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Items for "Synthesis"

Separation of 137mBa from 137Cs using new ion exchanger Na2(H2O)4(H3O)[Al(OH)6Mo6O18]

A new polyoxometalate of chemical formula, Na2(H2O)4(H3O)[Al(OH)6Mo6O18] (1) containing Anderson type large anion has been synthesized and characterized by single-crystal X-ray structure determination and IR spectroscopic studies...

Keywords: Exchanger, Synthesis, Crystal structure, Radiochemical separation

05/2007 | Radiochimica Acta, Oldenbourg Wissenschaftsverlag
Selenium in chemistry and biochemistry in comparison to sulfur

What makes selenoenzymes – seen from a chemist's view – so special that they cannot be substituted by just more analogous or adapted sulfur proteins? This review compiles and compares physicochemical properties of selenium and sulfur, synthetic routes to selenocysteine (Sec) and its peptides, and comparative studies of relevant thiols and selenols and their (mixed) dichalcogens, required to understand the special role of selenium in selenoproteins on the atomic molecular level...

Keywords: disulfide/diselenide/selenenylsulfide interchange, enzyme mechanisms, selenocysteine, selenoproteins, Synthesis

10/2007 | Biological Chemistry, Walter de Gruyter
Isomorphous gallium substitution in the alumosilicate sodalite framework: synthesis and structural studies of chloride and bromide containing phases

In the Na8[T1T2O4]6Y2 sodalite system (Y = Cl, Br, T2 = Si) the aluminium bearing T1 position was successively substituted with gallium...

Keywords: Sodalite, Synthesis, Powder diffraction structure analysis, X-ray diffraction

07/2007 | Zeitschrift für Kristallographie, Oldenbourg Wissenschaftsverlag
Large-quantity single crystal synthesis of TPA-ZSM-5 using KOH as a mineralizer

Single crystals of TPA-ZSM-5 were synthesized using KOH as a mineralizer instead of NaOH. The size of the TPA-ZSM-5 crystals after 120 h was approximately 100 μm...

Keywords: ZSM-5, Synthesis, Lermer’s method, Zeolite W, Analcime

10/2007 | Zeitschrift für Kristallographie, Oldenbourg Wissenschaftsverlag
Synthesis of ethylene maleic anhydride copolymer containing fungicides and evaluation of their effect for wood decay resistance

The aim of the present study was to combat wood decay based on the approach controlled-release biocides from polymers...

Keywords: Copolymer, ethylene maleic anhydride, fungal decay resistance, fungicides, poly(ethylene co-8-hydroxy quinolinyl acrylate), poly(ethylene co-dipentachlorophenyl diacrylate), Synthesis, wood

07/2008 | Holzforschung, Walter de Gruyter