公开(公告)号：US20230191325A1

公开(公告)日：2023-06-22

申请号：US17914874

申请日：2021-03-29

Applicant: Topsoe A/S

Inventor： Janus Emil Münster-Swendsen

IPC: B01D53/86 ,  B01J23/00 ,  B01J23/78 ,  B01J29/76 ,  B01J23/22 ,  B01J35/04

CPC classification number: B01D53/869 ,  B01D53/8628 ,  B01D53/8634 ,  B01J23/005 ,  B01J23/22 ,  B01J23/78 ,  B01J29/7615 ,  B01J35/04 ,  B01D2255/202 ,  B01D2255/502 ,  B01D2255/902 ,  B01D2255/904 ,  B01D2255/2022 ,  B01D2255/2027 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20746

Abstract: Process for the removal of NOx (NO, NO2) and nitrous oxide (N2O) contained in a process off-gas comprising the steps of (a) adding an amount of a NOx reducing agent into the process off-gas;(b) in a first stage passing the process off-gas admixed with the reducing agent through a catalyst active in selective catalytic reduction of NOx with the reducing agent and providing an effluent gas comprising the nitrous oxide and residual amounts of reducing agent; and(c) in a second stage passing the effluent gas through a catalyst comprising a cobalt compound and being active in decomposition of nitrous oxide and oxidation of the residual amounts of the reducing agent.

公开(公告)号：US20180318763A1

公开(公告)日：2018-11-08

申请号：US15770267

申请日：2016-10-28

Applicant: Umicore AG & Co. KG

Inventor： Maximilian A. Biberger ,  Bryant Kearl ,  Qinghua Yin ,  Xiwang Qi

IPC: B01D53/94 ,  B01J20/18 ,  F01N3/08

CPC classification number: B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2065 ,  B01D2255/50 ,  B01D2255/9025 ,  B01D2255/91 ,  B01J20/18 ,  B01J20/205 ,  B01J20/28007 ,  B01J20/3238 ,  B01J20/3295 ,  F01N3/0814 ,  F01N3/0842

Abstract: The present disclosure relates to a substrate containing passive NOx adsorption (PNA) materials for treatment of gases, and washcoats for use in preparing such a substrate. Also provided are methods of preparation of the PNA materials, as well as methods of preparation of the substrate containing the PNA materials. More specifically, the present disclosure relates to a coated substrate containing PNA materials for PNA systems, useful in the treatment of exhaust gases. Also disclosed are exhaust treatment systems, and vehicles, such as diesel or gasoline vehicles, particularly light-duty diesel or gasoline vehicles, using catalytic converters and exhaust treatment systems using the coated substrates.

公开(公告)号：US20180021725A1

公开(公告)日：2018-01-25

申请号：US15721139

申请日：2017-09-29

Applicant: BATTELLE MEMORIAL INSTITUTE

Inventor： Charles H. F. Peden ,  Feng Gao ,  Yilin Wang ,  Marton Kollar ,  Janos Szanyi

IPC: B01D53/86 ,  B01D53/94 ,  B01J37/08 ,  B01J37/02 ,  B01J29/76

CPC classification number: B01D53/8628 ,  B01D53/9418 ,  B01D2251/2062 ,  B01D2255/202 ,  B01D2255/2022 ,  B01D2255/2025 ,  B01D2255/2027 ,  B01D2255/204 ,  B01D2255/2042 ,  B01D2255/2045 ,  B01D2255/2047 ,  B01D2255/20761 ,  B01D2255/50 ,  B01J29/763 ,  B01J37/0246 ,  B01J37/08 ,  B01J2229/183 ,  B01J2229/186 ,  Y02A50/2325 ,  Y02C20/10

Abstract: Cu-exchanged zeolite catalysts with a chabazite structure containing selected concentrations of alkali ions or alkaline-earth ions and a lower concentration of (Cu) ions are described and a sequential process for making. Catalysts of the present invention reduce light-off temperatures providing enhanced low-temperature conversion of NOx gases. Catalysts of the present invention also exhibit high selectivity values compared to conventional NOx reduction catalysts.

