Hard x-ray induced synthesis of OF₂

Journal Article · Tue Jul 31 00:00:00 EDT 2018 · Chimica Oggi

OSTI ID:1484041

Pravica, Michael G. ^[1]; Wang, Yonggang ^[2]; White, Melanie ^[1]; Xiao, Yuming ^[3]; Chow, Paul ^[3]

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1. Univ. of Nevada, Las Vegas, NV (United States). Dept. of Physics and Astronomy. High Pressure Science and Engineering Center (HiPSEC)
2. Center for High Pressure Science and Technology Advanced Research (HPSTAR), Beijing (China)
3. Argonne National Lab. (ANL), Argonne, IL (United States). High Pressure Collaborative Access Team (HP-CAT). Advanced Photon Source

We sought to demonstrate here that hard x-rays can initiate a sequence of acatalytic photochemical reactions with the aim of creating molecular mixtures (O₂ and F₂) and then observe the two species react to form OF₂ and with little introduction of heat. Two x-ray Raman scattering (XRS) studies of 1. KBF₄ and 2. a mixture of KBF₄ + KClO₄ pressurized to 3 GPa in a diamond anvil cell (DAC) at ambient temperature at the 16 ID-D undulator beamline at the Advanced Photon Source. The spectrometer collected photons with energy losses around 680 eV near the fluorine K-edge. Fluorine K-edge x-ray Raman spectroscopy demonstrated the clear formation of a new peak near 682 eV energy loss after some 8 hours of irradiation and detection of the KBF₄/KClO₄ mixture which likely represents OF₂ produced from the following reaction: O₂+2F₂→ 2OF₂ following irradiation of the mixture to release O₂ and F₂ , respectively, from each constituent.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Nevada, Las Vegas, NV (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Grant/Contract Number: AC02-06CH11357; NA0002912; NA0001974; FC08-01NV14049; FG02-99ER45775
• OSTI ID: 1484041
• Journal Information: Chimica Oggi, Journal Name: Chimica Oggi Journal Issue: 4 Vol. 36; ISSN 0392-839X
• Publisher: Teknoscienze Srl
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
fluorine chemistry
high pressure
OF2 synthesis
solid state
x-rays