NANO-METAL CATALYSTS FOR POLYOL HYDROGENOLYSIS
    31.
    发明申请
    NANO-METAL CATALYSTS FOR POLYOL HYDROGENOLYSIS 有权
    用于多元醇氢化的纳米金属催化剂

    公开(公告)号:US20100317901A1

    公开(公告)日:2010-12-16

    申请号:US12797084

    申请日:2010-06-09

    摘要: A catalyst composition can include: a support; a ruthenium catalyst (Ru) nanoparticle; and a linker linking the Ru nanoparticle to the support, wherein the linker is stable under hydrogenolysis conditions. In one aspect, the linker can include 3-aminopropyl trimethoxysilane (APTS) or derivatives thereof, such as those with amine functionality. In another aspect, the linker can include phosphotungstic acid (PTA) or other similar solid acid agents. In another aspect, the support can be selected from alumina, carbon, silica, a zeolite, TiO2, ZrO2, or another suitable material. A specific example of a support includes zeolite, such as a NaY zeolite. The Ru nanoparticle can have a size range from about 1 nm to about 25 nm, and can be obtained by reduction of Ru salts.

    摘要翻译: 催化剂组合物可以包括:载体; 钌催化剂(Ru)纳米颗粒; 和将Ru纳米颗粒连接到载体的接头,其中接头在氢解条件下是稳定的。 在一个方面,接头可以包括3-氨基丙基三甲氧基硅烷(APTS)或其衍生物,例如具有胺官能团的那些。 另一方面,接头可以包括磷钨酸(PTA)或其它类似的固体酸剂。 另一方面,载体可以选自氧化铝,碳,二氧化硅,沸石,TiO 2,ZrO 2或其它合适的材料。 载体的具体实例包括沸石,例如NaY沸石。 Ru纳米颗粒可以具有约1nm至约25nm的尺寸范围,并且可以通过还原Ru盐获得。

    COMPOSITIONS AND METHODS FOR THE DELIVERY OF POORLY WATER SOLUBLE DRUGS AND METHODS OF TREATMENT
    32.
    发明申请
    COMPOSITIONS AND METHODS FOR THE DELIVERY OF POORLY WATER SOLUBLE DRUGS AND METHODS OF TREATMENT 有权
    用于输送不合适的水溶性药物的组合物和方法以及治疗方法

    公开(公告)号:US20090197821A1

    公开(公告)日:2009-08-06

    申请号:US12394833

    申请日:2009-02-27

    摘要: The present embodiment of the invention is generally directed to compositions comprising suspensions of poorly water-soluble compounds recrystallized in nanoparticulate sizes ranging from 0.1 to 5 μm. In addition, the embodiment of the invention is directed to methods for preparation and administration of these compositions to a patient for prevention and treatment of disease states. In particular, the embodiment of the invention is directed to compositions comprising suspensions of poorly water-soluble compounds, such as antimitotics and antibiotics, in nanoparticulates and methods of prevention and treatment of chronic disease states, such as cancer, by intraperitoneal and intravenous administration of such compositions

    摘要翻译: 本发明的本实施方案通常涉及包含以0.1至5μm的纳米颗粒尺寸重结晶的难溶于水的化合物的悬浮液的组合物。 此外,本发明的实施方案涉及用于制备和施用这些组合物给患者以预防和治疗疾病状态的方法。 特别地,本发明的实施方案涉及包含难溶性水溶性化合物如抗虚证和抗生素的悬浮液在纳米颗粒中的组合物,以及通过腹膜内和静脉内施用预防和治疗慢性疾病状态如癌症的方法 这样的组合物

    Process for selective oxidation of olefins to epoxides
    33.
    发明申请
    Process for selective oxidation of olefins to epoxides 有权
    将烯烃选择性氧化成环氧化物的方法

    公开(公告)号:US20070093666A1

    公开(公告)日:2007-04-26

    申请号:US11586061

    申请日:2006-10-25

    IPC分类号: C07D301/12

    CPC分类号: C07D301/12 Y02P20/582

    摘要: A process for the selective oxidation of olefins to epoxides comprising the step of contacting the olefin (propylene) 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); and adding a pressurizing gas (nitrogen) to increase the pressure, whereby olefin is further dissolved in organic solvent system to increase the selectivity and yield of the desired epoxide (propylene oxide).

