Method for producing hydrogen peroxide
    2.
    发明授权
    Method for producing hydrogen peroxide 失效
    生产过氧化氢的方法

    公开(公告)号:US5320821A

    公开(公告)日:1994-06-14

    申请号:US29413

    申请日:1993-03-10

    摘要: A method for producing a high concentration of hydrogen peroxide by reacting oxygen and hydrogen directly in a neutral reaction medium that contains a promoter comprising a halogen containing compound, which halogen containing compound contains at least one halogen other than fluorine, at a reaction temperature in the range of from 0.degree. to 50.degree. C. and at a reaction pressure in the range of from 3 to 150 kg/cm.sup.2 .multidot.G in the presence of a platinum group metal catalyst supported on a catalyst carrier containing a heteropolyacid that has been made insoluble in water or a platinum group metal catalyst supported on a catalyst carrier comprising activated carbon that is supporting a heteropolyacid.

    摘要翻译: 在含有含卤素化合物的促进剂的中性反应介质中直接使氧和氢反应生成高浓度的过氧化氢的方法,所述助催化剂包含含卤素的化合物,该含卤化合物含有至少一种氟以外的卤素, 在负载在含有不溶于水的杂多酸的催化剂载体上的铂族金属催化剂存在下,在0至50℃的范围内和在3至150kg / cm 2 G的范围内的反应压力 或负载在包含负载杂多酸的活性炭的催化剂载体上的铂族金属催化剂。

    Process for producing hydrogen peroxide
    5.
    发明授权
    Process for producing hydrogen peroxide 失效
    生产过氧化氢的方法

    公开(公告)号:US5399334A

    公开(公告)日:1995-03-21

    申请号:US239354

    申请日:1994-05-06

    IPC分类号: C01B15/029 C01B15/01

    CPC分类号: C01B15/029

    摘要: This invention provides a process for producing hydrogen peroxide through catalytic reaction of oxygen with hydrogen in an aqueous medium in the presence of a platinum group metal catalyst, in which an organic solvent having only limited solubility with water and less hydrogen peroxide-dissolving ability compared to that of water is caused to be concurrently present in the reactor, and oxygen and hydrogen are catalytically reacted in an aqueous medium in the presence of a water- and organic solvent-insoluble, hydrophilic platinum group metal catalyst, under a low reaction pressure, to form high concentration aqueous hydrogen peroxide solution within a short time.

    摘要翻译: 本发明提供了一种在铂族金属催化剂存在下,通过在含水介质中的氧气与氢的催化反应来生产过氧化氢的方法,其中与水相比仅具有有限的溶解度和较少的过氧化氢溶解能力的有机溶剂与 在反应器中同时存在水的水,并且在水和介质中,在水和有机溶剂不溶性的亲水性铂族金属催化剂的存在下,在低反应压力下,氧和氢催化反应至 在短时间内形成高浓度的过氧化氢水溶液。

    Valve system for overhead valve internal combustion engine
    7.
    发明授权
    Valve system for overhead valve internal combustion engine 失效
    顶置阀内燃机的阀门系统

    公开(公告)号:US5687680A

    公开(公告)日:1997-11-18

    申请号:US501798

    申请日:1995-07-13

    摘要: An intake cam and an exhaust cam are formed integrally with a cam shaft, and a decompression cam is additionally provided adjacently to the front side of the exhaust cam. A rib is formed in back of the intake cam. A cylindrical surface portion having a diameter being the same as that of the outer periphery surface of a ball bearing for supporting the front portion of the cam shaft and being larger than the diameter of the base circle of the cam shaft, is formed on the front crank case, and a locking stepped portion is formed in back of the cylindrical surface portion. Cutout portions are formed in the locking stepped portion so that the cam shaft can be pulled forward in the state that the intake cam, exhaust cam and the decompression cam are arranged.