公开(公告)号：US20170333826A1

公开(公告)日：2017-11-23

申请号：US15525498

申请日：2015-11-10

Applicant: Stichting Energieonderzoek Centrum Nederland

Inventor： Hendricus Adrianus Johannes VAN DIJK ,  Paul Dean COBDEN ,  Stéphane WALSPURGER

IPC: B01D53/02 ,  B01D53/52 ,  B01D53/86 ,  B01J20/34 ,  B01D53/62 ,  C01B17/04 ,  B01J20/08

CPC classification number: B01D53/02 ,  B01D53/526 ,  B01D53/62 ,  B01D53/8603 ,  B01D2251/30 ,  B01D2253/104 ,  B01D2253/25 ,  B01D2255/202 ,  B01D2255/2022 ,  B01D2255/2092 ,  B01D2257/30 ,  B01D2257/304 ,  B01D2257/308 ,  B01D2257/504 ,  B01D2258/05 ,  B01D2259/40086 ,  B01J20/08 ,  B01J20/3466 ,  C01B17/0404 ,  Y02C10/04 ,  Y02C10/08 ,  Y02P20/152

Abstract: A process for altering the composition of a feed gas containing H2S equivalents is disclosed. The process comprises (a) contacting the feed gas with a solid adsorbent at a temperature of 250-500° C., to obtain a loaded adsorbent, (b) purging the loaded adsorbent with a purge gas comprising steam, thus producing a product stream which typically contains substantially equal levels of CO2 and H2S. The process further comprises a step (c) of regenerating the purged adsorbent by removal of water. The adsorbent comprises alumina and one or more alkali metals, such as potassium oxides, hydroxide or the like.

公开(公告)号：US20170284247A1

公开(公告)日：2017-10-05

申请号：US15473007

申请日：2017-03-29

Applicant: Johnson Matthey Public Limited Company

Inventor： Satoshi KADOYA ,  Daisuke YOKOTA

IPC: F01N3/035 ,  B01D53/94 ,  F01N3/022 ,  B01J23/44 ,  B01J35/04 ,  B01D46/24 ,  B01J21/04

CPC classification number: F01N3/035 ,  B01D46/2418 ,  B01D53/944 ,  B01D53/9454 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/1026 ,  B01D2255/104 ,  B01D2255/202 ,  B01D2255/2022 ,  B01D2255/2027 ,  B01D2255/204 ,  B01D2255/2042 ,  B01D2255/2045 ,  B01D2255/2047 ,  B01D2255/206 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/20738 ,  B01D2255/20792 ,  B01D2255/2092 ,  B01D2255/908 ,  B01D2255/9155 ,  B01D2255/9202 ,  B01D2255/9205 ,  B01J21/04 ,  B01J23/44 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0219 ,  F01N3/021 ,  F01N3/0222 ,  F01N2330/06 ,  F01N2510/0682 ,  Y02T10/22

Abstract: [Summary][Problem]The problem addressed by the present invention lies in providing an exhaust gas purification filter which can efficiently treat particulate matter in exhaust gas.[Solution]The present invention provides an exhaust gas purification filter including a substrate comprising a plurality of porous partitions, wherein the partitions form an exhaust gas flow path, a porous catalytic layer is provided on the partitions and the catalytic layer having a thickness of 10 μm or greater is provided over at least 20% of the total length of the partitions in the lengthwise direction thereof, and the catalytic layer having a thickness of 10 μm or greater is not present on the partitions 15 mm from an outflow side.

