【摘 要】
：
For thermodynamically and kinetically controlled catalytic reactions, the influence of a membrane is discussed. For reactions operating near to the thermodynami
论文部分内容阅读
For thermodynamically and kinetically controlled catalytic reactions, the influence of a membrane is discussed. For reactions operating near to the thermodynamic equilibrium, the conversion can be increased if one/all of the products is/are selectively removed in an extractor type membrane reactor. Examples are esterifications, dehydrogenations, and water dissociation using water, hydrogen, and oxygen selective membranes, respectively. For kinetically controlled reactions, i.e. reactions with a very negative free enthalpy, mainly the selectivity can be increased via the control of the partial pressure of the educts by dosing effects using distributor/contactor membrane reactors. Examples are partial oxidations and hydrogenations. In detail, the application of an oxygen transporting perovskite hollow fiber membrane with a nano-designed grain boundary structure in the hydrogen production by thermal water splitting and in the partial oxidation of hydrocarbons as case studies for thermodynamically and kinetically controlled reactions is discussed.
其他文献
Different from the conventional evaluation criteria using performance measures, information theory based criteria present a unique beneficial feature in applica
Ta2O5 single crystals have been grown by the laser heated pedestal growth (LHPG) technique up to several centimeters length with diameter of 1.1 mm. The crystal
应用高温拉伸实验研究了氢对Ti-6Al-4V合金超塑变形行为的影响,借助于OM、SEM、TEM和XRD等分析手段,分析了氢对钛合金组织演变的影响.结果表明:氢可促进合金中β相数量的增加
采用非同时读出条件下晶体两波耦合实验装置,以单束光入射Ce:KNSBN光折变晶体,通过改变抽运光偏振方向和晶体c轴的夹角φ,系统记录了不同φ角下的抽运光透射光强I′p随时间的
采用腔外单次通过方式,测量了LiIO3晶体在532 nm皮秒脉冲下的受激拉曼散射.实验中观察到3级斯托克斯线(556.07,582.30, 611.76 nm)和1级反斯托克斯线(509.57 nm),由此可计算
假设液体是不可压缩的粘性液体,用Jourdain形式的普遍动力学原理建立充液系统的动力学控制方程,并采用交替积分法求解此数值计算模型.液体模块采用Lagrange-Euler描述方法建
Nanosized colloidal platinum was prepared by reduction of H2PtCl6 in methanol-water mixture by refluxing. The particle size and morphology were characterized by
本文综述了有机硼化合物在氟离子探针领域的研究进展.介绍了基于三芳基硼化合物、硼酸和硼酸酯的有机硼化合物在氟离子检测中的应用,评述了这些化合物的结构和检测性能之间的
在HI-13串列加速器次级束流线上,使用7 Li初级束,通过2H(7Li,6 He)3 He反应产生了能量为26、32和38 MeV的放射性6 He次级束,纯化并准直后,6 He次级束流纯度可达99%,强度最大
为全面控制产品表面与理论曲面之间的偏差,引入球域Béier曲面的定义,作为圆域Béier曲线在三维空间的推广形式.根据经典微分几何中双参数曲面族的包络原理,运用球面参数坐标