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    Solid acid catalyst of acid-treated hydrated niobium oxide and method for its preparation
    4.
    发明授权
    Solid acid catalyst of acid-treated hydrated niobium oxide and method for its preparation 失效
    酸处理水合氧化铌的固体酸催化剂及其制备方法

    公开(公告)号：US4652544A

    公开(公告)日：1987-03-24

    申请号：US767982

    申请日：1985-08-21

    申请人： Susumu Okazaki ,  Tokio Iizuka ,  Satoshi Kado

    发明人： Susumu Okazaki ,  Tokio Iizuka ,  Satoshi Kado

    IPC分类号： B01J27/195 ,  C07B61/00 ,  C07C27/00 ,  C07C29/04 ,  C07C31/08 ,  C07C67/00 ,  B01J27/14

    CPC分类号： C07C29/04 ,  B01J27/195

    摘要： A solid state catalyst consists essentially of hydrated niobium oxide containing a phosphoric acid on its surface in an amount sufficient to increase surface acidity, to inhibit crystallization of the niobium oxide and to retard loss in catalytic activity following exposure to high temperature. The catalyst can be prepared by treating hydrated niobium oxide (Nb.sub.2 O.sub.5.xH.sub.2 O) or an anhydride thereof with a phosphoric acid. The catalyst is useful in the hydration of ethylene to form ethanol.

    摘要翻译： 固态催化剂基本上由含有磷酸的水合铌氧化物组成，其表面的量足以增加表面酸度，抑制氧化铌的结晶，并延缓暴露于高温后催化活性的损失。 催化剂可以通过用磷酸处理水合氧化铌（Nb 2 O 5·xH 2 O）或其酸酐来制备。 该催化剂可用于乙烯水合形成乙醇。

    Surface treatment of a weather-resistant steel
    5.
    发明授权
    Surface treatment of a weather-resistant steel 失效
    表面处理耐候钢

    公开(公告)号：US3954511A

    公开(公告)日：1976-05-04

    申请号：US521875

    申请日：1974-11-07

    申请人： Satoshi Kado ,  Tsuneyasu Watanabe ,  Kazuhiro Masuda

    发明人： Satoshi Kado ,  Tsuneyasu Watanabe ,  Kazuhiro Masuda

    IPC分类号： C23C22/02 ,  B32B15/08 ,  C08K3/00 ,  C08K3/32 ,  C23C22/03 ,  C23F7/10

    CPC分类号： C08K3/0075 ,  C08K3/08 ,  C08K3/10 ,  C08K3/22 ,  C08K3/32

    摘要： Surface treatment of weather-resistant steel by applying a liquid composition comprising 5 to 50% of Fe.sub.3 O.sub.4 + Fe.sub.2 O.sub.3, 0.01 to 5% of phosphoric acid, 0.01 to 10% of at least one selected from the consisting of Pb, Ni, Cu, P, Zn, Cr and their compounds, 3 to 30% of butyral resin, the balance being solvent by spraying or brushing. The surface treatment is effective for preventing the occurence of the initial rust formation of the steel and promoting a stable and dense protective rust against subsequent corrosion of the steel.

    摘要翻译： 通过应用包含5〜50％的Fe 3 O 4 + Fe 2 O 3，0.01〜5％的磷酸，0.01〜10％的选自Pb，Ni，Cu，P的至少一种的液体组合物进行耐候性钢的表面处理 ，Zn，Cr及其化合物，3-30％丁缩醛树脂，其余为溶剂，喷雾或刷涂。 表面处理对于防止钢的初始生锈的发生是有效的，并且促进对钢的后续腐蚀的稳定和致密的保护性锈蚀。

    Austenitic heat-resistant steel which forms Al.sub.2 O.sub.3 film in high-temperature oxidizing atmosphere
    6.
    发明授权
    Austenitic heat-resistant steel which forms Al.sub.2 O.sub.3 film in high-temperature oxidizing atmosphere 失效
    奥氏体耐热钢，在高温氧化气氛中形成Al2O3膜

