U.S.-Argentina Cooperative Research: Catalytic Activation of Lower Alkanes: Dehydrogenation and Alkylation Reactions

这一美国-阿根廷合作科学奖资助与D.Resasco博士访问大学有关的旅费和一些消耗性研究用品。俄克拉何马州诺曼的俄克拉何马州和内布拉斯加州林肯大学的G.拉森大学到阿根廷。访问的目的是对低碳烷烃的活化进行研究，以产生烯烃、含氧物和高级碳氢化合物。阿根廷联合私人侦探J·帕雷拉博士来自利塔拉尔国立大学的Incape。巴伊亚·布兰卡南德大学的A·J·鲁科博士也将参与这项研究。该项目由两部分组成。第一个将处理低碳烷烃在铂基催化剂上的脱氢。本研究试图证明在一定的反应条件下，助剂的加入会改变H的表面浓度。考察了改性对烷烃脱氢催化剂活性和稳定性的影响，并对催化剂材料进行了充分的表征。该项目的第二部分将考察烷烃在固体超强酸催化剂上的活化。将研究甲烷-烯烃烷基化、异丁烯-异丁烯烷基化和正丁烷异构化等几种反应。考察了锰和铁作为促进剂对硫酸化氧化锆催化活性的影响。这项研究将试图确定这种促进是否会导致能够在低温下转化甲烷的高活性酸性材料。还将考察铂和锡作为助剂对提高催化剂寿命的作用。这项研究将集中在阐明失活机理，以及确定铂和锡的存在是否改变了结焦的性质和速度。这种促进可能导致催化剂具有非常高的活性，因此能够在相对较低的温度下操作，在此温度下平衡转化率较高。

This U. S.-Argentina Cooperative Science Award supports travel expenses and some expendable research supplies related to the visits of Drs. D. Resasco, Univ. of Oklahoma, Norman, OK and G. Larsen, U. of Nebraska, Lincoln, NE to Argentina. The purpose of the visits is to perform research on the activation of lower alkanes to produce olefins, oxygenates and higher hydrocarbons. The Argentine co-P.I. is Dr. J. Parera, of INCAPE, Universidad Nacional del Litoral . Dr. A. J. Rouco, Universidad del Sur, Bahia Blanca, will also be involved in the research. The project consists of two parts. The first will deal with the dehydrogenation of lower alkanes over Pt- based catalysts. The research will attempt to demonstrate that the addition of promoters alters the surface concentration of H under certain reaction conditions. The effect of the alteration on the activation and stability of alkane dehydrogenation catalysts will be investigated, and the catalytic materials will be fully characterized. The second part of the project will examine the activation of alkanes over solid superacid catalysts. Several reactions, such as methane-olefin alkylation isobutene-isobutylene alkylation and n-butane isomerization will be studied. The effects of Mn and Fe as promoters for the catalytic activity of sulfated zirconia will be investigated. The research will attempt to determine whether such promotion results in highly active acid materials able to convert methane at low temperatures. The effects of Pt and Sn as promoters for improving the life of the catalyst will also be investigated. The research will focus on elucidating deactivation mechanisms, and on determining whether the presence of Pt and Sn modifies the nature and rate of coke formation. Such promotion may result in a catalyst with a very high activity and, in consequence, able to operate at relatively low temperatures at which equilibrium conversions are high.