TY - JOUR
T1 - Titanium3+ hexacyanometallates(II)
T2 - Preparation and porous framework
AU - Ávila, Manuel
AU - Vargas, Claudia
AU - Yee-Madeira, Hernani
AU - Reguera, Edilso
PY - 2010/9
Y1 - 2010/9
N2 - The studied compounds were prepared by the precipitation method mixing Ti + in concentrated HCl with aqueous solution of [M(CN)6] where M = Fe, Ru, Os. The formed solids, Ti3Cl[M(CN)6]2·10H 2O, were characterized by IR spectroscopy, X-ray diffraction, thermogravimetry, Mössbauer spectroscopy, energy-disperse X-ray spectroscopy, UV/Vis spectroscopy, adsorption data, and chemical analyses. Their crystal structures were solved and refined from the recorded X-ray powder patterns in the Fm3m space group. This series of compounds has a porous framework with a relatively high free volume, which is occupied by coordinated and hydrogen bonded water molecules. The charge balancing Cl- ion was found coordinated to titanium atoms. This series of porous solids was studied in order to explore the hydrogen interaction with the titanium atoms found at the surface of the cavities. On the water removal by moderate heating their porous framework collapses as reveal the nitrogen, CO2, and hydrogen adsorption but without complex salt decomposition. On the solids rehydration the porous framework is partially restored.
AB - The studied compounds were prepared by the precipitation method mixing Ti + in concentrated HCl with aqueous solution of [M(CN)6] where M = Fe, Ru, Os. The formed solids, Ti3Cl[M(CN)6]2·10H 2O, were characterized by IR spectroscopy, X-ray diffraction, thermogravimetry, Mössbauer spectroscopy, energy-disperse X-ray spectroscopy, UV/Vis spectroscopy, adsorption data, and chemical analyses. Their crystal structures were solved and refined from the recorded X-ray powder patterns in the Fm3m space group. This series of compounds has a porous framework with a relatively high free volume, which is occupied by coordinated and hydrogen bonded water molecules. The charge balancing Cl- ion was found coordinated to titanium atoms. This series of porous solids was studied in order to explore the hydrogen interaction with the titanium atoms found at the surface of the cavities. On the water removal by moderate heating their porous framework collapses as reveal the nitrogen, CO2, and hydrogen adsorption but without complex salt decomposition. On the solids rehydration the porous framework is partially restored.
KW - Crystal structure
KW - Hydrogen storage
KW - Porous solids
KW - Prussian blue analogues
KW - Titanium
UR - http://www.scopus.com/inward/record.url?scp=77957947221&partnerID=8YFLogxK
U2 - 10.1002/zaac.201000104
DO - 10.1002/zaac.201000104
M3 - Artículo
SN - 0044-2313
VL - 636
SP - 1968
EP - 1973
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
IS - 11
ER -