公开(公告)号：US20170218809A1

公开(公告)日：2017-08-03

申请号：US15328658

申请日：2015-08-12

Applicant: UMICORE AG & CO. KG

Inventor： Ruediger HOYER ,  Thomas UTSCHIG ,  Michael SCHIFFER ,  Michael SEYLER ,  Frank-Walter SCHUETZE

IPC: F01N3/08 ,  B01J23/44 ,  B01J23/10 ,  B01J23/46 ,  F01N3/20 ,  B01J29/76 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01D53/94 ,  B01J23/02

CPC classification number: F01N3/0814 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2042 ,  B01D2255/2047 ,  B01D2255/2065 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9022 ,  B01D2255/91 ,  B01D2258/012 ,  B01J23/02 ,  B01J23/10 ,  B01J23/44 ,  B01J23/464 ,  B01J23/63 ,  B01J29/763 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0244 ,  B01J37/0246 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/281 ,  F01N3/2828 ,  F01N13/009 ,  F01N2330/06 ,  F01N2370/02 ,  F01N2510/063 ,  Y02A50/2325 ,  Y02T10/24

Abstract: The invention relates to a catalyst system for reducing nitrogen oxides, which comprises a nitrogen oxide storage catalyst and an SCR catalyst, wherein the nitrogen oxide storage catalyst consists of at least two catalytically active washcoat layers on a supporting body, wherein a lower washcoat layer A contains cerium oxide, an alkaline earth compound and/or alkali compound, as well as platinum and palladium, and an upper washcoat layer B, which is arranged over the washcoat layer A, contains cerium oxide, platinum and palladium, and no alkali compound and no alkaline earth compound. The invention also relates to a method for converting NOx in exhaust gases of motor vehicles that are operated by means of engines that are operated in a lean manner.

公开(公告)号：US09045342B2

公开(公告)日：2015-06-02

申请号：US14343092

申请日：2012-09-27

Applicant: Haldor Topsøe A/S

Inventor： Mads Lykke

IPC: C01B17/76 ,  C01B17/80 ,  C01B17/765 ,  B01D53/86 ,  B01D53/50

CPC classification number: C01B17/765 ,  B01D53/501 ,  B01D53/8609 ,  B01D2255/202 ,  B01D2255/20723 ,  B01D2258/0283 ,  C01B17/7655 ,  C01B17/80

Abstract: The invention relates to a process for oxidation of SO2 to SO3 comprising the steps of (a) directing a stream of feed gas comprising SO2 and O2 to a catalytically active material, (b) oxidizing an amount of said SO2 in said process gas to SO3 in the presence of the catalytically active material, providing a first oxidized process gas, (c) reacting SO3 with water, (d) condensing H2SO4, (e) withdrawing a first desulphurized process gas and a first stream of sulphuric acid, (f) from the desulphurized process gas withdrawing a recycle stream of desulphurized process gas, wherein the recycle stream is added to said stream of feed gas or said first oxidized process gas with the associated benefit of reducing the molar flow of process gas downstream withdrawal of the recycle stream and upstream the mixing point.

Abstract translation: 本发明涉及一种将SO 2氧化成SO 3的方法，包括以下步骤：（a）将包含SO 2和O 2的进料气流引导至催化活性材料，（b）将所述工艺气体中的所述SO 2的量氧化为SO 3 在催化活性材料的存在下，提供第一氧化工艺气体，（c）使SO 3与水反应，（d）冷凝H 2 SO 4，（e）回收第一脱硫工艺气体和第一硫酸流，（f） 从脱硫工艺中抽出脱硫工艺气体的再循环流，其中将再循环流加入到所述进料气体流或所述第一氧化工艺气体中，具有降低处理气体下游回收再循环流的摩尔流量的优点 并在混合点上游。

公开(公告)号：US08992844B2

公开(公告)日：2015-03-31

申请号：US13821520

申请日：2012-03-06

Applicant: Tetsuro Naito ,  Yasunari Hanaki ,  Masanori Nakamura ,  Masato Nagata

Inventor： Tetsuro Naito ,  Yasunari Hanaki ,  Masanori Nakamura ,  Masato Nagata

IPC: B01D50/00 ,  B01D53/94 ,  B01J23/58 ,  B01J23/63 ,  F01N3/08

CPC classification number: B01D53/9413 ,  B01D53/9422 ,  B01D53/9431 ,  B01D53/944 ,  B01D53/9445 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/202 ,  B01D2255/2022 ,  B01D2255/2027 ,  B01D2255/2042 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/91 ,  B01J23/58 ,  B01J23/63 ,  F01N3/0842 ,  F01N2370/00 ,  Y02T10/22

