公开(公告)号：US06852666B1

公开(公告)日：2005-02-08

申请号：US09959785

申请日：2000-05-04

申请人： Christophe Bouly ,  Thierry Pontier ,  Christian Sarda ,  Christian Bert ,  Marc Guyon ,  Najat Moral ,  Thierry Birchem ,  Catherine Hedouin ,  Thierry Seguelong

发明人： Christophe Bouly ,  Thierry Pontier ,  Christian Sarda ,  Christian Bert ,  Marc Guyon ,  Najat Moral ,  Thierry Birchem ,  Catherine Hedouin ,  Thierry Seguelong

IPC分类号： B01D53/94 ,  B01J23/02 ,  B01J23/10 ,  B01J23/34 ,  B01J37/02 ,  B01J23/04 ,  B01J23/38

CPC分类号： B01D53/9422 ,  B01D53/9445 ,  B01D2255/2022 ,  B01D2255/2042 ,  B01D2255/206 ,  B01D2255/2073 ,  B01D2255/9022 ,  B01D2255/908 ,  B01J23/02 ,  B01J23/10 ,  B01J23/34 ,  B01J37/0244 ,  Y02T10/22

摘要： A composition for purifying exhaust gases of an internal combustion engine capable of consuming fuel with lean air-fuel ratios includes elements adsorbing the NOx present in the exhaust gases, in the presence of excess oxygen and releasing the adsorbed NOx when the oxygen concentration of the exhaust gases decreases. The NOx adsorbing element includes in combination: a first composition comprising a support and an active phase, the active phase being based on manganese and at least another element A selected among, alkalines and alkaline-earths, the manganese and element A being chemically bound; a second composition including a support and an active phase based on manganese and at least another element B selected among alkalines, alkaline-earths and rare earths, the second composition having or being capable of having a specific surface area of at least 80 m2/g after being calcined at 800° C., and furthermore, a reducing and/or three-way catalyst function is incorporated in the NOx adsorbing element.

摘要翻译： 用于净化具有贫空燃比的燃料的内燃机的废气的组合物包括在存在过量氧气的情况下吸附存在于废气中的NOx的元素，并且当排气的氧浓度排出时释放吸附的NOx 气体减少。 NOx吸附元件组合包括：包含载体和活性相的第一组合物，所述活性相基于锰和至少另一种选自碱金属和碱土金属的元素A，所述锰和元素A化学键合; 第二组合物，其包含基于锰的载体和活性相以及选自碱金属，碱土金属和稀土中的至少另一种元素B，所述第二组合物具有或能够具有至少80m 2的比表面积 在800℃下煅烧后，还原性和/或三元催化剂功能被并入NOx吸附元件中。

公开(公告)号：US06214306B1

公开(公告)日：2001-04-10

申请号：US08981871

申请日：1998-05-08

申请人： Maryline Aubert ,  Thierry Birchem ,  Gilbert Blanchard ,  Olivier Touret

发明人： Maryline Aubert ,  Thierry Birchem ,  Gilbert Blanchard ,  Olivier Touret

IPC分类号： B01J802

CPC分类号： B01D53/945 ,  B01D2255/206 ,  B01D2255/20715 ,  B01D2255/40 ,  B01J23/10 ,  C01G25/00 ,  C01G25/02 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2006/12 ,  C01P2006/80 ,  Y02A50/2324 ,  Y02T10/22

摘要： The invention relates to a composition based on zirconium oxide and comprising cerium oxide which has a specific surface of at least 30 m2/g after calcination for 6 hours at 900° C. and which is provided in the form of a pure solid solution of cerium oxide in zirconium oxide. According to another embodiment, this composition can additionally comprise a doping element and can exhibit a specific surface of at least 25 m2g after calcination for 6 hours at 1000° C. A process for the preparation of these compositions comprises the following stages: a mixture is prepared, in liquid medium, containing a zirconium compound and a cerium(IV) compound; the said mixture is heated at a temperature greater than 100° C.; the reaction mixture obtained on conclusion of the heating is brought to a basic pH; the precipitate thus obtained is recovered; the said precipitate is calcined; the doping element being, if appropriate, added either to the starting mixture in liquid medium or to the reaction mixture obtained on conclusion of the heating.

