Ion Conducting Perovskites as Catalytic Membranes for the Oxidative Coupling of Methane

离子导电钙钛矿作为甲烷氧化偶联的催化膜

• 批准号: 9521721
• 负责人: William Thomson
• 金额: $ 11.41万
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-01-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9521721&HistoricalAwards=false
• 关键词: Ion; Conducting; Perovskites; Catalytic; Membranes

ABSTRACT CTS-9521721 This is a study of the feasibility of using fully densified (nonporous) ion-conducting perovskites as catalytic membranes in membrane reactors for the oxidative coupling of methane. It is a collaborative effort between Battelle Pacific Northwest Laboratories, who prepares and characterizes the membranes, and Washington State University, which performs the reactor studies. Two membranes will be studied, one a lanthanum-strontium-cobalt-iron-oxygen system, the other a lanthanum-barium-cobalt-iron-oxygen system. Measurements of oxygen permeation and catalytic selectivity are done at elevated pressures. Dynamic X-ray diffraction is used to monitor the stability of the membrane. Oxidative coupling of methane is a process that converts natural gas to a valuable chemical feedstock in a single step. Despite its obvious attractiveness, a cost-effective technology using this approach has been elusive. This project combines advances in catalytic science, reactor design, and new materials to this problem. ***

摘要CTS-9521721研究了在膜反应器中使用全致密(无孔)离子导电钙钛矿作为甲烷氧化偶联催化剂的可行性。这是巴特尔太平洋西北实验室和华盛顿州立大学的合作成果，前者负责膜的制备和表征，后者负责反应堆研究。将研究两种膜，一种是镧-锶-钴-铁-氧体系，另一种是镧-钡-钴-铁-氧体系。氧气渗透率和催化选择性的测量是在加压下进行的。采用动态X射线衍射法对膜的稳定性进行了监测。甲烷氧化偶联是一步将天然气转化为有价值的化学原料的过程。尽管这种方法具有明显的吸引力，但使用这种方法的成本效益技术一直难以捉摸。这个项目结合了催化科学、反应器设计和新材料的进步来解决这个问题。***