Abstract: A lean NOx trap type exhaust gas purifying catalyst having a catalyst noble metal selected from a group consisting of platinum, palladium and rhodium, an inorganic oxide that carries the catalyst noble metal, and at least one NOx adsorbent one selected from a group of magnesium, barium, sodium, potassium and cesium. The inorganic oxide carrying palladium containing cerium in a CeO2-equivalent quantity in a range of 1 to 20 wt %, and at least one of aluminum and zirconium.

Abstract translation: 一种具有选自铂，钯和铑的催化剂贵金属，载有催化剂贵金属的无机氧化物和至少一种选自一组镁， 钡，钠，钾和铯。 含有CeO 2当量的含有铈的铈的无机氧化物在1〜20重量％的范围内，以及铝和锆中的至少一种。

公开(公告)号：US08496899B2

公开(公告)日：2013-07-30

申请号：US12524352

申请日：2008-01-25

Applicant: Hiroto Imai

Inventor： Hiroto Imai

IPC: B01D53/56 ,  B01D53/86 ,  B01J8/00 ,  B01J23/00 ,  B01J21/00 ,  B01J20/00 ,  C01B21/00

CPC classification number: B01J37/0244 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/20715 ,  B01D2255/91 ,  B01J21/066 ,  B01J23/58 ,  B01J23/63 ,  B01J35/0006 ,  B01J37/0242 ,  Y02T10/22

Abstract: An exhaust gas purifying catalyst 1 has a catalyst substrate 3 and catalyst coating layers 5, 7 that are formed on the catalyst substrate 3 and contain (a) Rh, (b) Pt, (c) an alkali metal or alkaline earth element, and (d) an inorganic oxide. The catalyst coating layers 5, 7 has a layered structure including an inside layer 5 where the component (a) is substantially locally existing, and an outside layer 7 where the component (b) is substantially locally existing. The inside layer 5 also contains a zirconia oxide.

Abstract translation: 废气净化催化剂1具有形成在催化剂基板3上并含有（a）Rh，（b）Pt，（c）碱金属或碱土金属元素的催化剂基板3和催化剂涂层5,7，以及 （d）无机氧化物。 催化剂涂层层5,7具有层状结构，其中组分（a）基本上局部存在的内层5和组分（b）基本上局部存在的外层7。 内层5也含有氧化锆。

公开(公告)号：US20130022512A1

公开(公告)日：2013-01-24

申请号：US13255774

申请日：2010-03-15

Applicant: Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

Inventor： Yuki Bisaiji ,  Kohei Yoshida ,  Mikio Inoue

IPC: F01N3/20

CPC classification number: F01N3/2033 ,  B01D53/9431 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/206 ,  B01D2255/91 ,  B01D2258/012 ,  F01N3/0814 ,  F01N3/0885 ,  F01N3/106 ,  Y02T10/26

Abstract: In an internal combustion engine, inside of an engine exhaust passage in order from an upstream side, a hydrocarbon feed valve, oxidation catalyst, and exhaust purification catalyst are arranged. On the exhaust purification catalyst, platinum and rhodium are carried and a basic layer is formed. Hydrocarbons are intermittently fed from the hydrocarbon feed valve while maintaining the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst lean. At this time, the feed of hydrocarbons is controlled so as to ensure the continued presence of the reducing intermediate on the basic layer.

Abstract translation: 在内燃机中，从上游侧开始发动机排气通道内部，配置有碳氢化合物供给阀，氧化催化剂和排气净化催化剂。 在排气净化催化剂上，携带铂和铑，形成碱性层。 从烃供给阀间歇地供给碳氢化合物，同时保持流入排气净化催化剂的排气的空燃比变少。 此时，控制碳氢化合物的进料以确保还原中间体在碱性层上的继续存在。