    摘要翻译: 进气凸轮和排气凸轮与凸轮轴一体地形成,并且减压凸轮另外设置在排气凸轮的前侧。 肋形成在进气凸轮的后面。 在前面形成有直径与用于支撑凸轮轴的前部并且大于凸轮轴的基圆的直径的球轴承的外周面的直径相同的圆柱形表面部分 曲柄壳体和锁定阶梯部分形成在圆柱形表面部分的后部。 在锁定阶梯部形成切口部,使得凸轮轴能够在进气凸轮,排气凸轮和减压凸轮排列的状态下向前拉。

    Power unit for a vehicle
    8.
    发明授权
    Power unit for a vehicle 失效
    车辆动力单元

    公开(公告)号:US5636608A

    公开(公告)日:1997-06-10

    申请号:US501434

    申请日:1995-07-12

    摘要: A power unit for a vehicle constructed by combining an internal combustion engine and a transmission integrally is provided. A crankshaft rotatably supported in front and rear crankcases of the internal combustion engine is positioned biased slightly toward right side from the center of the crankcases, a cylinder block and a cylinder head is inclined toward the left so as to extend obliquely leftward and upward from the crankshaft, on the left side of the crankshaft are arranged a main shaft and an auxiliary shaft of the transmission in turn, at a middle and upper portion between the main and auxiliary shafts a reverse shaft, and below the auxiliary shaft a driving shaft. On the right side of the crankshaft is arranged a cam shaft. These shafts are parallel with each other and directed in the vehicle running direction.

    摘要翻译: 提供了一种通过将内燃机和变速器整体组合而构成的用于车辆的动力单元。 可旋转地支撑在内燃机的前后曲轴箱中的曲轴被定位为从曲轴箱的中心向右侧稍偏置,气缸体和气缸盖朝向左倾斜地向左和向上倾斜, 在曲轴的左侧,曲轴的主轴和辅助轴依次配置在主轴和副轴之间的中部和上部,后轴,辅助轴的下方是驱动轴。 在曲轴的右侧设有凸轮轴。 这些轴彼此平行并且指向车辆行驶方向。

    Process for producing hydrogen peroxide
    9.
    发明授权
    Process for producing hydrogen peroxide 失效
    生产过氧化氢的方法

    公开(公告)号:US5378450A

    公开(公告)日:1995-01-03

    申请号:US229429

    申请日:1994-04-12

    CPC分类号: B01J23/626 C01B15/029

    摘要: The present invention provides a process for producing hydrogen peroxide by reacting oxygen and hydrogen in a reaction medium catalytically using, as a catalyst, a tin-modified platinum group metal supported on a carrier. In the process using said catalyst, the presence of halogen and acid in reaction medium is unnecessary unlike the prior art methods, and hydrogen peroxide of high concentration can be produced efficiently. Thus, the present process has no restriction for reactor material as seen the prior art methods and further allows for easy purification of produced hydrogen peroxide.

    摘要翻译: 本发明提供了一种通过在反应介质中使氧和氢反应使用负载在载体上的锡改性的铂族金属催化作为催化剂来生产过氧化氢的方法。 在使用所述催化剂的方法中,与现有技术方法不同,反应介质中卤素和酸的存在是不必要的,并且可以有效地生产高浓度的过氧化氢。 因此,本方法对反应器材料没有限制,如现有技术方法所见,并且还允许容易地纯化生产的过氧化氢。

    Method for producing hydrogen peroxide
    10.
    发明授权
    Method for producing hydrogen peroxide 失效
    生产过氧化氢的方法

    公开(公告)号:US5180573A

    公开(公告)日:1993-01-19

    申请号:US811035

    申请日:1991-12-20

    摘要: This invention provides a method for high efficiency, high concentration production of hydrogen peroxide wherein oxygen and hydrogen are reacted in the reaction medium in the presence of a catalyst comprising a metallic or carrier supported platinum group metal catalyst onto which an organic halogen compound which is insoluble in water, which compound excludes compounds which contain no halogen other than fluorine, has been adsorbed or a platinum group metal catalyst supported on a carrier in which a halogenated organic compound, which compound excludes compounds that contain no halogen other than fluorine, has been adsorbed to the carrier prior to supporting the platinum group metal. Since it is not necessary for halogen ions to be present in the reaction medium as it was in the prior art, the problems of deterioration due to the dissolution of the catalyst and of corrosion of the structural materials of the reaction vessel are alleviated.