Np(V/VI) redox chemistry in cementitious systems: XAFS investigations on the speciation under anoxic and oxidizing conditions

Applied Geochemistry

Volumn 28, Issue , 2013, Pages 109-118

  Gaona, Xavier ^a   Wieland, Erich ^a   Tits, Jan ^a   Scheinost, Andreas C ^b,c   Dähn, Rainer ^a  

^a PAUL SCHERRER INSTITUTE   (Switzerland)

^b INSTITUTE OF ION BEAM PHYSICS AND MATERIALS RESEARCH   (Germany)

^c EUROPEAN SYNCHROTRON RADIATION FACILITY   (France)

Author keywords

[No Author keywords available]

Indexed keywords

ANOXIC CONDITIONS; AQUEOUS SPECIES; BOND DISTANCE; CALCIUM SILICATE HYDRATE; CEMENT PASTE; CEMENT-BASED REPOSITORY; CEMENTITIOUS MATERIALS; CEMENTITIOUS SYSTEMS; EXAFS; EXAFS DATA; HARDENED CEMENT PASTE; HIGH-CONTENT; INCORPORATION MECHANISM; INTERMEDIATE LEVEL WASTES; MOLECULAR ENVIRONMENT; NEPTUNYL; OXIDIZING CONDITIONS; PH CONDITION; REDOX CHEMISTRY; REDOX STATE; SI ATOMS; TETRAMETHYL AMMONIUM HYDROXIDE; WASTE FORMS; XAFS; XANES;

CALCIUM SILICATE; CEMENTS; HYDRATES; SILICON;

NEPTUNIUM;

ALKALINITY; BIOLOGICAL UPTAKE; CALCIUM; CHEMICAL ENVIRONMENTAL CONDITIONS; HYDRATION; HYDROLYSIS; HYDROXIDE; IMMOBILIZATION; ISOTOPE; NEPTUNIUM; OXIDATION; OXYGEN; PH; REDOX POTENTIAL; SILICON; SPECIATION (CHEMISTRY); WASTE;

EID: 84871937317     PISSN: 08832927     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.apgeochem.2012.10.024     Document Type: Article

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