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Title: A novel synthesis of polymeric CO via useful hard X-ray photochemistry

We report on the synchrotron hard X-ray-induced decomposition of strontium oxalate (SrC 2O 4) pressurized to 7 GPa inside a diamond anvil cell (DAC). After some 4 h of irradiation in a white X-ray synchrotron beam, a dark reddish/brown region formed in the area of irradiation which was surrounded by a yellowish brown remainder in the rest of the sample. Upon depressurization of the sample to ambient conditions, the reacted/decomposed sample was recoverable as a dark brown/red and yellow waxy solid. Synchrotron infrared spectroscopy confirmed the strong presence of CO 2 even under ambient conditions with the sample exposed to air and other strongly absorbing regions, suggesting that the sample may likely be polymerized CO (in part) with dispersed CO 2 and SrO trapped within the polymer. These results will have significant implications in the ability to readily produce and trap CO 2 in situ via irradiation of a simple powder for useful hard X-ray photochemistry and in the ability to easily manufacture polymeric CO (via loading of powders in a DAC or high volume press) without the need for the dangerous and complex loading of toxic CO. As a result, a novel means of X-ray-induced polymerization under extreme conditionsmore » has also been demonstrated.« less
Authors:
ORCiD logo [1] ;  [1] ; ORCiD logo [1] ;  [2] ;  [2] ;  [1] ;  [3] ;  [4]
  1. Univ. of Nevada, Las Vegas, NV (United States)
  2. Univ. of Saskatchewan, Saskatoon, SK (Canada)
  3. European Laboratory for Non Linear Spectroscopy (LENS), Sesto Fiorentino (Italy); Adam Mickiewicz Univ., Poznan (Poland)
  4. Uppsala Univ. (Sweden)
Publication Date:
Grant/Contract Number:
NA0001982
Type:
Accepted Manuscript
Journal Name:
Cogent Physics
Additional Journal Information:
Journal Volume: 3; Journal Issue: 1; Journal ID: ISSN 2331-1940
Publisher:
Cogent OA
Research Org:
Univ. of Nevada, Las Vegas, NV (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; X-ray and pressure induced polymerization; useful hard X-ray photochemistry; polymeric carbon monoxide
OSTI Identifier:
1332661