公开(公告)号：US09019502B1

公开(公告)日：2015-04-28

申请号：US14335149

申请日：2014-07-18

Applicant: U.S. Department of Energy

Inventor： Paul R. Ohodnicki, Jr. ,  Andrew M. Schultz

IPC: G01N21/00 ,  G01N21/55 ,  G01N21/78

CPC classification number: G01N21/783 ,  G01N2201/0826

Abstract: The disclosure relates to a method of detecting a change in a chemical composition by contacting a electronically conducting perovskite-based metal oxide material with a monitored stream, illuminating the electronically conducting perovskite-based metal oxide with incident light, collecting exiting light, monitoring an optical signal based on a comparison of the incident light and the exiting light, and detecting a shift in the optical signal. The electronically conducting perovskite-based metal oxide has a perovskite-based crystal structure and an electronic conductivity of at least 10−1 S/cm, where parameters are specified at the gas stream temperature. The electronically conducting perovskite-based metal oxide has an empirical formula AxByO3-δ, where A is at least a first element at the A-site, B is at least a second element at the B-site, and where 0.8

Abstract translation: 本公开涉及一种通过使电子导电的钙钛矿型金属氧化物材料与监测的流体接触来检测化学组成的变化的方法，用入射光照射电子导电的钙钛矿型金属氧化物，收集离开的光，监测光学 基于入射光和出射光的比较的信号，并检测光信号的偏移。 电子导电钙钛矿型金属氧化物具有至少10-1S / cm的钙钛矿型晶体结构和电子导电性，其中在气流温度下规定了参数。 电子导电钙钛矿型金属氧化物具有经验式AxByO3-δ，其中A至少为A位的第一元素，B为B位上的至少第二元素，其中0.8