Textured macro- and mesoporous alumina samples designed in the presence of different surfactant types

Author(s)

Petrolini, Davi D. ^[1] ; Pulcinelli, Sandra H. ^[1] ; Santilli, Celso V. ^[1] ; Martins, Leandro ^[1]

Affiliation

^[1] Univ Estadual Paulista UNESP, Inst Quim, BR-14800900 Araraquara, SP - Brazil

• Document type: Journal article
• Source: Journal of Sol-Gel Science and Technology; v. 71, n. 1, p. 9-15, JUL 2014.
• Web of Science Citations: 5

Abstract

This work presents a method that enables the synthesis of porous alumina in the presence of different types of surfactant. The method is based on a sol-gel transition, using surfactants and droplets of a nonpolar phase as templates. The main purpose was to establish a relationship between the templates and the resulting pore structure. The results show that depending on the type of surfactant used (ionic or nonionic), materials presenting variations in the pore family distribution, X-ray powder diffraction patterns and sample morphology were formed. During the synthesis of these alumina samples, the drying step caused loss of the porous structures, so the shrinkage due to different types of surfactants was evaluated. (AU)

• FAPESP's process: 07/53073-4 - Mesoporous ceramics and multifunctional organic-inorganic hybrids prepared by sol-gel process
• Grantee: Celso Valentim Santilli
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 10/01449-3 - Development of porous heterogeneous catalysts for the conversion of renewable feedstocks
• Grantee: Leandro Pierroni Martins
• Support Opportunities: Research Grants - Young Investigators Grants