Despite decades of research,the reduction behavior of pertechnetate,TcO_(4)^(−),is not well understood and represents one of the largest knowledge gaps in the transition metal series.Conventional wisdom presumes the r...Despite decades of research,the reduction behavior of pertechnetate,TcO_(4)^(−),is not well understood and represents one of the largest knowledge gaps in the transition metal series.Conventional wisdom presumes the reduction of Tc_(4)^(−)in aqueous systems to predominantly follow either a rapid two electron,or three electron process to form either a Tc^(V)or Tc^(IV)species.展开更多
The first transuranium element neptunium(Np)exhibits complicated behavior in acidic solutions as it adopts a wide range of oxidation states typically from+3 to+6 and coordinates with a large variety of ligands.In part...The first transuranium element neptunium(Np)exhibits complicated behavior in acidic solutions as it adopts a wide range of oxidation states typically from+3 to+6 and coordinates with a large variety of ligands.In particular,the accurate determination of Np redox potentials in nitric acid solutions is challenging due to overlapping chemical and electrochemical reactions leading to significant experimental uncertainties.展开更多
基金supported by(1)the U.S.Department of Energy’s Office of Environmental Management and performed as part of the Technetium Management Hanford Site project at the Pacific Northwest National Laboratory(PNNL)and(2)the Laboratory Directed Research and Development Program at PNNL.PNNL is operated by Battelle for the U.S.Department of Energy under Contract DE-AC05-76RL01830。
文摘Despite decades of research,the reduction behavior of pertechnetate,TcO_(4)^(−),is not well understood and represents one of the largest knowledge gaps in the transition metal series.Conventional wisdom presumes the reduction of Tc_(4)^(−)in aqueous systems to predominantly follow either a rapid two electron,or three electron process to form either a Tc^(V)or Tc^(IV)species.
基金supported by the Laboratory Directed Research and Development Program at the Pacific Northwest National Laboratory operated by Battelle for the U.S.Department of Energy under Contract DE-AC05-76RL01830.
文摘The first transuranium element neptunium(Np)exhibits complicated behavior in acidic solutions as it adopts a wide range of oxidation states typically from+3 to+6 and coordinates with a large variety of ligands.In particular,the accurate determination of Np redox potentials in nitric acid solutions is challenging due to overlapping chemical and electrochemical reactions leading to significant experimental uncertainties.
