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

Journal Article · · Cogent Physics
 [1];  [1];  [1];  [2];  [2];  [1];  [3];  [4]
  1. High Pressure Science and Engineering Center (HiPSEC), Department of Physics, University of Nevada Las Vegas (UNLV) Las Vegas NV 89154-4002 USA
  2. Canadian Light Source, Department of Physics, University of Saskatchewan Saskatoon Saskatchewan Canada
  3. European Laboratory for Non Linear Spectroscopy (LENS) Sesto Fiorentino 50019 Italy, Faculty of Chemistry, Adam Mickiewicz University Umultowska 89b, 61-614 Poznan�� Poland
  4. Uppsala University Sweden
+ Show Author Affiliations

We report on the synchrotron hard X-ray-induced decomposition of strontium oxalate (SrC2O4) 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 CO2 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 CO2 and SrO trapped within the polymer. These results will have significant implications in the ability to readily produce and trap CO2 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 conditions has also been demonstrated.

Research Organization:
Univ. of Nevada, Las Vegas, NV (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0002912; NA0001982
OSTI ID:
1510532
Alternate ID(s):
OSTI ID: 1332661
Journal Information:
Cogent Physics, Journal Name: Cogent Physics Vol. 3 Journal Issue: 1; ISSN 2331-1940
Publisher:
Informa UK LimitedCopyright Statement
Country of Publication:
United Kingdom
Language:
English

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38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
X-ray and pressure induced polymerization
useful hard X-ray photochemistry
polymeric carbon monoxide