TY - JOUR
T1 - Mobility of chromium in inorganic oxides
T2 - Spectroscopic fingerprinting of oxidation states and coordination environments
AU - Weckhuysen, Bert M.
AU - Schoofs, Bart
AU - Schoonheydt, Robert A.
PY - 1997/6/7
Y1 - 1997/6/7
N2 - The mobility of Crn+ in inorganic oxides has been investigated by combined diffuse reflectance (DR)-EPR spectroscopies as a function of the Cr oxidation state, the type of inorganic oxide (silica, alumina and mordenite) and the environmental conditions (hydrated and dehydrated state). Crn+ ions are mobile under hydrated and dehydrated conditions and Crn+ preferentially migrates from silica to alumina and, to a lesser extent, to mordenite, although only a small amount of migration of Crn+ is observed from alumina to mordenite and vice versa. The observed preference sequences are discussed in relation to the properties of the inorganic oxides.
AB - The mobility of Crn+ in inorganic oxides has been investigated by combined diffuse reflectance (DR)-EPR spectroscopies as a function of the Cr oxidation state, the type of inorganic oxide (silica, alumina and mordenite) and the environmental conditions (hydrated and dehydrated state). Crn+ ions are mobile under hydrated and dehydrated conditions and Crn+ preferentially migrates from silica to alumina and, to a lesser extent, to mordenite, although only a small amount of migration of Crn+ is observed from alumina to mordenite and vice versa. The observed preference sequences are discussed in relation to the properties of the inorganic oxides.
UR - https://www.scopus.com/pages/publications/33748733359
U2 - 10.1039/a700046d
DO - 10.1039/a700046d
M3 - Article
AN - SCOPUS:33748733359
SN - 0956-5000
VL - 93
SP - 2117
EP - 2120
JO - Journal of the Chemical Society - Faraday Transactions
JF - Journal of the Chemical Society - Faraday Transactions
IS - 11
ER -