公开(公告)号：US07612011B2

公开(公告)日：2009-11-03

申请号：US11605515

申请日：2006-11-28

申请人： Thomas Henry Vanderspurt ,  Fabienne Wijzen ,  Xia Tang ,  Miriam P. Leffler ,  Rhonda R. Willigan ,  Caroline A. Newman ,  Rakesh Radhakrishnan ,  Fangxia Feng ,  Bruce Leon Laube ,  Zissis Dardas ,  Susanne M. Opalka ,  Ying She

发明人： Thomas Henry Vanderspurt ,  Fabienne Wijzen ,  Xia Tang ,  Miriam P. Leffler ,  Rhonda R. Willigan ,  Caroline A. Newman ,  Rakesh Radhakrishnan ,  Fangxia Feng ,  Bruce Leon Laube ,  Zissis Dardas ,  Susanne M. Opalka ,  Ying She

IPC分类号： C01F17/00

CPC分类号： C01G27/006 ,  B01J23/002 ,  B01J23/10 ,  B01J23/63 ,  B01J23/6567 ,  B01J35/10 ,  B01J35/1019 ,  B01J35/1061 ,  B01J37/0036 ,  B01J37/03 ,  B01J2523/00 ,  B82Y30/00 ,  C01B3/16 ,  C01B2203/0283 ,  C01B2203/044 ,  C01B2203/066 ,  C01B2203/1064 ,  C01B2203/107 ,  C01B2203/1082 ,  C01F17/0043 ,  C01G25/00 ,  C01G25/006 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2002/82 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16 ,  Y02P20/52 ,  Y10T436/12 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/3706 ,  B01J2523/3718 ,  B01J2523/49 ,  B01J2523/375 ,  B01J2523/32 ,  B01J2523/74 ,  B01J2523/828 ,  B01J2523/56 ,  B01J2523/824 ,  B01J2523/68 ,  B01J2523/821 ,  B01J2523/3737 ,  B01J2523/827 ,  B01J2523/822

摘要： A homogeneous ceria-based mixed-metal oxide, useful as a catalyst support, a co-catalyst and/or a getter has a relatively large surface area per weight, typically exceeding 150 m2/g, a structure of nanocrystallites having diameters of less than 4 nm, and including pores larger than the nanocrystallites and having diameters in the range of 4 to about 9 nm. The ratio of pore volumes, VP, to skeletal structure volumes, VS, is typically less than about 2.5, and the surface area per unit volume of the oxide material is greater than 320 m2/cm3, for low internal mass transfer resistance and large effective surface area for reaction activity. The mixed metal oxide is ceria-based, includes Zr and or Hf, and is made by a novel co-precipitation process. A highly dispersed catalyst metal, typically a noble metal such as Pt, may be loaded on to the mixed metal oxide support from a catalyst metal-containing solution following a selected acid surface treatment of the oxide support. Appropriate ratioing of the Ce and other metal constituents of the oxide support contribute to it retaining in a cubic phase and enhancing catalytic performance. Rhenium is preferably further loaded on to the mixed-metal oxide support and passivated, to increase the activity of the catalyst. The metal-loaded mixed-metal oxide catalyst is applied particularly in water gas shift reactions as associated with fuel processing systems, as for fuel cells.

摘要翻译： 可用作催化剂载体，助催化剂和/或吸气剂的均匀二氧化铈基混合金属氧化物具有相对较大的每重量的表面积，通常超过150m 2 / g，直径小于 4nm，并且包括大于纳米晶体的孔，并且具有在4至约9nm范围内的直径。 孔体积VP与骨架结构体积的比率VS通常小于约2.5，并且氧化物材料的每单位体积的表面积大于320m 2 / cm 3，对于低内部传质阻力和大的有效 反应活性的表面积。 复合金属氧化物是二氧化铈基，包括Zr和Hf，并且通过新的共沉淀法制备。 通过选择的氧化物载体的酸表面处理，可以将高度分散的催化剂金属（通常为贵金属如Pt）负载到来自含催化剂金属的溶液的混合金属氧化物载体上。 Ce和其他金属成分对氧化物载体的适当比例有助于其保持立方相并提高催化性能。 优选将铼进一步负载在混合金属氧化物载体上并钝化，以提高催化剂的活性。 负载金属的混合金属氧化物催化剂特别适用于燃料处理系统与燃料电池相关的水煤气变换反应。

