Accession Number:

AD1099678

Title:

Operando Micro-Raman Spectroscopy: Intermediate Temperature MEIC Air-Separation Membranes

Descriptive Note:

Technical Report,30 Sep 2017,30 Jun 2018

Corporate Author:

Northeastern University Boston United States

Personal Author(s):

• Smotkin,Eugene

Report Date:

2018-12-27

Pagination or Media Count:

13.0

Abstract:

This final report describes work towards development of operando Raman spectroscopic methods for characterization of intermediate temperature 500-650C mixed ionic-electronic conducting MIEC oxide membranes for air separation. The proposal aims were to 1 develop procedures for preparation of MIECs for oxygen separation, and 2 to develop operando Raman spectroscopic methodologies applicable to hot MIEC membranes beneath a CaF2 window. A consideration related to Raman micro-spectroscopy of hot surfaces is the distance required between the microscope objective and the hot oxide surface. In addition to this, the in-house procedure for making mixed fluorite-perovskite disks was established.

Descriptors:

• raman spectroscopy
• electron density
• high temperature
• x ray diffraction
• perovskites
• membranes
• electrons
• confocal microscopy

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy
• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE