Selective catalytic reduction system and process using a pre-sulfated zirconia binder
    1.
    发明授权
    Selective catalytic reduction system and process using a pre-sulfated zirconia binder 有权
    选择性催化还原系统和使用预硫酸化氧化锆粘合剂的方法

    公开(公告)号:US07744840B2

    公开(公告)日:2010-06-29

    申请号:US12472633

    申请日:2009-05-27

    IPC分类号: B01D53/56 B01D53/74 G05D21/00

    摘要: A selective catalytic reduction (SCR) process with a palladium catalyst for reducing NOx in a gas, using hydrogen as a reducing agent is provided. The process comprises contacting the gas stream with a catalyst system, the catalyst system comprising (ZrO2)SO4, palladium, and a pre-sulfated zirconia binder. The inclusion of a pre-sulfated zirconia binder substantially increases the durability of a Pd-based SCR catalyst system. A system for implementing the disclosed process is further provided.

    摘要翻译: 提供了使用氢作为还原剂的用于还原NO x的钯催化剂的选择性催化还原(SCR)方法。 该方法包括使气流与催化剂体系接触,所述催化剂体系包含(ZrO 2)SO 4,钯和预硫酸化氧化锆粘合剂。 包含预硫酸化氧化锆粘合剂显着增加了Pd基SCR催化剂体系的耐久性。 还提供了用于实现所公开的处理的系统。

    SELECTIVE CATALYTIC REDUCTION SYSTEM AND PROCESS USING A PRE-SULFATED ZIRCONIA BINDER
    2.
    发明申请
    SELECTIVE CATALYTIC REDUCTION SYSTEM AND PROCESS USING A PRE-SULFATED ZIRCONIA BINDER 有权
    选择性催化还原系统和使用预硫化的ZIRCONIA BINDER的方法

    公开(公告)号:US20090285735A1

    公开(公告)日:2009-11-19

    申请号:US12472633

    申请日:2009-05-27

    IPC分类号: B01D53/94 B01D53/56

    摘要: A selective catalytic reduction (SCR) process with a palladium catalyst for reducing NOx in a gas, using hydrogen as a reducing agent is provided. The process comprises contacting the gas stream with a catalyst system, the catalyst system comprising (ZrO2)SO4, palladium, and a pre-sulfated zirconia binder. The inclusion of a pre-sulfated zirconia binder substantially increases the durability of a Pd-based SCR catalyst system. A system for implementing the disclosed process is further provided.

    摘要翻译: 提供了使用氢作为还原剂的用于还原NO x的钯催化剂的选择性催化还原(SCR)方法。 该方法包括使气流与催化剂体系接触,所述催化剂体系包含(ZrO 2)SO 4,钯和预硫酸化氧化锆粘合剂。 包含预硫酸化氧化锆粘合剂显着增加了Pd基SCR催化剂体系的耐久性。 还提供了用于实现所公开的处理的系统。

    Catalytic process for the decomposition of perfluoroalkanes
    5.
    发明授权
    Catalytic process for the decomposition of perfluoroalkanes 失效
    用于全氟烷烃分解的催化过程

    公开(公告)号:US06426443B1

    公开(公告)日:2002-07-30

    申请号:US09580889

    申请日:2000-05-30

    IPC分类号: A62D300

    摘要: A process and composition for transforming perfluoroalkanes in the presence of an oxidizing agent and water at temperatures between about 400 to 1,000° C. Aluminum oxide is the primary agent for effecting this transformation. Additions of between 0.1 to 50% by weight of other components such as barium calcium, phosphorus, cerium, chromium, cobalt, iron, lanthanum, magnesium, nickel, silicon, titanium, yttrium or zirconium aid in extending the useful life of the catalyst. A preferred catalyst composition includes aluminum oxide with additions of cobalt and one or more of the elements of cerium, titanium or zirconium.

