公开(公告)号：US20200047159A1

公开(公告)日：2020-02-13

申请号：US16056973

申请日：2018-08-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  Ming Yang ,  Gongshin Qi ,  Wei Li

IPC: B01J23/44 ,  B01J23/10 ,  B01J33/00 ,  B01J35/00 ,  B01D53/94

Abstract: Sinter-resistant catalyst systems include a catalytic substrate comprising a plurality of metal catalytic nanoparticles bound to a metal oxide catalyst support, and a coating of oxide nanoparticles disposed on the metal catalytic nanoparticles and optionally on the metal oxide support. The oxide nanoparticles comprise one or more lanthanum oxides and optionally one or more barium oxides, and additionally one or more oxides of aluminum, cerium, zirconium, titanium, silicon, magnesium, zinc, iron, strontium, and calcium. The metal catalytic nanoparticles can include ruthenium, rhodium, palladium, osmium, iridium, and platinum, rhenium, copper, silver, and/or gold. The metal oxide catalyst support can include one or more metal oxides selected from the group consisting of Al2O3, CeO2, ZrO2, TiO2, SiO2, La2O3, MgO, and ZnO. The coating of oxide nanoparticles is about 0.1% to about 50% lanthanum and barium oxides. The oxide nanoparticles can further include one or more oxides of magnesium and/or cobalt.

公开(公告)号：US20190234281A1

公开(公告)日：2019-08-01

申请号：US15881015

申请日：2018-01-26

Applicant: GM Global Technology Operations LLC

Inventor： Michelle H. Wiebenga ,  Shouxian Ren ,  Wei Li

IPC: F01N11/00 ,  F01N3/20 ,  F01N3/08 ,  F01N3/035 ,  G07C5/08 ,  B01D53/94 ,  B01D46/00

CPC classification number: F01N11/002 ,  B01D46/0027 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2255/904 ,  B01D2255/91 ,  B01D2279/30 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2570/14 ,  F01N2610/02 ,  G07C5/0825

Abstract: A method for monitoring and diagnosing an engine exhaust treatment of an internal combustion engine in a motor vehicle includes monitoring a nitrogen oxides (NOx) storage catalyst disposed in an engine exhaust stream downstream of the engine, determining a first diagnostic condition of the NOx storage catalyst based on data from a first EGT sensor and a second EGT sensor; determining a second diagnostic condition of the NOx storage catalyst based on a comparison of temperatures reported by a first NOx sensor and a second NOx sensor, selectively pausing the first diagnostic condition and the second diagnostic condition during a predetermined NOx storage catalyst regeneration period, and selectively generating a notification for an operator of the motor vehicle.

公开(公告)号：US20180214860A1

公开(公告)日：2018-08-02

申请号：US15419263

申请日：2017-01-30

Applicant: GM Global Technology Operations LLC

Inventor： Gongshin Qi ,  Se H. Oh ,  Ming Yang ,  Ryan J. Day ,  Wei Li

IPC: B01J37/10 ,  B01J23/42 ,  B01J23/44 ,  B01J21/04 ,  B01J35/10 ,  B01J37/08 ,  B01J37/02

CPC classification number: B01J37/10 ,  B01J21/04 ,  B01J23/42 ,  B01J23/44 ,  B01J35/0013 ,  B01J35/002 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1061 ,  B01J37/02 ,  B01J37/0207 ,  B01J37/08

Abstract: A method of stabilizing a catalyst system includes hydrothermally treating an aluminum oxide catalyst support having ≥about 95 volume % of γ-Al2O3 phase by heating to a temperature of about 800° C. to about 1,200° C. in the presence of water. A majority of the γ-Al2O3 is converted to a stable alumina phase selected from the group consisting of: θ-Al2O3, δ-Al2O3, and combinations thereof to form a stabilized porous aluminum oxide support having an average surface area of ≥about 50 m2/g to ≤about 150 m2/g. A platinum group metal is then bound to a surface of the stable porous aluminum oxide support to form the stabilized catalyst systems.

