Selective catalytic reduction of N2O
    1.
    发明授权
    Selective catalytic reduction of N2O 有权
    N2O的选择性催化还原

    公开(公告)号:US07951742B2

    公开(公告)日:2011-05-31

    申请号:US12208569

    申请日:2008-09-11

    IPC分类号: B01J29/06

    摘要: A gas stream containing nitrous oxide and ammonia is contacted with a catalyst composition containing a zeolite. N2O is reduced to N2 and H2O at low temperatures in a highly efficient manner. Ammonia-mediated reduction of nitrous oxide can be effectuated from gas streams having N2O concentrations as low as 1%. The gas stream may also contact a catalytic composition selective for the reduction of NOx. In this way, N2O and NOx treatment may be effectuated in a single process stream.

    摘要翻译: 含有一氧化二氮和氨的气流与含有沸石的催化剂组合物接触。 N2O在低温下以高效率的方式还原成N2和H2O。 氨介导的一氧化二氮的还原可以从具有低至1%的N 2 O浓度的气流中实现。 气流还可以选择性地接触用于还原NOx的催化剂组合物。 以这种方式,N2O和NOx处理可以在单个工艺流中实现。

    Layered ammonia oxidation catalyst
    4.
    发明申请
    Layered ammonia oxidation catalyst 有权
    分层氨氧化催化剂

    公开(公告)号:US20050054524A1

    公开(公告)日:2005-03-10

    申请号:US10659159

    申请日:2003-09-10

    摘要: The invention pertains to a layered ammonia oxidation catalyst. The layered catalyst causes ammonia to be selectively oxidized in the presence of an oxidant such as air, while minimizing the formation of nitrogen oxides (NOx). The layered catalyst comprises a refractory oxide support such as gamma alumina upon which a platinum component is deposited and a vanadia component is deposited on the platinum. The catalyst is preferably disposed on a substrate such as a metal foil whose surface contains a “herringbone” pattern.

    摘要翻译: 本发明涉及层状氨氧化催化剂。 层状催化剂在氧化剂例如空气的存在下使氨选择性氧化,同时最小化氮氧化物(NOx)的形成。 层状催化剂包括耐火氧化物载体,例如γ氧化铝,在其上沉积铂组分,并且在铂上沉积氧化钒组分。 催化剂优选设置在表面包含“人字形”图案的金属箔等基板上。

    Manganese-based oxidation catalyst
    9.
    发明申请
    Manganese-based oxidation catalyst 有权
    锰系氧化催化剂

    公开(公告)号:US20050147550A1

    公开(公告)日:2005-07-07

    申请号:US10752260

    申请日:2004-01-06

    摘要: A catalyst for the oxidation of volatile organic compounds and carbon monoxide comprising manganese and alumina, such catalyst having been impregnated with a phosphorus compound. The presence of the phosphorus compound results in a significant oxidative conversion of both the volatile organic compounds and the carbon monoxide. The catalyst is especially useful for treating gaseous streams that emanate from industrial sources, such as wood pulp manufacturing plants. The manganese portion of the catalyst is preferably comprised of manganese compounds comprising a defect non-stoichiometric manganese oxide of the type β-Mn3O4+x, wherein x has the value of 0.1≦x≦0.25 in respect to about 80 to about 95% of all manganese atoms, and manganese aluminate in respect to the balance of the manganese atoms. The alumina portion of the catalyst is preferably comprised of high temperature forms of alumina of the type comprising α-Al2O3 and (α+δ+θ)-Al2O3.

    摘要翻译: 用于氧化包含锰和氧化铝的挥发性有机化合物和一氧化碳的催化剂,这种催化剂已经用磷化合物浸渍。 磷化合物的存在导致挥发性有机化合物和一氧化碳的显着氧化转化。 催化剂特别适用于处理从工业来源产生的气流,如木浆制造厂。 催化剂的锰部分优选包含锰化合物,其包含类型为β-Mn 3 O 4 + x N的缺陷非化学计量的氧化锰,其中x具有 相对于锰原子的平衡,相对于约80至约95%的所有锰原子,0.1 <= x <= 0.25的值和铝酸锰。 催化剂的氧化铝部分优选由包含α-Al 2 O 3 3和(α+δ+θ)3 Al 3+的类型的高温形式的氧化铝组成, SUB> 2 3。