会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 11. 发明申请
    • Process for Selective Oxidation of Olefins to Epoxides
    • 烯烃选择性氧化成环氧化物的方法
    • US20090131693A1
    • 2009-05-21
    • US12206335
    • 2008-09-08
    • Daryle H. BuschBala SubramaniamHyun-Jin LeeTie-Pan Shi
    • Daryle H. BuschBala SubramaniamHyun-Jin LeeTie-Pan Shi
    • C07D301/03C07D301/12C09K3/00
    • C07D301/12Y02P20/582
    • A process for the selective oxidation of olefins to epoxides comprising the step of contacting the olefin (propylene or ethylene) with an oxidant (hydrogen peroxide) in the presence of a Lewis acid oxidation catalyst (MTO), organic base (pyridine or its N-oxide), in a solvent system comprising an organic water-miscible solvent (methanol). The system is pressurized using either the olefin itself or by adding an inert pressurizing gas (nitrogen) to increase the pressure between 230 and 700 psi at a temperature between 0.7 and 1.3 times the critical temperature of the olefin. The resulting increased solubility of the olefin in the organic solvent system increases the selectivity and yield of the desired epoxide (propylene oxide or ethylene oxide).
    • 一种将烯烃选择性氧化成环氧化物的方法,包括在路易斯酸氧化催化剂(MTO),有机碱(吡啶或其N-氧化物)存在下使烯烃(丙烯或乙烯)与氧化剂(过氧化氢)接触的步骤, 氧化物),在包含有机水混溶性溶剂(甲醇)的溶剂体系中。 使用烯烃本身或通过加入惰性加压气体(氮气)来加压系统,以在烯烃的临界温度的0.7至1.3倍之间的温度下增加230至700psi之间的压力。 所产生的烯烃在有机溶剂体系中的溶解度增加了所需环氧化物(环氧丙烷或环氧乙烷)的选择性和产率。
    • 13. 发明授权
    • Sensor for carbon monoxide
    • 一氧化碳传感器
    • US5250171A
    • 1993-10-05
    • US698169
    • 1991-05-10
    • Piers R. G. WarburtonDaryle H. Busch
    • Piers R. G. WarburtonDaryle H. Busch
    • G01N27/416G01N33/00G01N27/26
    • G01N33/004G01N27/4045
    • An electrochemical carbon monoxide detecting method and apparatus (10, 46) is disclosed which can detect carbon monoxide levels as low as about 500 ppm and which has excellent selectivity and a linear response over a broad range of carbon monoxide concentrations. The apparatus (10, 46) employs an electrical cell assembly (12, 54) having an electrolyte (20, 60) containing hydrated Cu(II) ions therein; upon creation of a constant magnitude potential difference between the cell electrodes (22, 24) ranging from about +0.03-+0.15 V, the Cu(II) ions are reduced to Cu(I) ions, and the latter react with carbon monoxide to form Cu(I)-carbonyl complexes. Detection of an electrical parameter indicative of the Cu(II)-Cu(I) reduction permits quantitative carbon monoxide determinations. Preferably, the detecting apparatus (14) is amperometric, employing a potentiostat (28) and output device (38). Alternately, detection can be accomplished potentiometrically.
    • 公开了一种电化学一氧化碳检测方法和装置(10,46),其可以检测一氧化碳水平低至约500ppm,并且在一氧化碳浓度范围内具有优异的选择性和线性响应。 装置(10,46)使用具有在其中含有水合的Cu(II)离子的电解质(20,60)的电池组件(12,54) 在约+ 0.03- + 0.15V范围内的电池电极(22,24)之间产生恒定电位差时,Cu(II)离子被还原成Cu(I)离子,后者与一氧化碳反应 形成Cu(I) - 羰基复合物。 检测指示Cu(II)-Cu(I)还原的电参数允许定量一氧化碳测定。 优选地,检测装置(14)是电流计,采用恒电位仪(28)和输出装置(38)。 或者,可以通过电位法实现检测。