Synthesis of hierarchically porous silica and metal oxide beads using emulsion-templated polymer scaffolds

Zhang, H., Hardy, G. C., Khimyak, Y. Z., Rosseinsky, M. J. and Cooper, A. I. (2004) Synthesis of hierarchically porous silica and metal oxide beads using emulsion-templated polymer scaffolds. Chemistry of Materials, 16 (22). pp. 4245-4256. ISSN 0897-4756

Full text not available from this repository.

Abstract

Uniform, hierarchically porous inorganic beads (SiO2, A1 2O3, TiO2, and ZrO2) have been produced using emulsion-templated polymer beads as templates. The polymer scaffolds were prepared by oil-in-water-in-oil (O/W/O) sedimentation polymerization (Zhang, H.; Cooper, A. I. Chem. Mater. 2002, 14, 4017). The inorganic beads were prepared by simply immersing the polymer scaffold beads in a range of inorganic precursor solutions, followed by sol-gel condensation in air and subsequent calcination of the polymer phase. The hierarchical structures are composed of mesopores (diameters 2-5 nm), micropores (in the case of silica beads), and large emulsion-templated macropores of around 5-10 μm. All of the pores are highly interconnected. The inorganic beads exhibit high macropore volumes as characterized by mercury intrusion porosimetry. Polymer-silica composite beads with micropores and high macropore volumes were also produced. These large inorganic beads (diameters 1.0-1.5 mm) are easily handled and separated and may be useful in applications such as catalysis and separation, especially for macromolecules or viscous systems where large pores are needed to improve mass transport into the pore structure.

Item Type: Article
Uncontrolled Keywords: chemistry(all),chemical engineering(all),materials chemistry ,/dk/atira/pure/subjectarea/asjc/1600
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 09 Jul 2021 07:28
Last Modified: 17 Nov 2021 04:46
URI: https://ueaeprints.uea.ac.uk/id/eprint/80461
DOI: 10.1021/cm0492944

Actions (login required)

View Item View Item