TY - JOUR
T1 - Drying process in the formation of sol-gel derived TiO2 ceramic membrane
AU - Kumar, Krishnankutty-Nair P.
AU - Zaspalis, V.T.
AU - Keizer, K.
AU - Burggraaf, A.J.
PY - 1993
Y1 - 1993
N2 - Accurate drying data for thin titania gel layers dried at 40°C and 20% relative humidity (RH) are given. The drying rate versus free moisture content diagram should show three regions as predicted by the classical drying theory. They are the constant rate period, the first falling rate period and the second falling rate period. The second falling rate period was not observed in the present case, because at 40°C and 20% RH the equilibrium moisture content will be enough to provide a continuous fluid network in the gel. The total drying time in the falling rate period increases with layer thickness. The drying mechanism in the first falling rate period was identified as capillary flow.
AB - Accurate drying data for thin titania gel layers dried at 40°C and 20% relative humidity (RH) are given. The drying rate versus free moisture content diagram should show three regions as predicted by the classical drying theory. They are the constant rate period, the first falling rate period and the second falling rate period. The second falling rate period was not observed in the present case, because at 40°C and 20% RH the equilibrium moisture content will be enough to provide a continuous fluid network in the gel. The total drying time in the falling rate period increases with layer thickness. The drying mechanism in the first falling rate period was identified as capillary flow.
U2 - 10.1016/S0022-3093(05)80646-5
DO - 10.1016/S0022-3093(05)80646-5
M3 - Article
VL - 147-148
SP - 375
EP - 381
JO - Journal of non-crystalline solids
JF - Journal of non-crystalline solids
SN - 0022-3093
ER -