Ethylene from methane and catalysts therefor
    2.
    发明授权
    Ethylene from methane and catalysts therefor 失效
    来自甲烷的乙烯及其催化剂

    公开(公告)号:US5245124A

    公开(公告)日:1993-09-14

    申请号:US851878

    申请日:1992-03-16

    Abstract: A catalyst having the composition A:Al.sub.2 O.sub.3 is used as a catalyst for producing ethylene from methane. A is an alkali metal, preferably lithium. The catalyst may be doped with an additive such as MgCl.sub.2. A weak oxidation catalyst such as MoO.sub.3 or ZrO.sub.2 may be added. The catalyst is heated to at least 750.degree. C. in a catalytic reactor and a mixture of air and methane is passed over the heated catalyst. Oxygen or air may be added part way along the catalytic reaction to oxidize H.sub.2 but not C.sub.2 H.sub.4.

    Abstract translation: 使用具有组成A:Al 2 O 3的催化剂作为从甲烷生产乙烯的催化剂。 A是碱金属,优选锂。 催化剂可以掺杂添加剂如MgCl 2。 可以加入弱氧化催化剂如MoO 3或ZrO 2。 将催化剂在催化反应器中加热至至少750℃,并将空气和甲烷的混合物通过加热的催化剂。 氧或空气可以沿着催化反应部分途径加入以氧化H2而不是C2H4。

    Gas storage using transition metal dichalcogenides
    3.
    发明授权
    Gas storage using transition metal dichalcogenides 失效
    使用过渡金属二硫属元素的气体储存

    公开(公告)号:US5279805A

    公开(公告)日:1994-01-18

    申请号:US880203

    申请日:1992-05-06

    Abstract: Hydrogen and gaseous hydrocarbons are stored by introducing the gases into a transition metal dichalcogenide having the formula MX.sub.2. M is selected from the group consisting of Mo, W and Ti and X is selected from the group consisting of S and Se. The MX.sub.2 is in the form of platelets affixed to basal planes of adjacent platelets. The basal planes of adjacent platelets are separated by voids. The composition is prepared by intercalating MX.sub.2 powder with lithium, adding water to separate the MX.sub.2 into single layers and then adding acid to adjust the pH to a range where edges and basal planes of the single layers have opposite charges. Preferably a catalyst is added to the MX.sub.2, the catalyst being selected from the group of metals consisting of Pt, Pd, Ni, Co, Fe, Mg, Zr, Cr, Al, Zn, Mn or combinations thereof. The gas can be recovered from the composition by heating to a temperature of 250.degree. C. when the catalyst is used.

    Abstract translation: 通过将气体引入具有式MX2的过渡金属二硫属化物中来储存氢气和气态烃。 M选自Mo,W和Ti,X选自S和Se组成的组。 MX2是固定在相邻血小板基底平面上的血小板形式。 相邻血小板的基底平面被空隙分开。 通过将MX2粉末与锂嵌入,加入水以将MX2分离成单层,然后加入酸以将pH调节至单层的边缘和基面具有相反电荷的范围来制备组合物。 优选将催化剂加入到MX2中,该催化剂选自由Pt,Pd,Ni,Co,Fe,Mg,Zr,Cr,Al,Zn,Mn或它们的组合组成的金属组。 当使用催化剂时,可以通过加热至250℃的温度从组合物中回收气体。

    Transition metal oxide films and gas sensors thereof
    4.
    发明授权
    Transition metal oxide films and gas sensors thereof 失效
    过渡金属氧化物膜及其气体传感器

    公开(公告)号:US5342701A

    公开(公告)日:1994-08-30

    申请号:US860068

    申请日:1992-03-30

    CPC classification number: G01N27/12 Y10T428/31504

    Abstract: Thick oriented films are produced from oxides of molybdenum, tungsten or titanium. These films comprise a plurality of single-molecular thickness layers of semi-crystalline oxide having parallel basal planes. The oxides are produced by sintering highly oriented films of the corresponding metallic sulfide at a temperature of 300.degree.-350.degree. C. The film may be deposited on a substrate between electrical contacts to function as a gas sensor for hydrogen.

    Abstract translation: 厚取向膜由钼,钨或钛的氧化物制成。 这些膜包括多个具有平行基面的半结晶氧化物的单分子厚度层。 氧化物通过在300-350℃的温度下烧结相应的金属硫化物的高取向膜来制备。膜可以沉积在电触点之间的衬底上,起到氢的气体传感器的作用。

    Gas sensor
    5.
    发明授权
    Gas sensor 失效
    气体传感器

    公开(公告)号:US5055270A

    公开(公告)日:1991-10-08

    申请号:US439982

    申请日:1989-11-21

    CPC classification number: G01N27/124 G01N33/0026

    Abstract: A gas sensing device has a sampling chamber for containing a gas to be sensed, with a gas sensing element with the chamber for providing an output signal which varies in response to the presence of the gas in the chamber. An orifice, or other restriction, permits gas flow between the interior and the exterior of the chamber and a pump, e.g. in the form of a heater, displaces a sample of the gas through the restriction into the interior of the chamber for sensing by the sensing element and subsequently displaces gas from the interior to the exterior of the chamber.

    Abstract translation: 气体感测装置具有用于容纳要被感测的气体的采样室,气体感测元件具有用于提供响应于腔室中的气体的存在而变化的输出信号的腔室。 孔或其他限制允许气体在室的内部和外部之间流动,以及泵,例如泵。 以加热器的形式,将通过限制器的气体样本置换到室的内部,以便由感测元件感测,并随后将气体从腔室的内部移位到外部。

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