Engineering Research Equipment Grant/UHV Thermogravimetric Analyzer

这笔赠款将用于购买Cahn TG 121热重系统，用于研究大分子有机分子在柱撑粘土中的扩散和吸附。柱撑粘土是一种具有非常规则的孔道结构的催化材料，可用于汽油裂解、甲醇转化为烯烃和甲苯乙基化等。该装置将用于在Perkin-Elmer TGS-2超高压热重系统中通过低压吸附实验来研究各种有机分子在柱撑粘土中的扩散系数。这一过程将包括将少量细磨的柱撑粘土放入石英微天平，向仪器中引入气体，然后测量摄取量。南加州大学化工系没有其他热重系统，这将对PI在制备新的Pillard材料和改善现有柱撑粘土的催化和筛分性能方面的研究工作大有裨益。他已经在这方面做出了宝贵的贡献，这台设备将极大地帮助他的实验工作。

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.