    摘要翻译: 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)与氧化剂(过氧化氢)接触的步骤, ,在包含有机水混溶性溶剂(甲醇)的溶剂体系中; 并加入加压气体(氮气)以增加压力,从而使烯烃进一步溶解在有机溶剂体系中以提高所需环氧化物(环氧丙烷)的选择性和产率。

    Method and apparatus for tracking a synchronization signal

    公开(公告)号:US07012937B2

    公开(公告)日:2006-03-14

    申请号:US09768728

    申请日:2001-01-24

    IPC分类号: H04J3/06

    摘要: A method and system for tracking a time division multiplexed synchronization signal in a satellite communication system is provided. The signal is provided as a series of frames with beacon signals time division multiplexed into at least one time slot of each frame. The beacon signal in each frame comprises a unique word sequence, which is the same in each frame, and a portion of a PN sequence. The entire PN sequence is distributed into a plurality of frames forming a superframe. Frequency variations of the incoming signal are tracked at the satellite terminal by correlating the PN sequence of the incoming signal against early and late locally generated versions of the PN sequence in a discriminate circuit. The output of the discriminate is provided to a delay locked loop circuit of at least third order. The output of the loop is used to adjust the frequency of the VCO, which clocks the A/D converter operating on the incoming signal. The product of the PN sequence of the incoming signal and an on-time locally generated version of the PN sequence is provided to an FFT circuit. The satellite terminal determines if it is locked onto the incoming signal based on the output of the FFT. If the satellite terminal is not locked, the terminal returns to an acquisition mode.

    In situ mitigation of coke buildup in porous catalysts with
supercritical reaction media
    37.
    发明授权
    In situ mitigation of coke buildup in porous catalysts with supercritical reaction media 失效
    用超临界反应介质原位缓解多孔催化剂中的焦炭积累

    公开(公告)号:US5725756A

    公开(公告)日:1998-03-10

    申请号:US424872

    申请日:1995-04-18

    摘要: A method to minimize catalyst deactivation rate and coke laydown, and maximize desired reaction rate in processing of industrially significant reactions under supercritical conditions to generate a reaction mixture stream including formed reaction products and reactants, said contacting at a desired catalyst temperature of about 1-1.2 critical temperature of the resulting reaction mixture and at a pressure between the critical pressure of the reaction mixture and a pressure necessary to establish said reaction mixture fluid density of greater than 0.65 gm/cc.

    摘要翻译: 一种使催化剂失活速率和焦炭沉积最小化的方法,并且在超临界条件下加工工业上显着反应的期望反应速率最大化以产生包含形成的反应产物和反应物的反应混合物流,所述反应混合物流在所需的催化剂温度下为约1-1.2 所得反应混合物的临界温度和反应混合物的临界压力和建立所述反应混合物所需的压力之间的压力流体密度大于0.65gm / cc。

    Method of conducting an endothermic reaction in a packed-bed reactor
with external energy addition
    38.
    发明授权
    Method of conducting an endothermic reaction in a packed-bed reactor with external energy addition 失效
    在具有外加能量的填充床反应器中进行吸热反应的方法

    公开(公告)号:US5710356A

    公开(公告)日:1998-01-20

    申请号:US343218

    申请日:1994-11-22

    IPC分类号: B01J8/02 C07C5/333 C07C5/32

    摘要: A novel, packed-bed, reverse flow reactor is provided for the endothermic dehydrogenation of ethylbenzene to styrene. The catalyst bed is flanked by inert end sections to prevent the occurrence of the reverse reaction. Ethylbenzene vapor is added at one end of the reactor while superheated steam is added concurrently at a downstream location. The flow direction is periodically reversed by alternating the ethylbenzene introduction between the reactor ends and the steam introduction between axially symmetric locations away from the reactor ends. Employing a steam to ethylbenzene feed ratio of 8:1 to 10.2:1 (as compared to 12:1 to 17:1 employed during conventional adiabatic operation), it is shown that the proposed reverse flow operation produces reactor temperatures that are hundreds of degrees higher than the mixing cup temperature of the feed streams. While catalyst temperatures are at a maximum when the steam is introduced midway between the reactor ends, splitting the steam addition among multiple axially symmetric locations produces lower and more uniform temperatures that are better suited to providing optimum ethylbenzene conversion and styrene selectivity while maintaining efficient utilization of the added energy.

    摘要翻译: 提供了一种新型的填充床逆流反应器,用于乙苯对苯乙烯的吸热脱氢。 催化剂床侧面是惰性末端部分,以防止发生反向反应。 在反应器的一端加入乙苯蒸气,同时在下游位置加入过热蒸汽。 通过交替反应器端之间的乙苯引入和远离反应器端的轴对称位置之间的蒸汽引入来周期性地逆转流动方向。 使用蒸汽与乙苯的进料比为8:1至10.2:1(与常规绝热操作期间的12:1至17:1相比),显示所提出的反向流动操作产生几百度的反应器温度 高于进料流的混合杯温度。 当蒸汽在反应器端部之间的中间引入催化剂温度时,催化剂温度处于最大值,在多个轴向对称位置之间分离蒸汽添加物产生较低和更均匀的温度,其更适合于提供最佳乙苯转化率和苯乙烯选择性,同时保持有效利用 增加的能量。