The nature of the volatile technetium species formed during vitrification of borosilicate glass

Journal Article · Tue May 26 00:00:00 EDT 2015 · Journal of Radioanalytical and Nuclear Chemistry

DOI:https://doi.org/10.1007/s10967-015-4203-5· OSTI ID:1330087

Childs, Bradley C.; Poineau, Frederic; Czerwinski, Kenneth R.; Sattelberger, Alfred P.

Vitrification of sodium pertechnetate into borosilicate glass was performed in air at 1100 C. A glass with a composition similar to the one developed for vitrification of the low activity waste at the Hanford site was used. A red volatile species was observed above 600° C. The extended X-ray absorption fine structure results indicate the environment of the absorbing Tc atom consists of 2.9(6) O atoms at 1.73(2) A° , 2.2(4) O atoms at 2.02(2) A° , and 0.8(2) O atoms at 2.18(2) A° . The results are consistent with the presence of a mononuclear species with a structure closely related to TcO₃(OH)(H₂O)₂.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1330087
• Journal Information: Journal of Radioanalytical and Nuclear Chemistry, Vol. 306, Issue 2; ISSN 0236-5731
• Publisher: Springer
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
Red
Technetium
Vitrification
Volatile
X-ray absorbance spectroscopy