Specific Features of the Adsorption and Nuclear Magnetic Relaxation of the Water Molecules in Active Carbons: 2. The State of Water in Active Carbon with Relatively Large Pores According to the NMR Relaxation Data |
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| Authors: | G Sh Gogelashvili R Sh Vartapetyan D V Ladychuk Yu B Grunin E V Khozina |
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| Institution: | (1) Mari State Technical University, pl. Lenina 3, Ioshkar Ola, 424000, Russia;(2) Institute of Physical Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia |
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| Abstract: | The state of water upon adsorption on FAS-3 active carbon with relatively large micropores is studied by the NMR relaxation method. The dependences of the times of spin–lattice (T
1) and spin–spin (T
2) NMR relaxation of adsorbed water molecules on the adsorption value are established. The character of the dependences of T
1 and T
2 on the number of adsorbed water molecules per primary adsorption site reflects the specific features of the volume filling of micropores and the formation of a continuous adsorption layer on the mesopore surface due to cluster coalescence on the one wall of a pore. The results obtained are compared with the data for typical microporous active carbons, as well as with the data obtained by the adsorption method. |
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