    公开(公告)号：US4204862A

    公开(公告)日：1980-05-27

    申请号：US893688

    申请日：1978-04-05

    申请人： Satoshi Kado ,  Taketomo Yamazaki ,  Tetsu Sakamoto ,  Mikio Yamanaka ,  Kotaro Yoshida

    发明人： Satoshi Kado ,  Taketomo Yamazaki ,  Tetsu Sakamoto ,  Mikio Yamanaka ,  Kotaro Yoshida

    IPC分类号： C22C38/48 ,  C22C38/50 ,  C22C38/06

    CPC分类号： C22C38/50 ,  C22C38/48

    摘要： An austenitic heat-resistant steel which forms an oxide film mainly composed of Al.sub.2 O.sub.3 in a high-temperature oxidizing atmosphere, consisting essentially of not more than 0.2% of C, not more than 1.0% of Si, not more than 2.0% of Mn, 12 to 37% of Ni, 9 to 25% of Cr, more than 4.5 but not more than 6% of Al, and at least one member selected from the group consisting of Ti, Nb and Zr in a total amount of not more than 0.8%, with the balance being Fe; the .delta.-ferrite value of this steel, calculated from the formula set forth below, is from 0 to 7.9; this steel is removed of an internal oxide layer which has been formed just below the steel surface during hot working. ##EQU1## where Wi and Mi represent, respectively, the percent by weight and the atomic weight of Ti, Nb and Zr, and when the term ##EQU2## is negative this term is regarded as zero. This steel composition may contain one or more rare earth elements such as Y, Ce and La in a total amount of not more than 0.08%.

    摘要翻译： 奥氏体耐热钢，其在高温氧化气氛中形成主要由Al2O3组成的氧化膜，其基本上由不超过0.2％的C，不超过1.0％的Si，不超过2.0％的Mn， Ni中的12〜37％，Cr：9〜25％，Al：4.5以上且6％以下，以及选自Ti，Nb，Zr中的至少1种以下。 0.8％，余量为Fe; 由下列公式计算的该钢的δ-铁素体值为0至7.9; 在热加工期间，该钢被除去已形成在钢表面正下方的内部氧化物层。 δ-铁素体值= 3.0 {（％Cr）+ 1.5（％Si）+ 2.5（％Al）}其中Wi和Mi分别表示Ti，Nb的重量百分比和原子量， Zr，当术语“IMAGE”为负时，该项被视为零。 这种钢组合物可以含有一种或多种稀土元素如Y，Ce和La，总量不大于0.08％。

    Method of preparation of catalyst and catalyst prepared by the method for converting nitrogen oxides in exhaust gases
    8.
    发明授权
    Method of preparation of catalyst and catalyst prepared by the method for converting nitrogen oxides in exhaust gases 失效
    通过废气中氮氧化物转化方法制备的催化剂和催化剂的制备方法

    公开(公告)号：US4666882A

    公开(公告)日：1987-05-19

    申请号：US752428

    申请日：1985-07-08

    申请人： Susumu Okazaki ,  Satoshi Kado

    发明人： Susumu Okazaki ,  Satoshi Kado

    IPC分类号： B01D53/94 ,  B01D53/86 ,  B01J23/84 ,  B01J23/847 ,  B01J23/889

    CPC分类号： B01J23/8474 ,  B01D53/8628

    摘要： A catalyst for removing nitrogen oxides from an exhaust gas comprises a composite oxide or mixture of niobic acid or niobium oxide with iron oxide or hydrated iron oxide. The catalyst contains atoms of niobium and atoms of iron in a ratio Nb/Fe not exceeding about 1. The catalyst is useful for converting nitrogen oxides in an exhaust gas to nitrogen gas by contacting the exhaust gas with the catalyst in the presence of a reducing gas, such as ammonia. The catalyst can be prepared by impregnation or coprecipitation.

    摘要翻译： 用于从排气中除去氮氧化物的催化剂包括复合氧化物或铌酸或氧化铌与氧化铁或水合氧化铁的混合物。 该催化剂含有Nb / Fe不超过约1的铌原子和铁原子。该催化剂可用于通过使废气与催化剂在还原剂存在下接触将废气中的氮氧化物转化为氮气 气体，如氨。 催化剂可以通过浸渍或共沉淀制备。