公开(公告)号：US20070037698A1

公开(公告)日：2007-02-15

申请号：US11203518

申请日：2005-08-12

申请人： Anthony Watkins ,  Jacqueline Schryer ,  Jerry Summers ,  Jeffrey Jordan ,  Bradley Leighty ,  Patricia Davis

发明人： Anthony Watkins ,  Jacqueline Schryer ,  Jerry Summers ,  Jeffrey Jordan ,  Bradley Leighty ,  Patricia Davis

IPC分类号： B01J21/00

CPC分类号： B01J23/8966 ,  B01J37/0219 ,  B01J37/036 ,  B01J37/038 ,  B01J37/16 ,  B01J37/34

摘要： A process for preparing an oxidation/reduction catalyst system includes providing a sol-gel precursor; providing a metal oxide wash coat mixture; and dispersing the sol-gel precursor in the metal oxide wash coat mixture to provide a dispersion of sol-gel precursor in metal oxide wash coat mixture. This dispersion of sol-gel precursor in metal oxide wash coat mixture is then deposited on a support, which is subsequently thermally-treated in an oxygen-containing environment to drive off volatiles and oxidize metallic components, thereby producing a thermally-treated support. Finally, a noble metal coating is applied to the thermally-treated support.

摘要翻译： 制备氧化/还原催化剂体系的方法包括提供溶胶 - 凝胶前体; 提供金属氧化物洗涤涂层混合物; 并将溶胶 - 凝胶前体分散在金属氧化物洗涤涂层混合物中以提供溶胶 - 凝胶前体在金属氧化物洗涤涂层混合物中的分散体。 然后将溶胶 - 凝胶前体在金属氧化物洗涤涂层混合物中的分散体沉积在载体上，随后在含氧环境中热处理以除去挥发物并氧化金属组分，从而产生热处理的载体。 最后，将贵金属涂层施加到热处理的支撑体上。

公开(公告)号：US20050079115A1

公开(公告)日：2005-04-14

申请号：US10956515

申请日：2004-09-28

申请人： Jeffrey Jordan ,  David Schryer ,  Patricia Davis ,  Bradley Leighty ,  Anthony Watkins ,  Jacqueline Schryer ,  Donald Oglesby ,  Suresh Gulati ,  Jerry Summers

发明人： Jeffrey Jordan ,  David Schryer ,  Patricia Davis ,  Bradley Leighty ,  Anthony Watkins ,  Jacqueline Schryer ,  Donald Oglesby ,  Suresh Gulati ,  Jerry Summers

IPC分类号： B01D53/94 ,  B01J23/62 ,  B01J23/63

CPC分类号： B01D53/9454 ,  B01J23/626 ,  B01J23/63 ,  Y02A50/2324 ,  Y02T10/22

摘要： The invention described herein involves a novel approach to the production of oxidation/reduction catalytic systems. The present invention serves to stabilize the tin oxide reducible metal-.oxide coating by co-incorporating at least another metal-oxide species, such as zirconium. In one embodiment, a third metal-oxide species is incorporated, selected from the group consisting of cerium, lanthanum, hafnium, and ruthenium. The incorporation of the additional metal oxide components serves to stabilize the active tin-oxide layer in the catalytic process during high-temperature operation in a reducing environment (e.g., automobile exhaust). Moreover, the additional metal oxides are active components due to their oxygen-retention capabilities. Together, these features provide a mechanism to extend the range of operation of the tin-oxide-based catalyst system for automotive applications, while maintaining the existing advantages.

摘要翻译： 本文描述的发明涉及生产氧化/还原催化体系的新方法。 本发明用于通过共同引入至少另一种金属氧化物物质如锆来稳定氧化锡可还原的金属 - 氧化物涂层。 在一个实施方案中，引入第三金属氧化物物质，其选自铈，镧，铪和钌。 另外的金属氧化物组分的引入用于在还原环境（例如，汽车排气）中的高温操作期间在催化过程中稳定活性氧化锡层。 此外，由于其保氧能力，附加的金属氧化物是活性组分。 这些特征一起提供了一种机制，以扩展用于汽车应用的氧化锡基催化剂体系的操作范围，同时保持现有的优点。