公开(公告)号：US20170001172A1

公开(公告)日：2017-01-05

申请号：US15106480

申请日：2014-12-23

Applicant: RHODIA OPERATIONS

Inventor： Qiang ZHAO ,  Olivier LARCHER ,  Barry W. L. SOUTHWARD ,  Francis FRANCIS ,  Thomas ENGLISH ,  Fabien OCAMPO

IPC: B01J23/10 ,  B01J35/00 ,  B01D53/94 ,  B01J37/04 ,  B01J37/08 ,  B01J23/40 ,  B01J35/10

Abstract: 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.

Abstract translation: 本教导涉及包括Al 2 O 3，CeO 2以及MgO和Pr 6 O 11中的至少一种的无机氧化物材料。 本发明还涉及具有负载在这些无机氧化物材料上的至少一种贵金属的催化剂，以及使用这种催化剂处理来自内燃机的废气的方法。

公开(公告)号：US20170001173A1

公开(公告)日：2017-01-05

申请号：US15106486

申请日：2014-12-23

Applicant: RHODIA OPERATIONS

Inventor： Qiang ZHAO ,  Barry W. L. SOUTHWARD ,  Francis FRANCIS ,  Fabien OCAMPO

IPC: B01J23/10 ,  B01D53/94 ,  B01J37/03 ,  B01J37/08 ,  B01J35/10 ,  B01J37/04

CPC classification number: B01J23/10 ,  B01D53/94 ,  B01J35/1014 ,  B01J35/1038 ,  B01J37/0045 ,  B01J37/031 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  B01J2523/00 ,  C01B13/363 ,  C01G25/006 ,  C01P2002/60 ,  C01P2004/61 ,  C01P2006/13 ,  C01P2006/14 ,  C04B35/111 ,  C04B35/117 ,  C04B35/119 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3244 ,  B01J2523/31 ,  B01J2523/36 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/3706

Abstract: 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.

Abstract translation: 本文描述了形成无机复合氧化物的方法。 这样的方法包括在至少约5分钟的时间内以约5至约6.75的基本恒定的pH组合酸性前体组合物和碱性组合物以形成沉淀组合物，其中酸性前体组合物包含氧化铝前体 ，二氧化铈前体，氧化锆前体和任选的一种或多种掺杂剂前体; 通过将沉淀组合物的pH增加至约8至约10，稳定沉淀物; 并煅烧稳定的沉淀物以形成无机复合氧化物。 还描述了使用这种方法形成的无机复合氧化物。