)日：1998-11-21

申请号：CA2238123

申请日：1998-05-20

Applicant: DEGUSSA

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

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

Abstract: The invention relates to a platinum supported catalyst for the anode in a polymer electrode membrane (PEM) fuel cell with high resistance to poisoning by carbon monoxide. The catalyst contains the noble metals platinum and ruthenium on a finely divided, conductive support material. It is characterised in that the two noble metals are not alloyed with each other and are present in highly dispersed form on the support material, wherein the crystallite size of the platinum is less than 2 nm and that of the ruthenium is less than 1 nm.

公开(公告)号：DE59503910D1

公开(公告)日：1998-11-19

申请号：DE59503910

申请日：1995-07-04

Applicant: DEGUSSA

Inventor： BRAND REINHOLD DR ,  FREUND ANDREAS DR ,  LANG JUTTA DR ,  LEHMANN THOMAS DR ,  OHMER JOHANNES DR ,  TACKE THOMAS DR ,  HEINZ GERHARD ,  SCHWARZ ROBERT

IPC: B01J23/89 ,  B01J37/03 ,  H01M4/92

Abstract: A ternary platinum alloy catalyst on a conductive carbon carrier for use in fuel cells is disclosed. For the production of the catalyst, nitrate salts are used as precursors of the alloy components and all alloy components are deposited concurrently on the carbon carrier. This method of procedure yields ageing-stable catalysts with high oxygen mass activity.

公开(公告)号：CA2238123C

公开(公告)日：2009-07-14

申请号：CA2238123

申请日：1998-05-20

Applicant: DEGUSSA

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

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

Abstract: The invention relates to a platinum supported catalyst for the anode in a polymer electrolyte membrane (PEM) fuel cell with high resistance to poisoning by carbon monoxide. The catalyst contains the noble metals platinum and ruthenium on a finely divided, conductive support material. It is characterised in that the two noble metals are not alloyed with each other and are present in highly dispersed form on the support material, wherein the crystallite size of the platinum is less than 2 nm and that of the ruthenium is less than 1 nm.

公开(公告)号：DE19848032A1

公开(公告)日：2000-04-20

申请号：DE19848032

申请日：1998-10-17

Applicant: DEGUSSA

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

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

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.

公开(公告)号：DK0743092T3

公开(公告)日：2000-03-27

申请号：DK96106596

申请日：1996-04-26

Applicant: DEGUSSA

Inventor： FREUND ANDREAS DR ,  LEHMANN THOMAS DR ,  STARZ KARL-ANTON DR ,  HEINZ GERHARD ,  SCHWARZ ROBERT

IPC: C01B3/40 ,  B01J23/42 ,  B01J23/56 ,  B01J23/89 ,  B01J27/22 ,  C22C5/04 ,  H01M4/88 ,  H01M4/92 ,  H01M8/02

Abstract: Pt-Al alloy catalyst on a conducting carbon carrier is claimed, in which the atomic ratio of Pt to Al is 80-60: 20-40 and the alloy particles are present on the carbon carrier in carbided form with the structure of the Pt-Al carbide (Pt3AlC0.5). Prodn. of the catalyst is also claimed.

公开(公告)号：AT183946T

公开(公告)日：1999-09-15

申请号：AT96106596

申请日：1996-04-26

Applicant: DEGUSSA

Inventor： FREUND ANDREAS DR ,  LEHMANN THOMAS DR ,  STARZ KARL-ANTON DR ,  HEINZ GERHARD ,  SCHWARZ ROBERT

IPC: C01B3/40 ,  B01J23/42 ,  B01J23/56 ,  B01J23/89 ,  B01J27/22 ,  C22C5/04 ,  H01M4/88 ,  H01M4/92 ,  H01M8/02

Abstract: Pt-Al alloy catalyst on a conducting carbon carrier is claimed, in which the atomic ratio of Pt to Al is 80-60: 20-40 and the alloy particles are present on the carbon carrier in carbided form with the structure of the Pt-Al carbide (Pt3AlC0.5). Prodn. of the catalyst is also claimed.

公开(公告)号：DK0694982T3

公开(公告)日：1999-06-23

申请号：DK95110388

申请日：1995-07-04

Applicant: DEGUSSA

Inventor： BRAND REINHOLD DR ,  FREUND ANDREAS DR ,  LANG JUTTA DR ,  LEHMANN THOMAS DR ,  OHMER JOHANNES DR ,  TACKE THOMAS DR ,  HEINZ GERHARD ,  SCHWARZ ROBERT

IPC: B01J23/89 ,  B01J37/03 ,  H01M4/92

Abstract: A ternary platinum alloy catalyst on a conductive carbon carrier for use in fuel cells is disclosed. For the production of the catalyst, nitrate salts are used as precursors of the alloy components and all alloy components are deposited concurrently on the carbon carrier. This method of procedure yields ageing-stable catalysts with high oxygen mass activity.

公开(公告)号：AT172326T

公开(公告)日：1998-10-15

申请号：AT95110388

申请日：1995-07-04

Applicant: DEGUSSA

Inventor： BRAND REINHOLD DR ,  FREUND ANDREAS DR ,  LANG JUTTA DR ,  LEHMANN THOMAS DR ,  OHMER JOHANNES DR ,  TACKE THOMAS DR ,  HEINZ GERHARD ,  SCHWARZ ROBERT

IPC: B01J23/89 ,  B01J37/03 ,  H01M4/92

Abstract: A ternary platinum alloy catalyst on a conductive carbon carrier for use in fuel cells is disclosed. For the production of the catalyst, nitrate salts are used as precursors of the alloy components and all alloy components are deposited concurrently on the carbon carrier. This method of procedure yields ageing-stable catalysts with high oxygen mass activity.