Engineering Research Equipment Grant/UHV Thermogravimetric Analyzer

这笔拨款是为购买Cahn TG 121热重系统提供资金，用于研究柱状粘土中大型有机分子的扩散和吸附。柱状粘土是一种由非常规则的多孔结构组成的催化材料，用于例如天然气裂解，甲醇转化为烯烃和甲苯乙化。该设备将用于在Perkin-Elmer TGS-2特高压热重系统中通过低压吸附实验研究柱状粘土中各种有机分子的扩散率。这个过程将包括在石英微天平中放置少量磨细的柱状粘土，向仪器中引入气体，然后测量吸收率。南加州大学化学工程系没有其他的热重测量系统，这将对PI在制备新的柱状材料和改善现有柱状粘土的催化和筛分性能方面的研究工作大有裨益。他在这个领域已经做出了宝贵的贡献，这个设备将大大有利于他的实验工作。

This grant is to provide funds for the purchase of a Cahn TG 121 thermogravimetric system to be utilized in studies of diffusion and sorption of large organic molecules in pillared clays. Pillared clays are catalytic materials consisting of very regular porous structures with uses in for example, gas oil cracking, methanol conversion to olefins and toluene ethylation. The equipment will be used to study the diffusivity of various organic molecules in pillared clays by low pressure sorption experiments in a Perkin-Elmer TGS-2 UHV thermogravimetric system. The procedure will consist of placing small amounts of finely ground pillared clay in the quartz microbalance, introducing gas into the apparatus and then measuring the uptake. There are no other thermogravimetric systems in the Chemical Engineering Department at USC and this will be of great benefit to the PI's research effort in preparing new pillard materials and for improving the catalytic and sieving properties of pillared clays already in existence. He has already made valuable contributions in this area and this equipment will greatly benefit his experimental efforts.