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 本文研究了在甲烷氧化偶联反应的膜反应器中使用完全致密化的（无孔）离子导电钙钛矿作为催化膜的可行性。 这是巴特尔太平洋西北实验室和华盛顿州立大学之间的合作努力，前者负责制备和表征膜，后者负责进行反应堆研究。 将研究两种膜，一种是镧-锶-钴-铁-氧系统，另一种是镧-钡-钴-铁-氧系统。 氧渗透和催化选择性的测量在升高的压力下进行。 动态X射线衍射用于监测膜的稳定性。 甲烷的氧化偶联是一种在单一步骤中将天然气转化为有价值的化学原料的过程。 尽管它具有明显的吸引力，但使用这种方法的成本效益技术一直难以捉摸。 该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。 ***