摘要翻译： 本发明涉及一种基于氧化锆的组合物，其包含氧化铈，其在900℃下煅烧6小时后具有至少30m 2 / g的比表面积，并以铈的纯固溶体的形式提供 氧化锆。 根据另一个实施方案，该组合物可另外包含掺杂元素，并且可以在1000℃下煅烧6小时后显示至少25m 2 g的比表面积。制备这些组合物的方法包括以下步骤：混合物 在含有锆化合物和铈（IV）化合物的液体介质中制备;将所述混合物在大于100℃的温度下加热;将在加热结束时获得的反应混合物达到碱性pH; 回收如此得到的沉淀物;煅烧所述沉淀物;如果合适，则将掺杂元素添加到液体介质中的起始混合物中或加热结束时得到的反应混合物。

公开(公告)号：US6136048A

公开(公告)日：2000-10-24

申请号：US68925

申请日：1998-11-19

申请人： Thierry Birchem ,  Pierre MacAudiere ,  Olivier Touret

发明人： Thierry Birchem ,  Pierre MacAudiere ,  Olivier Touret

IPC分类号： B01J13/00 ,  B01J23/10 ,  B01J23/76 ,  C01F17/00 ,  C01G3/00 ,  C01G25/00 ,  C01G45/00 ,  C01G49/00 ,  C10L1/10 ,  C10L1/30 ,  C10L10/02 ,  C10L10/06

CPC分类号： B82Y30/00 ,  B01J13/0004 ,  B01J23/10 ,  C01F17/0018 ,  C01F17/0043 ,  C01G25/00 ,  C01G3/00 ,  C01G45/00 ,  C01G49/0018 ,  C10L1/10 ,  C10L10/02 ,  C10L10/06 ,  C01P2002/85 ,  C01P2004/64

摘要： A method for processing soot containing one or more rare earths, wherein said soot is contacted with an oxygen-containing gas, is disclosed. The method comprises (a) preparing an aqueous phase comprising a dispersion of at least one oxygenated metal compound; (b) simultaneously or consecutively contacting a suspension from step (a) with an organic phase including at least one amphiphilic agent and preferably an organic mixture or compound as the solvent; and c recovering the organic phase. Said oxygenated metal compound is produced by means of a method according to which a solution including at least one soluble rare-earth salt, usually an acetate and/or a chloride, is prepared; the solution is contacted with a basic medium and the resulting reaction mixture is maintained at a basic pH; and the precipitate formed by atomization or freeze-drying is recovered. Said method is useful in inorganic synthesis and catalysis.

摘要翻译： PCT No.PCT / FR96 / 01852 Sec。 371日期：1998年11月19日 102（e）1998年11月19日PCT PCT 1996年11月22日PCT公布。 第WO97 / 19022号公报 日期1997年5月29日公开了一种用于处理含有一种或多种稀土的烟灰的方法，其中所述烟灰与含氧气体接触。 该方法包括（a）制备包含至少一种含氧金属化合物的分散体的水相; （b）同时或连续地将来自步骤（a）的悬浮液与包含至少一种两亲性试剂，优选有机混合物或化合物的有机相作为溶剂接触; 和+ E，crc c + EE回收有机相。 所述氧化金属化合物是通过制备包含至少一种可溶性稀土盐（通常为乙酸盐和/或氯化物）的溶液的方法生产的。 将溶液与碱性介质接触，并将所得反应混合物保持在碱性pH下; 回收通过雾化或冷冻干燥形成的沉淀物。 所述方法可用于无机合成和催化。

公开(公告)号：US06228799B1

公开(公告)日：2001-05-08

申请号：US09180716

申请日：1999-06-03

申请人： Maryline Aubert ,  Thierry Birchem ,  Gilbert Blanchard

发明人： Maryline Aubert ,  Thierry Birchem ,  Gilbert Blanchard

IPC分类号： B01J2300

CPC分类号： B01D53/945 ,  B01J23/10 ,  B01J35/002 ,  B01J35/1014 ,  B01J37/03 ,  C01G25/00 ,  C01G25/006 ,  C01P2006/12 ,  C07C17/15 ,  Y02A50/2324 ,  Y02T10/22

摘要： A composition based on cerium oxide and on zirconium oxide and, optionally, on a yttrium, scandium or rare-earth metal oxide. The cerium/zirconium atomic proportion is at least 1. The compound exhibits a specific surface, after calcination for 6 hours at 900° C. of at least 35 m2/g and an oxygen storage capacity at 400° C. of at least 1.5 ml of O2/g. The composition is prepared by mixing, in a liquid medium, a cerium compound, a zirconium compound and, if appropriate, a yttrium, scandium or rare-earth metal compound; heating and calcining the precipitate obtained; and using a zirconium solution having an amount of base necessary to reach the equivalent point during an acid/base titration of the solution having a molar ratio of OH−/Zr≦1.65. The composition thus obtained is used in the manufacture of multi-functional catalysts.

摘要翻译： 一种基于氧化铈和氧化锆和任选地在钇，钪或稀土金属氧化物上的组合物。 铈/锆原子比例至少为1.该化合物在900℃下煅烧6小时至少为35m 2 / g，在400℃下的储氧能力为至少1.5ml后显示出比表面积 的O2 / g。 组合物通过在液体介质中混合铈化合物，锆化合物和（如果合适的话）混合钇，钪或稀土金属化合物来制备; 加热煅烧得到的沉淀物; 并且在具有OH- / Zr <1.65的摩尔比的溶液的酸/碱滴定过程中，使用所需碱量达到相当点的锆溶液。 由此获得的组合物用于多功能催化剂的制造。