Characterization of Porosity and Thermal Properties of Ni-Doped Carbosils Obtained by Starch Gelation
This paper presents the studies of effects of different Ni 2+ contents on the structural and thermal properties of carbosils prepared by deposition of carbon matter (starch gelation) on the silica gel (Si-50) matrix. These mesoporous materials were characterized by a varied pore structure with devel...
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| Published in: | Adsorption science & technology Vol. 33 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
SAGE Publications
01-08-2015
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| Online Access: | Get full text |
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| Summary: | This paper presents the studies of effects of different Ni 2+ contents on the structural and thermal properties of carbosils prepared by deposition of carbon matter (starch gelation) on the silica gel (Si-50) matrix. These mesoporous materials were characterized by a varied pore structure with developed surface and large pore volume. The porous structure of the initial silica gel and carbosils was characterized by the low-temperature nitrogen adsorption/desorption method as well as by pore-size distribution calculated from the calorimetric data by analyzing the thermal effects of liquid-phase transitions (water, n-decane and 1-decanol) confined in the pores of porous materials. The interfacial behaviour of different media confined incarbosil pores during the freezing/melting processes of obtained materials was studied. The results show that different catalyst contents have a significant effect on the porous structure formation. |
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| ISSN: | 0263-6174 2048-4038 |
| DOI: | 10.1260/0263-6174.33.6-8.539 |