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2 条记录 (耗时 0.017 秒)

    Solvent-free mechanochemical preparation of phosphonium salts, phosphorus ylides, and olefins
    1.
    发明授权
    Solvent-free mechanochemical preparation of phosphonium salts, phosphorus ylides, and olefins 失效

    公开(公告)号：US06730812B2

    公开(公告)日：2004-05-04

    申请号：US10358552

    申请日：2003-02-05

    申请人： Vitalij K. Pecharsky ,  Viktor P. Balema ,  Jerzy W. Wiench ,  Marek Pruski

    发明人： Vitalij K. Pecharsky ,  Viktor P. Balema ,  Jerzy W. Wiench ,  Marek Pruski

    IPC分类号： C07F954

    CPC分类号： C07C17/2635 ,  C07C1/34 ,  C07F9/5352 ,  C07F9/54 ,  C07C25/24

    摘要： The present invention provides a method of preparing a phosphonium salt of the formula [R1R2R3P—CR4R5R6]X, comprising ball-milling a phosphine of the formula R1R2R3P with a compound of the formula XCR4R5R6; a method of preparing a phosphorus ylide of the formula R1R2R3P═CR4R5, comprising ball-milling a phosphonium salt of the formula [R1R2R3P—HCR4R5]X in the presence of a base; and a method of preparing an olefin of the formula R4R5C═CR7H or R4R5C═CR7R8, comprising ball-milling a phosphorus ylide of the formula R1R2R3P═CR4R5 with a compound of the formula R7C(O)H or R7C(O)R8. The inventive method produces phosphonium salts and phosphorus ylides by mechanical processing solid reagents under solvent-free conditions. The advantages of the present invention over conventional solution methods, include: (1) extremely high selectivity; (2) high yields; (3) low processing temperatures; (4) simple and scalable reactions using commercially available equipment; and (5) the complete elimination of solvents from the reaction.

    Method of production of pure hydrogen near room temperature from aluminum-based hydride materials
    2.
    发明授权
    Method of production of pure hydrogen near room temperature from aluminum-based hydride materials 失效
    从铝基氢化物材料在室温附近生产纯氢的方法

    公开(公告)号：US06773692B2

    公开(公告)日：2004-08-10

    申请号：US10167556

    申请日：2002-06-12

    申请人： Vitalij K. Pecharsky ,  Viktor P. Balema

    发明人： Vitalij K. Pecharsky ,  Viktor P. Balema

    IPC分类号： C01B304

    CPC分类号： F17C11/005 ,  C01B3/0005 ,  C01B3/04 ,  H01M8/065 ,  Y02E60/321 ,  Y02E60/324 ,  Y02E60/364

    摘要： The present invention provides a cost-effective method of producing pure hydrogen gas from hydride-based solid materials. The hydride-based solid material is mechanically processed in the presence of a catalyst to obtain pure gaseous hydrogen. Unlike previous methods, hydrogen may be obtained from the solid material without heating, and without the addition of a solvent during processing. The described method of hydrogen production is useful for energy conversion and production technologies that consume pure gaseous hydrogen as a fuel.

    摘要翻译： 本发明提供了一种从氢化物基固体材料生产纯氢气的成本有效的方法。 氢化物基固体材料在催化剂的存在下机械加工以获得纯的气态氢。 与以前的方法不同，可以在不加热的情况下从固体材料获得氢，并且在加工期间不加入溶剂。 所描述的氢气生产方法对于消耗纯气态氢作为燃料的能量转化和生产技术是有用的。