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    Vanadia catalyst impregnated on titania-pillared clay for the removal of nitrogen oxide
    1.
    发明授权
    Vanadia catalyst impregnated on titania-pillared clay for the removal of nitrogen oxide 有权
    浸渍在二氧化钛柱状粘土上的Vanadia催化剂用于除去氮氧化物

    公开(公告)号：US06475944B1

    公开(公告)日：2002-11-05

    申请号：US09535747

    申请日：2000-03-27

    申请人： Hee-Sung Yang ,  Seok-Lyong Song ,  Hyun-Chul Choi ,  In-Sik Nam ,  Ho-Jeong Chae

    发明人： Hee-Sung Yang ,  Seok-Lyong Song ,  Hyun-Chul Choi ,  In-Sik Nam ,  Ho-Jeong Chae

    IPC分类号： B01J2116

    CPC分类号： F01N3/2066 ,  B01D53/8628 ,  B01D53/9418 ,  B01D2251/2062 ,  B01D2255/2063 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01J29/049 ,  F01N2610/02 ,  Y02T10/24

    摘要： A catalyst for effectively removing NOx by using NH3 as a reducing agent is disclosed. Particularly, a vanadia impregnated onto Ti-PILC (titania-pillared interlayer clay) is disclosed, which is prepared by the generally known technology. More specifically, a V2O5/Ti-PILC catalyst is disclosed, in which NOx contained in the flue gas from an electric power plant and the like (an excessive amount of SO2 being present in the flue gas stream) is reacted with NH3 (which is injected as a reducing agent) over a vanadia impregnated onto a Ti-PILC, so that they can be converted into harmless nitrogen and water. The V2O5/Ti-PILC catalyst is employed for reducing NOx contained in the exhaust gas stream as well as the large amounts of SO2 into nitrogen and water. The catalyst is prepared by pillaring a titania to a clay by a pillaring method. The V2O5/Ti-PILC catalyst prepared in the present invention reveals a superior NO removal activity under dry and wet conditions compared with the commercial V2O5—WO3/TiO2 catalyst.

    摘要翻译： 公开了一种通过使用NH 3作为还原剂有效地除去NOx的催化剂。 特别地，公开了通过通常已知的技术制备的浸渍在Ti-PILC（二氧化钛柱状夹层粘土）上的氧化钒。 更具体地，公开了一种V2O5 / Ti-PILC催化剂，其中来自发电厂的烟道气中所含的NOx（烟道气中存在过量的SO 2）与NH 3（其是 作为还原剂注入）浸渍在Ti-PILC上的钒氧化物，使得它们可以转化成无害的氮和水。 V2O5 / Ti-PILC催化剂用于将废气流中所含的NOx以及大量的SO2还原成氮和水。 通过柱状法将二氧化钛作为粘土制成催化剂。 本发明制备的V2O5 / Ti-PILC催化剂与商业V2O5-WO3 / TiO2催化剂相比，在干湿条件下显示出优异的NO去除活性。

    Quantitative analysis of nitrogen oxides occluded in heterogeneous catalysis
    3.
    发明申请
    Quantitative analysis of nitrogen oxides occluded in heterogeneous catalysis 审中-公开
    在非均相催化中封闭的氮氧化物的定量分析

    公开(公告)号：US20060024836A1

    公开(公告)日：2006-02-02

    申请号：US11188937

    申请日：2005-07-25

    申请人： Jeong Ki Kil ,  In Sik Nam ,  Joo-Hyoung Park ,  Sang Jun Park

    发明人： Jeong Ki Kil ,  In Sik Nam ,  Joo-Hyoung Park ,  Sang Jun Park

    IPC分类号： G01N33/00

    CPC分类号： G01N31/224 ,  G01N33/0037 ,  Y02A50/245 ,  Y10T436/175383

    摘要： A method of performing quantitative analysis of nitrogen oxides occluded in heterogeneous catalysts, comprising the following steps, each performed in parallel for multiple samples: adsorption of nitrogen oxides by multiple samples using a batch adsorption apparatus, extraction of nitrogen oxides from the occluded samples using a solvent, reduction of nitrogen oxides to nitrite ions contained in the extract using hydrazine, and detection and quantification of nitrogen oxides by colorization using a modified Griess reagent. The method of the invention requires less time and expense as compared to the conventional method, wherein the process of serial adsorption, purge, desorption, and quantification is performed repeatedly to quantify the amount of nitrogen oxides adsorbed onto multiple samples. This method enables the efficient and reliable evaluation of nitrogen oxide adsorbing catalysts, which are commonly employed in automobiles for post-treatment of exhaust gases.

