Fe2+ is notoriously sensitive. I think TiCl4 (a liquid) is used to test dryboxes because it hydrolyzes easily with production of white smoke if exposed to water vapor. If a small amount of this were mixed into a degassed binder, its XANES would
ZjQcmQRYFpfptBannerStart
This Message Is From an External Sender
This message came from outside your organization.
ZjQcmQRYFpfptBannerEnd
Fe2+ is notoriously sensitive. I think TiCl4 (a liquid) is used to test dryboxes because
it hydrolyzes easily with production of white smoke if exposed to water vapor. If a small
amount of this were mixed into a degassed binder, its XANES would presumably show the
effect of hydrolysis. As has been mentioned, Li-containing materials such as Li2FePO4
are sensitive. Removing the Li by oxidation or hydrolysis would cause the Fe to oxidize
to Fe3+.
Sincerely,
Matthew Marcus
On 2/21/2024 10:44 AM, Gerald T. Seidler wrote:
> Dear XAFS community, We've been developing air-sensitive sample cells for several of our XAFS experiments, but we don't have a good way of characterizing how well they actually reject air and water. Does anyone have recommendations
> ZjQcmQRYFpfptBannerStart
> This Message Is From an External Sender
> This message came from outside your organization.
> ZjQcmQRYFpfptBannerEnd
> Dear XAFS community,
> We've been developing air-sensitive sample cells for several of our XAFS experiments, but we don't have a good way of characterizing how well they actually reject air and water. Does anyone have recommendations for easily available 3d transition metal compounds that have a 'reasonable' amount of air sensitivity for purposes of sample call validation? Any suggestions for other methods to validate performance? We would grind the sample and form a pellet with a degassed binder, in a glovebox or glovebag.
> With thanks,
> Jerry
>
> --
> /Gerald Seidler/
> /Professor, Physics Department
> /
> /University of Washington/
> /https://urldefense.us/v3/__http://faculty.washington.edu/seidler/index.html__;!!G_uCfscf7eWS!ZQolBCsrtt913aAL9WhU7dEvTPIooBd701TPnC1xD2kIcsOp8Un_ZWV_vZCvkHrs0XerYlro8DB1A077YkXo_S8DmEFhhT9K$ <https://urldefense.us/v3/__http://faculty.washington.edu/seidler/index.html__;!!G_uCfscf7eWS!bc8I7gtiYjYV5xc8tbm1xHCOWp8emLi4nZo7rvTjsDdGw3JMBVgas9avdYSiT995CKzLi-eu2GCc0RfkE-Cz2uX2VeU-3A$>
>/
> /seidler@uw.edu <mailto:seidler@uw.edu>/
>
> _______________________________________________
> Ifeffit mailing list
> Ifeffit@millenia.cars.aps.anl.gov
> https://urldefense.us/v3/__http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit__;!!G_uCfscf7eWS!ZQolBCsrtt913aAL9WhU7dEvTPIooBd701TPnC1xD2kIcsOp8Un_ZWV_vZCvkHrs0XerYlro8DB1A077YkXo_S8DmPOVjkOj$
> Unsubscribe: https://urldefense.us/v3/__http://millenia.cars.aps.anl.gov/mailman/options/ifeffit__;!!G_uCfscf7eWS!ZQolBCsrtt913aAL9WhU7dEvTPIooBd701TPnC1xD2kIcsOp8Un_ZWV_vZCvkHrs0XerYlro8DB1A077YkXo_S8DmNV7jlj_$