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1.发明申请Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith 有权制备贵金属合金催化剂的方法及其制备的催化剂公开(公告)号：US20100190641A1
公开(公告)日：2010-07-29
申请号：US12752410
申请日：2010-04-01
CPC分类号： B82Y30/00 , B01D53/944 , B01D2255/1021 , B01D2255/1026 , B01D2255/106 , B01D2255/20746 , B01D2255/9202 , B01D2257/502 , B01J21/18 , B01J23/40 , B01J23/462 , B01J23/52 , B01J23/8913 , B01J35/0013 , B01J35/006 , B01J37/0072 , B01J37/0211 , B01J37/088 , B22F9/24 , B22F2998/00 , H01M4/921 , H01M4/926 , B22F2303/01 , B22F2301/25 , B22F2303/05 , B22F2301/15
摘要： The present invention provides a method for manufacture of supported noble metal based alloy catalysts with a high degree of alloying and a small crystallite size. The method is based on the use of polyol solvents as reaction medium and comprises of a two-step reduction process in the presence of a support material. In the first step, the first metal (M1 =transition metal; e.g. Co, Cr, Ru) is activated by increasing the reaction temperature to 80 to 160° C. In the second step, the second metal (M2=noble metal; e.g. Pt, Pd, Au and mixtures thereof) is added and the slurry is heated to the boiling point of the polyol solvent in a range of 160 to 300° C. Due to this two-step method, an uniform reduction occurs, resulting in noble metal based catalysts with a high degree of alloying and a small crystallite size of less than 3 nm. Due to the high degree of alloying, the lattice constants are lowered. The catalysts manufactured according to the method are used as electrocatalysts for polymer electrolyte membrane fuel cells (PEMFC), direct-methanol fuel cells (DMFC) or as gas phase catalysts for CO oxidation or exhaust gas purification.
摘要翻译： 本发明提供一种具有高合金化和微晶尺寸的负载型贵金属基合金催化剂的制造方法。 该方法基于使用多元醇溶剂作为反应介质，并且包括在存在载体材料的情况下的两步还原过程。 在第一步骤中，第一金属（M1 =过渡金属，例如Co，Cr，Ru）通过将反应温度升高至80至160℃来活化。在第二步中，第二金属（M2 =贵金属;例如 Pt，Pd，Au及其混合物），将浆料加热到多元醇溶剂的沸点在160〜300℃的范围内。由于这种两步法，发生均匀的还原，导致贵金属 具有高度合金化和小于3nm的微晶尺寸的金属基催化剂。 由于高合金化，晶格常数降低。 根据该方法制造的催化剂用作聚合物电解质膜燃料电池（PEMFC），直接甲醇燃料电池（DMFC）或用于CO氧化或废气净化的气相催化剂的电极催化剂。
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2.发明申请Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith 有权制备贵金属合金催化剂的方法及其制备的催化剂公开(公告)号：US20120058888A1
公开(公告)日：2012-03-08
申请号：US13223750
申请日：2011-09-01
IPC分类号： B01J23/89
CPC分类号： B82Y30/00 , B01D53/944 , B01D2255/1021 , B01D2255/1026 , B01D2255/106 , B01D2255/20746 , B01D2255/9202 , B01D2257/502 , B01J21/18 , B01J23/40 , B01J23/462 , B01J23/52 , B01J23/8913 , B01J35/0013 , B01J35/006 , B01J37/0072 , B01J37/0211 , B01J37/088 , B22F9/24 , B22F2998/00 , H01M4/921 , H01M4/926 , B22F2303/01 , B22F2301/25 , B22F2303/05 , B22F2301/15
摘要： The invention provides a method for manufacturing supported noble metal based alloy catalysts with a high degree of alloying and a small crystallite size. The method involves using polyol solvents as reaction medium and comprises a two-step reduction process in the presence of a support material. In the first step, the first metal (transition metal; e.g. Co, Cr, Ru) is activated by increasing the reaction temperature to 80 to 160° C. In the second step, the second metal (noble metal; e.g. Pt, Pd, Au) is added and the slurry is heated to the boiling point of the polyol solvent in a range of 160 to 300° C. The catalysts manufactured according to the method are used as electrocatalysts for polymer electrolyte membrane fuel cells (PEMFC), direct-methanol fuel cells (DMFC) or as gas phase catalysts for CO oxidation or exhaust gas purification.
摘要翻译： 本发明提供一种具有高合金化和微晶尺寸的负载型贵金属基合金催化剂的制造方法。 该方法包括使用多元醇溶剂作为反应介质，并且在载体材料存在下包括两步还原方法。 在第一步骤中，第一金属（过渡金属，例如Co，Cr，Ru）通过将反应温度升高至80至160℃而被活化。在第二步中，第二金属（贵金属，例如Pt，Pd， Au），将浆料加热到多元醇溶剂的沸点在160〜300℃的范围内。根据该方法制造的催化剂用作聚合物电解质膜燃料电池（PEMFC）的电极催化剂， 甲醇燃料电池（DMFC）或用于CO氧化或废气净化的气相催化剂。
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公开(公告)号：US20120316054A1
公开(公告)日：2012-12-13
申请号：US13557103
申请日：2012-07-24
CPC分类号： B22F1/025 , B22F1/0018 , B22F2998/00 , B82Y30/00 , H01M4/8605 , H01M4/8842 , H01M4/921 , H01M4/926 , H01M8/1007 , Y10T29/49345 , Y10T428/2991 , B22F9/24
摘要： The invention discloses core/shell, type catalyst particles comprising a Mcore/Mshell structure with Mcore=inner particle core and Mshell=outer particle shell, wherein the medium diameter of the catalyst particle (dcore+shell) is in the range of 20 to 100 nm, preferably in the range of 20 to 50 nm. The thickness of the outer shell (tshell) is about 5 to 20% of the diameter of the inner particle core of said catalyst particle, preferably comprising at least 3 atomic layers. The core/shell type catalyst particles, particularly the particles comprising a Pt˜based shell reveal a high specific activity. The catalyst particles are preferably supported on suitable support materials such as carbon black and are used as electrocatalysts for fuel cells.
摘要翻译： 本发明公开了包含Mcore / Mshell结构的核/壳型催化剂颗粒，其中Mcore =内颗粒核和Mshell =外颗粒壳，其中催化剂颗粒的介质直径（dcore +壳）在20至100的范围内 nm，优选在20〜50nm的范围内。 外壳的厚度（tshell）为所述催化剂颗粒的内颗粒芯的直径的约5至20％，优选包含至少3个原子层。 核/壳型催化剂颗粒，特别是包含基于Pt的壳的颗粒显示高的比活性。 催化剂颗粒优选负载在合适的载体材料如炭黑上，并用作燃料电池的电催化剂。
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公开(公告)号：US20110086295A1
公开(公告)日：2011-04-14
申请号：US12797520
申请日：2010-06-09
CPC分类号： H01M4/921 , H01M4/925 , H01M4/926 , Y10T428/2991
摘要： The invention discloses core/shell type catalyst particles comprising a Mcore/Mshell structure with Mcore=inner particle core and Mshell=outer particle shell, wherein the medium diameter of the catalyst particle (dcore+shell) is ≧20 nm. The thickness of the outer shell (tshell) comprises at least 3 atomic layers.The core/shell type catalyst particles, particularly the particles comprising a Pt-based shell, reveal a high specific activity. The catalyst particles are preferably supported on suitable support materials such as carbon black and are used as electrocatalysts for fuel cells.
摘要翻译： 本发明公开了包含Mcore / Mshell结构的核/壳型催化剂颗粒，其中Mcore =内颗粒核和Mshell =外颗粒壳，其中催化剂颗粒的介质直径（dcore +壳）为≥20nm。 外壳的厚度（tshell）包括至少3个原子层。 核/壳型催化剂颗粒，特别是包含Pt基壳的颗粒显示高的比活性。 催化剂颗粒优选负载在合适的载体材料如炭黑上，并用作燃料电池的电催化剂。
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