公开(公告)号：US09855547B2

公开(公告)日：2018-01-02

申请号：US15247230

申请日：2016-08-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin Qi ,  Se H. Oh ,  Wei Li

IPC: B01J21/04 ,  B01J21/06 ,  B01J23/10 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/63 ,  B01J37/02 ,  B01J37/08 ,  B01J37/12 ,  B01J35/04 ,  B01D53/94 ,  B01J35/00 ,  F01N3/28 ,  F01N3/10

CPC classification number: B01J23/44 ,  B01D53/944 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/2065 ,  B01D2255/2092 ,  B01D2255/9022 ,  B01J21/04 ,  B01J23/10 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/04 ,  F01N3/101 ,  F01N3/103 ,  F01N3/2828 ,  F01N2330/06 ,  F01N2370/00 ,  Y02A50/2341 ,  Y02T10/22

Abstract: An example of a catalytic converter includes a catalyst to improve low temperature oxidation of carbon monoxide (CO) and hydrocarbons. The catalyst includes a support, which includes a porous alumina structure and a rare earth metal oxide promoter impregnated into pores of the porous alumina structure. The rare earth metal oxide promoter is selected from the group consisting of CeO2 and CeO2—ZrO2. A platinum group metal (PGM) is bonded to the support.

公开(公告)号：US09597635B2

公开(公告)日：2017-03-21

申请号：US14559983

申请日：2014-12-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin Qi ,  Steven J. Schmieg ,  Shouxian Ren ,  Wei Li

IPC: B01D50/00 ,  B01D53/94 ,  B01J29/12 ,  F01N3/08 ,  F01N3/021 ,  F01N13/00

CPC classification number: B01D53/9431 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/944 ,  B01D53/9454 ,  B01D53/9477 ,  B01D53/9481 ,  B01D2255/102 ,  B01D2255/104 ,  B01D2255/2092 ,  B01D2255/50 ,  B01D2255/502 ,  B01D2255/504 ,  B01D2255/9032 ,  B01J29/068 ,  B01J29/072 ,  B01J29/126 ,  B01J29/70 ,  B01J35/04 ,  B01J37/0228 ,  B01J37/0244 ,  B01J37/0246 ,  B01J37/04 ,  B01J2229/186 ,  B01J2229/42 ,  F01N3/021 ,  F01N3/0814 ,  F01N3/0842 ,  F01N13/009 ,  F01N2510/063 ,  Y02T10/22

Abstract: An aftertreatment system utilizes chemical reactions to treat an exhaust gas flow. A device for use within an aftertreatment system includes a silver-based NOx storage catalyst and a zeolite. The silver-based NOx storage catalyst and the zeolite store NOx through a low temperature startup period of operation. In one embodiment, the zeolite includes a barium Y zeolite.

公开(公告)号：US08920756B2

公开(公告)日：2014-12-30

申请号：US13664749

申请日：2012-10-31

Applicant: GM Global Technology Operations LLC

Inventor： Calvin K. Koch ,  Gongshin Qi ,  Steven J. Schmieg ,  Wei Li

IPC: B01D53/56

CPC classification number: B01D53/9477 ,  B01D53/9431 ,  B01D53/944 ,  B01D2255/1021 ,  B01D2255/104 ,  B01D2255/2092 ,  B01D2255/91 ,  B01D2258/012 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/2066 ,  Y02A50/2325

Abstract: Ag/Al2O3 materials may be packaged in a suitable flow-through reactor, in combination with another material selected as a passive NOx adsorber material (PNA), both the silver material and the adsorber material being close coupled to the exhaust manifold of a diesel engine, and upstream of other catalytic devices, such as a diesel oxidation catalyst and a selective reduction catalyst for NOx. The silver catalyst material uses hydrogen in a cold-start engine exhaust and serves to oxidize NO to NO2 in the relatively low temperature, hydrocarbon-containing, exhaust during a short period following the engine cold start, and to temporarily store NOx during the start-up period. After the flowing exhaust gas stream has heated the PNA and the downstream catalytic devices, the silver yields its nitrogen oxides for conversion to nitrogen by the then-operating devices before NOx is discharged to the atmosphere.

Abstract translation: Ag / Al 2 O 3材料可以包装在合适的流通反应器中，与被选择为无源NO x吸附剂材料（PNA）的另一种材料组合，银材料和吸附剂材料都紧密耦合到柴油发动机的排气歧管 ，以及其它催化装置的上游，例如柴油氧化催化剂和用于NOx的选择性还原催化剂。 银催化剂材料在冷启动发动机排气中使用氢气，并且用于在发动机冷起动之后的短时间内在相对低温的含烃废气中将NO氧化为NO 2，并且在起动期间临时储存NOx， 上升期 在流动的废气流已经加热PNA和下游催化装置之后，在NOx排放到大气中之前，银产生其氮氧化物以便通过操作装置转化为氮气。