Skip navigation

Characterization of a gel-derived silica intended for use as a reference material

Characterization of a gel-derived silica intended for use as a reference material

Thomas, M.A. and Coleman, Nichola (2001) Characterization of a gel-derived silica intended for use as a reference material. Colloids and Surfaces a-Physicochemical and Engineering Aspects, 187. pp. 123-130. ISSN 0927-7757 (doi:10.1016/S0927-7757(01)00629-X)

Full text not available from this repository.

Abstract

A new candidate surface area and pore volume reference material is proposed. A mesoporous gel-derived silica monolith has been investigated by nitrogen sorption and mercury intrusion porosimetry. BET specific surface area (165.5 m(2) g(-1)), specific pore volume (0.986 cm(3) g(-1)) and mean pore radius (11.9 nm) have been monitored for up to 12 months by nitrogen sorption. No significant changes occurred following either storage or repeated usage. The pore volume measured by mercury intrusion is in excellent agreement despite significant compression. The pore structure remained unaltered despite multiple mercury intrusion cycles up to high pressure. This remarkable stability and durability confers properties that compare favorably with those of commercially available reference materials. The primary advantage of the gel-silica monolith is the elimination of errors associated with powder sampling. (C) 2001 Elsevier Science B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Sol-gel, BET, Surface area, Reference
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Last Modified: 17 Oct 2016 09:12
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/11825

Actions (login required)

View Item View Item