公开(公告)号：US07166263B2

公开(公告)日：2007-01-23

申请号：US10402808

申请日：2003-03-28

申请人： Thomas Henry Vanderspurt ,  Fabienne Wijzen ,  Xia Tang ,  Miriam P. Leffler ,  Rhonda R. Willigan ,  Caroline A. Newman ,  Rakesh Radhakrishnan ,  Fangxia Feng ,  Bruce Leon Laube ,  Zissis Dardas ,  Susanne M. Opalka ,  Ying She

发明人： Thomas Henry Vanderspurt ,  Fabienne Wijzen ,  Xia Tang ,  Miriam P. Leffler ,  Rhonda R. Willigan ,  Caroline A. Newman ,  Rakesh Radhakrishnan ,  Fangxia Feng ,  Bruce Leon Laube ,  Zissis Dardas ,  Susanne M. Opalka ,  Ying She

IPC分类号： C01F17/00

CPC分类号： C01G27/006 ,  B01J23/002 ,  B01J23/10 ,  B01J23/63 ,  B01J23/6567 ,  B01J35/10 ,  B01J35/1019 ,  B01J35/1061 ,  B01J37/0036 ,  B01J37/03 ,  B01J2523/00 ,  B82Y30/00 ,  C01B3/16 ,  C01B2203/0283 ,  C01B2203/044 ,  C01B2203/066 ,  C01B2203/1064 ,  C01B2203/107 ,  C01B2203/1082 ,  C01F17/0043 ,  C01G25/00 ,  C01G25/006 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2002/82 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16 ,  Y02P20/52 ,  Y10T436/12 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/3706 ,  B01J2523/3718 ,  B01J2523/49 ,  B01J2523/375 ,  B01J2523/32 ,  B01J2523/74 ,  B01J2523/828 ,  B01J2523/56 ,  B01J2523/824 ,  B01J2523/68 ,  B01J2523/821 ,  B01J2523/3737 ,  B01J2523/827 ,  B01J2523/822

摘要： A homogeneous ceria-based mixed-metal oxide, useful as a catalyst support, a co-catalyst and/or a getter has a relatively large surface area per weight, typically exceeding 150 m2/g, a structure of nanocrystallites having diameters of less than 4 nm, and including pores larger than the nanocrystallites and having diameters in the range of 4 to about 9 nm. The ratio of pore volumes, VP, to skeletal structure volumes, VS, is typically less than about 2.5, and the surface area per unit volume of the oxide material is greater than 320 m2/cm3, for low internal mass transfer resistance and large effective surface area for reaction activity. The mixed metal oxide is ceria-based, includes Zr and or Hf, and is made by a novel co-precipitation process. A highly dispersed catalyst metal, typically a noble metal such as Pt, may be loaded on to the mixed metal oxide support from a catalyst metal-containing solution following a selected acid surface treatment of the oxide support. Appropriate ratioing of the Ce and other metal constituents of the oxide support contribute to it retaining in a cubic phase and enhancing catalytic performance. Rhenium is preferably further loaded on to the mixed-metal oxide support and passivated, to increase the activity of the catalyst. The metal-loaded mixed-metal oxide catalyst is applied particularly in water gas shift reactions as associated with fuel processing systems, as for fuel cells.

摘要翻译： 可用作催化剂载体，助催化剂和/或吸气剂的均匀的二氧化铈基混合金属氧化物具有相对较大的每重量的表面积，通常超过150m 2 / g， 具有直径小于4nm的纳米晶体的结构，并且包括大于纳米微晶并且直径在4至约9nm范围内的孔。 孔体积V V P与骨架结构体积V S S的比例通常小于约2.5，并且氧化物材料的每单位体积的表面积为 大于320m 2 / cm 3，因为低的内部传质阻力和反应活性的大的有效表面积。 复合金属氧化物是二氧化铈基，包括Zr和Hf，并且通过新的共沉淀法制备。 通过选择的氧化物载体的酸表面处理，可以将高度分散的催化剂金属（通常为贵金属如Pt）负载到来自含催化剂金属的溶液的混合金属氧化物载体上。 Ce和其他金属成分对氧化物载体的适当比例有助于其保持立方相并提高催化性能。 优选将铼进一步负载在混合金属氧化物载体上并钝化，以提高催化剂的活性。 负载金属的混合金属氧化物催化剂特别适用于燃料处理系统与燃料电池相关的水煤气变换反应。