公开(公告)号：US11154840B2

公开(公告)日：2021-10-26

申请号：US15106480

申请日：2014-12-23

申请人： RHODIA OPERATIONS

发明人： Qiang Zhao ,  Olivier Larcher ,  Barry W. L. Southward ,  Francis Francis ,  Thomas English ,  Fabien Ocampo

IPC分类号： C01F7/14 ,  C01F17/235 ,  C01F5/02 ,  B01J23/10 ,  B01D53/94 ,  B01J35/10 ,  B01J23/00 ,  B01J23/63 ,  B01J23/40 ,  B01J37/04 ,  B01J37/08 ,  B01J37/03 ,  B01J37/00 ,  B01J35/00

摘要： The present teachings are directed to inorganic oxide materials that include Al2O3, CeO2, and at least one of MgO and Pr6O11. The present teachings are also directed to catalysts having at least one noble metal supported on these inorganic oxide materials, as well as methods for treating exhaust gases from internal combustion engines using such catalysts.

公开(公告)号：US10239045B2

公开(公告)日：2019-03-26

申请号：US15106486

申请日：2014-12-23

申请人： RHODIA OPERATIONS

发明人： Qiang Zhao ,  Barry W. L. Southward ,  Francis Francis ,  Fabien Ocampo

IPC分类号： B01D53/94 ,  B01J23/10 ,  B01J35/10 ,  B01J37/00 ,  B01J37/03 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  C01B13/36 ,  C01G25/00 ,  C04B35/111 ,  C04B35/117 ,  C04B35/119

摘要： Described herein are methods for forming inorganic composite oxides. Such methods include combining, at a substantially constant pH of between about 5 and about 6.75 over a period of at least about 5 minutes, an acidic precursor composition and a basic composition to form a precipitate composition, wherein the acidic precursor composition comprises an alumina precursor, a ceria precursor, a zirconia precursor and optionally one or more dopant precursors; stabilizing the precipitate by increasing the pH of the precipitate composition to between about 8 and about 10; and calcining the stabilized precipitate to form an inorganic composite oxide. Also described are inorganic composite oxides formed using such methods.