This work is supported by the NSFC (20233030 and 20273016), Shanghai Science Committee (0249nm028), and the Doctoral Fund of Education Ministry. The assistance of Dr. H. Y. Zhu (The University of Sydney) with improving the English in the paper is gratefully acknowledged.
Conversion of Fly Ash Cenosphere to Hollow Microspheres with Zeolite/Mullite Composite Shells†
Article first published online: 1 JUL 2003
Copyright © 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Functional Materials
Volume 13, Issue 7, pages 563–567, July, 2003
How to Cite
Wang, D.J., Zhang, Y.H., Dong, A.G., Tang, Y., Wang, Y.J., Xia, J.C. and Ren, N. (2003), Conversion of Fly Ash Cenosphere to Hollow Microspheres with Zeolite/Mullite Composite Shells. Adv. Funct. Mater., 13: 563–567. doi: 10.1002/adfm.200304312
- Issue published online: 1 JUL 2003
- Article first published online: 1 JUL 2003
- Manuscript Accepted: 10 MAR 2003
- Manuscript Received: 15 DEC 2002
- Core-shell particles;
- Porous materials;
A seed-induced in-situ hydrothermal conversion technique is proposed to prepare novel hollow microspheres with zeolite/mullite composite shells from fly ash cenosphere (FAC), a solid waste with a hollow structure from coal power stations. Two groups of hollow microspheres were prepared, one with zeolite FAU/mullite composite shells and the other with zeolite LTA/mullite composite shells. The FAC in this study plays dual roles as both the template cores and the aluminosilicate nutrition contributor. The final products inherit the hollow spherical morphology of FAC and possessed bilayered shells, the outer dense shell of zeolite crystals and the inner porous shell of mullite. Such hollow zeolitic materials are expected to have many advantages in applications such as catalysis, adsorption, separation, and as releasing capsules.