    摘要翻译: 在氧化剂和水存在下,在约400至1000℃之间的温度下转化全氟烷烃的方法和组合物。氧化铝是用于实现该转化的主要试剂。 添加0.1至50重量%的其它组分如钡,磷,铈,铬,钴,铁,镧,镁,镍,硅,钛,钇或锆有助于延长催化剂的使用寿命。 优选的催化剂组合物包括添加钴和一种或多种铈,钛或锆元素的氧化铝。

    Process for the removal of ethylene oxide from air
    9.
    发明授权
    Process for the removal of ethylene oxide from air 有权
    从空气中除去环氧乙烷的方法

    公开(公告)号:US06837917B2

    公开(公告)日:2005-01-04

    申请号:US10443292

    申请日:2003-05-22

    IPC分类号: B01D53/02 B01D53/04

    CPC分类号: B01D53/02 Y10S95/902

    摘要: A process for removal of ethylene oxide (EO) from ambient air laden with EO is passed through a zeolite-based removal media, which preferrably consists of the acid form of zeolite ZSM-5, herein referred to as “H-ZSM-5.” The process described herein may be applied to many forms, configurations and uses, such as, for example, gas masks, fume hood ventilation filters, cartridge filters, etc. Preferably, the H-ZSM-5 is configured within an apparatus in such a manner that the stream containing EO is brought into sufficient contact with the zeolite to remove the EO from the airstream.

    摘要翻译: 从EO的环境空气中除去环氧乙烷(EO)的方法通过基于沸石的去除介质,其优选地由沸石ZSM-5的酸形式(在本文中称为“H-ZSM-5”)组成。 “ 本文描述的方法可以应用于许多形式,配置和用途,例如防毒面具,通风罩通风过滤器,筒式过滤器等。优选地,H-ZSM-5被配置在这样的装置内 使含有EO的物流与沸石充分接触以从气流中除去EO。

    Catalyst composition and method of controlling PFC and HFC emissions
    10.
    发明授权
    Catalyst composition and method of controlling PFC and HFC emissions 失效
    控制PFC和HFC排放的催化剂组成和方法

    公开(公告)号:US06676913B2

    公开(公告)日:2004-01-13

    申请号:US10103073

    申请日:2002-03-21

    申请人: Joseph A. Rossin

    发明人: Joseph A. Rossin

    IPC分类号: A62D300

    摘要: The present invention relates to a catalytic process for the destruction of PFC's and HFC's using a catalyst which comprises aluminum oxide that has preferably been stabilized through the addition of a stabilizing agent (such as, titanium, zirconium, or cobalt, or mixtures of these elements). The addition of these elements to the aluminum oxide unexpectedly enhances the catalyst's stability without significantly altering its reactivity. The total amount of stabilizing agent added to the catalyst can be as low as 0.005 parts (by weight) stabilizing agent per part (by weight) aluminum oxide (Al2O3) or as great as 2 or more parts (by weight) stabilizing agent per part (by weight) aluminum oxide; so long as there is sufficient aluminum oxide available to effectively catalyze the destruction of the target PFC's and/or HFC's. An oxidizing agent, such as, for example, platinum, palladium, rhodium, iridium, silver, nickel, copper, iron, vanadium, and/or cerium, may be added to the catalyst to effectively convert any carbon monoxide to carbon dioxide.

    摘要翻译: 本发明涉及使用催化剂破坏PFC和HFC的催化方法,所述催化剂包括优选通过加入稳定剂(例如钛,锆或钴或这些元素的混合物)来稳定的氧化铝 )。 将这些元素添加到氧化铝中意外地提高了催化剂的稳定性,而没有显着改变其反应性。 添加到催化剂中的稳定剂的总量可以低至0.005份(重量)稳定剂,每份(重量)氧化铝(Al 2 O 3)或大于2份或更多份(重量)稳定剂每份 (重量比)氧化铝; 只要有足够的氧化铝可以有效地催化目标PFC和/或HFC的破坏。 可以向催化剂中加入氧化剂,例如铂,钯,铑,铱,银,镍,铜,铁,钒和/或铈,以有效地将任何一氧化碳转化为二氧化碳。