Single-point magnetic resonance imaging study of water adsorption in pellets of zeolite 4A.
The water uptake process in commercial type particles of zeolite 4A has been studied using a single-point MRI method. True proton density, T1, T2, and T*2 relaxation times were obtained with submillimetric resolution, overcoming the restrictions of short T*2 signals. The molecular mobility in nonequilibrium conditions has been characterized by relaxation time mapping. A clear reduction of the water sorption rate was observed by comparing MRI profiles of a loosely packed bed and gravimetric measurements of spread particles from the same sieved zeolite batch.
Prado
P J
PJ
Department of Physics.
Balcom
B J
BJ
Jama
M
M
D000327:Adsorption; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D015394:Molecular Structure; D011522:Protons; D012680:Sensitivity and Specificity; D014867:Water / Q000378:metabolism*; D017641:Zeolites / Q000378:metabolism*
D011522:Protons; D014867:Water; D017641:Zeolites