Boehmite sorbs perrhenate and pertechnetate
نویسندگان
چکیده
منابع مشابه
Macrocyclic receptor for pertechnetate and perrhenate anions.
The design and synthesis of a neutral macrocyclic host that is capable of perrhenate and pertechnetate recognition is described. The anion affinities and underlying coordination modes were estimated by several experimental and theoretical methods including a new technique--reverse (99)Tc NMR titration.
متن کاملKinetics of perrhenate uptake and comparative biodistribution of perrhenate, pertechnetate, and iodide by NaI symporter-expressing tissues in vivo.
UNLABELLED Pertechnetate (as (99m)TcO(4)(-)), (123)I(-), and (131)I(-) have a long and successful history of use in the diagnosis and therapy of thyroid cancer, with uptake into thyroid tissue mediated by the sodium-iodide symporter (NIS). NIS has also emerged as a potential target for radiotherapy of nonthyroid malignancies that express the endogenous or transfected symporter. Perrhenates (as ...
متن کاملBis[glycinium(0.5+)] perrhenate
All the residues of the title compound, (C(2)H(5.5)NO(2))(2)[ReO(4)], are located in general crystallographic positions. The glycine mol-ecules have usual conformations [Rodrigues Matos Beja et al. (2006 ▶). Acta Cryst. C62, o71-o72] with the H atom of the carboxylate group half-occupied, thus bearing a formal half-positive charge per molecule. The perrhenate anion has nearly ideal tetra-hedral...
متن کاملSurface Enthalpy of Boehmite
Abs t rac t -The persistence of many seemingly metastable mineral assemblages in sediments and soils is commonly attributed to their sluggish transformation to the stable-phase assemblage. Although undoubtedly kinetics plays a major role, this study shows that thermodynamic factors, particularly surface energy, significantly influence the free energy. Enthalpies of formation of boehmite samples...
متن کاملCrystal Chemistry of Boehmite
-Thirty two boehmites, synthesized at temperatures ranging from room temperature to 300~ were examined by scanning electron microscopy, transmission electron microscopy, electron diffraction, X-ray powder diffraction, differential thermal analysis, and infrared spectroscopy. The results show that boehmite exhibits a continuous gradation in crystallite size ranging from single octahedral layers ...
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ژورنال
عنوان ژورنال: Radiochimica Acta
سال: 2000
ISSN: 2193-3405,0033-8230
DOI: 10.1524/ract.2000.88.6.369