Selective catalytic reduction of nitrogen oxides
    2.
    发明授权
    Selective catalytic reduction of nitrogen oxides 失效
    氮氧化物的选择性催化还原

    公开(公告)号:US5552128A

    公开(公告)日:1996-09-03

    申请号:US410156

    申请日:1995-03-24

    摘要: There is provided a catalytic method for converting nitrogen oxides to nitrogen (i.e., N.sub.2). The catalyst for this method comprises an acidic solid component comprising a Group IVB metal oxide modified with an oxyanion of a Group VIB metal and further comprising at least one metal selected from the group consisting of Group IB, Group IVA, Group VB, Group VIIB, Group VIII, and mixtures thereof. An example of this catalyst is zirconia, modified with tungstate, and iron. This method may be used for reducing emissions of nitrogen oxides from waste gases, including industrial exhaust gases and automobile exhaust gases. In a particular embodiment, nitrogen oxides in waste gases may be reacted with ammonia before the waste gases are discharged to the atmosphere.

    摘要翻译: 提供了将氮氧化物转化为氮气(即N 2)的催化方法。 用于该方法的催化剂包括酸性固体组分,其包含用VIB族金属的氧阴离子改性的IVB族金属氧化物,并且还包含选自组IB,组IVA,组VB,组VIIB的至少一种金属, VIII族及其混合物。 该催化剂的实例是用钨酸盐和铁改性的氧化锆。 该方法可用于减少来自废气(包括工业废气和汽车废气)的氮氧化物的排放。 在一个具体实施方案中,废气中的氮氧化物可以在废气排放到大气中之前与氨反应。

    Production of nitrous oxide
    3.
    发明授权
    Production of nitrous oxide 失效
    生产一氧化二氮

    公开(公告)号:US06312657B1

    公开(公告)日:2001-11-06

    申请号:US09139227

    申请日:1998-08-25

    IPC分类号: C01B2126

    CPC分类号: B01J23/24 C01B21/22

    摘要: A process for producing nitrous oxide comprises reacting ammonia with nitric oxide and/or oxygen in the presence of a catalyst comprising a Group VIB metal oxide, to produce a reaction mixture comprising nitrous oxide, and optionally recovering the nitrous oxide from the effluent mixture.

    摘要翻译: 制备一氧化二氮的方法包括在包含第VIB族金属氧化物的催化剂的存在下使氨与一氧化氮和/或氧反应,以产生包含一氧化二氮的反应混合物,并任选地从流出物混合物中回收一氧化二氮。

    Process of using germanium zeolite catalyst for alkane aromatization
    9.
    发明授权
    Process of using germanium zeolite catalyst for alkane aromatization 有权
    使用锗沸石催化剂进行烷烃芳构化的工艺

    公开(公告)号:US08153852B2

    公开(公告)日:2012-04-10

    申请号:US12387179

    申请日:2009-04-29

    IPC分类号: C07C2/42

    CPC分类号: C07C2/76 C07C15/02

    摘要: This invention is for a catalyst for conversion of alkanes having two to six carbon atoms per molecule to aromatics. The catalyst is a MFI zeolite with a crystallite size of less than 15 microns with, in addition to silicon and aluminum, germanium as a framework element. Platinum is deposited on the zeolite. The zeolite may contain other optional tetravalent and trivalent elements in the zeolite framework. The catalyst is synthesized by preparing a zeolite containing aluminum, silicon, germanium and, optionally, other elements in the framework, calcining the zeolite and depositing platinum on the zeolite. The catalyst may be used for aromatization of alkanes, such as propane, to aromatics, such as benzene, toluene and xylenes.

    摘要翻译: 本发明是用于将每分子具有2-6个碳原子的烷烃转化成芳族化合物的催化剂。 催化剂是微晶尺寸小于15微米的MFI沸石,除了硅和铝之外,锗作为骨架元素。 铂沉积在沸石上。 沸石在沸石骨架中可以含有其它任选的四价和三价元素。 该催化剂是通过在骨架中制备含有铝,硅,锗和任选的其它元素的沸石来合成的,煅烧沸石并在沸石上沉积铂。 催化剂可用于烷烃如丙烷的芳构化成芳族化合物如苯,甲苯和二甲苯。