    摘要翻译： 一种对非均相催化剂中封入的氮氧化物进行定量分析的方法，包括以下步骤：对多个样品进行并行进行：使用间歇吸附装置吸附多个样品的氮氧化物，使用 溶剂，使用肼将提取物中所含的氮氧化物还原为亚硝酸根离子，并使用改性的Griess试剂通过着色来检测和定量氮氧化物。 与常规方法相比，本发明的方法需要更少的时间和费用，其中重复进行连续吸附，吹扫，解吸和定量的过程，以量化吸附到多个样品上的氮氧化物的量。 该方法能够高效可靠地评价通常用于汽车后处理废气的氮氧化物吸附催化剂。

    Zeolite catalyst and preparation process for NOx reduction
    9.
    发明授权
    Zeolite catalyst and preparation process for NOx reduction 有权
    沸石催化剂和NOx还原的制备方法

    公开(公告)号：US07049261B2

    公开(公告)日：2006-05-23

    申请号：US10723306

    申请日：2003-11-26

    申请人： In-Sik Nam ,  Sung Dae Yim ,  Joon Hyun Baik ,  Se Hyuck Oh ,  Byong Kwon Cho

    发明人： In-Sik Nam ,  Sung Dae Yim ,  Joon Hyun Baik ,  Se Hyuck Oh ,  Byong Kwon Cho

    IPC分类号： B01J29/06

    CPC分类号： B01D53/9418 ,  B01D53/8628 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2255/20761 ,  B01D2255/50 ,  B01J29/072 ,  B01J29/46 ,  B01J37/30

    摘要： A zeolite catalyst and a process for preparing a zeolite catalyst which is both capable of catalyzing the removal of nitrogen oxides from a gaseous medium across a broad temperature range and is operationally and hydrothermally stable at high reaction temperatures. The zeolite catalyst includes a zeolite carrier having a mole ratio of typically from about 14 to about 95 and copper ions supported on the zeolite carrier. The zeolite catalyst is prepared by providing a zeolite carrier, reacting copper with the zeolite carrier by carrying out an ion exchange reaction in a cupric salt aqueous solution at a temperature of between about 4° C. and room temperature (25° C.), and then drying and calcining the catalyst.

    摘要翻译： 沸石催化剂和制备沸石催化剂的方法，其能够催化在宽温度范围内从气态介质中除去氮氧化物，并且在高反应温度下可操作和水热稳定。 沸石催化剂包括摩尔比通常为约14至约95的沸石载体和负载在沸石载体上的铜离子。 通过提供沸石载体，通过在约4℃至室温（25℃）的温度下在铜盐水溶液中进行离子交换反应，使铜与沸石载体反应来制备沸石催化剂， 然后干燥和煅烧催化剂。

    V2O5-based catalyst for removing NOx from flue gas and preparing method therefor
    10.
    发明授权
    V2O5-based catalyst for removing NOx from flue gas and preparing method therefor 有权
    用于从烟道气中除去NOx的V2O5基催化剂及其制备方法

    公开(公告)号：US06380128B1

    公开(公告)日：2002-04-30

    申请号：US09452278

    申请日：1999-11-30

    申请人： Pyung Sam Ji ,  Hee Mun Eum ,  Jung Bin Lee ,  Dong Hwa Kim ,  In Young Lee ,  In Sik Nam ,  Sung Won Ham ,  Soo Tae Choo

    发明人： Pyung Sam Ji ,  Hee Mun Eum ,  Jung Bin Lee ,  Dong Hwa Kim ,  In Young Lee ,  In Sik Nam ,  Sung Won Ham ,  Soo Tae Choo

    IPC分类号： B01J2106

    CPC分类号： B01J21/063 ,  B01D53/8628 ,  B01J23/02 ,  B01J23/22 ,  B01J35/10 ,  B01J37/0236

    摘要： Disclosed are a catalyst for removing NOx from flue gas and its preparation. The catalyst comprises vanadium pentoxide, and barium oxide or calcium oxide as active components on a titanium dioxide support and is prepared by uniformly dispersing the metal oxides on the surface of the titanium dioxide support. This support is prepared by sufficiently drying and calcining a metatitanate (TiO(OH)2)-predominating slurry which is obtained from the course of the production of titanium dioxide for pigment from ilmenite. The catalyst exbihits excellent NOx removal activity as well as high durability against SO2, so that it can remove NOx for relatively longer period of time without being deteriorated by the poisoning induced by SO2 and significantly contribute to the prevention of plugging and corrosion of the downstream of a SCR reactor system.

    摘要翻译： 公开了一种从烟气中除去NOx的催化剂及其制备方法。 催化剂包含五氧化二钒，氧化钡或氧化钙作为二氧化钛载体上的活性组分，并通过将金属氧化物均匀分散在二氧化钛载体的表面上制备。 通过充分干燥和煅烧从钛铁矿的颜料生产二氧化钛的过程中获得的偏钛酸盐（TiO（OH）2） - 浆液制备该载体。 催化剂具有优异的NOx去除活性以及对SO2的高耐久性，因此可以在不会被SO2引起的中毒的情况下，将NOx除去较长的时间，而且可以有效地防止下游的堵塞和腐蚀 SCR反应器系统。