Characterization of Porosity and Thermal Properties of Ni-Doped Carbosils Obtained by Starch Gelation

• Main Author: Barbara Charmas
• Format: Article
• Language: English
• Published: Hindawi - SAGE Publishing 2015-08-01
• Series: Adsorption Science & Technology
• Online Access: https://doi.org/10.1260/0263-6174.33.6-8.539

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.