@article { ISI:000267367300016,
	title = {Synthesis of Si-MCM-41 from ternary SiO2-CTAOH-H2O system via dry gel conversion route},
	journal = {Journal of Sol-Gel Science and Technology},
	volume = {51},
	number = {2},
	year = {2009},
	month = {AUG},
	pages = {244-250},
	publisher = {SPRINGER},
	address = {VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS},
	abstract = {<p>Steam assisted dry gel conversion method was employed for the synthesis of Si-MCM-41 from ternary SiO2:CTAOH:H2O systems wherein fumed silica was used as a source of silica. The influence of synthesis time, molar ratios of CTAOH/SiO2 in dry gel and the water content at the bottom of autoclave on the quality and formation of mesophases has been investigated. Powder XRD, N-2 adsorption-desorption, TEM and hydrothermal stability test were the techniques used for sample characterization. Keeping molar ratio of CTAOH/SiO2 constant, shorter synthesis time, lower unit cell parameter and d spacing were observed when steam assisted dry gel conversion method was employed in place of conventional hydrothermal method. There exists an optimum lower limit for water content at the bottom of autoclave for reducing the synthesis period. Keeping synthesis temperature and CTAOH/SiO2 molar ratio fixed, Si-MCM-41 with improved hydrothermal stability was obtained by steam assisted dry gel conversion route.</p>},
	keywords = {Dry gel conversion, powder diffraction, Si-MCM-41, Sol-gel growth, Structural stability, Textural properties},
	issn = {0928-0707},
	doi = {10.1007/s10971-009-1969-3},
	author = {Taralkar, U. S. and Niphadkar, P. S. and Joshi, P. N.}
}
@article { ISI:000263249600064,
	title = {Tin-silicalite-1: synthesis by dry gel conversion, characterization and catalytic performance in phenol hydroxylation reaction},
	journal = {Materials Chemistry and Physics},
	volume = {114},
	number = {1},
	year = {2009},
	month = {MAR},
	pages = {344-349},
	publisher = {ELSEVIER SCIENCE SA},
	address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND},
	abstract = {<p>Tin-silicalite-1 (Sn-MFI) has been successfully synthesized by dry gel conversion (DGC) method. The influence of various synthesis parameters such as crystallization time, temperature, water content at the bottom of autoclave, molar ratios of (TPA)(2)O/SiO(2) and SiO(2)/SnO(2) in dry gel on the crystallization kinetics and physico-chemical properties of Sn-MFI materials has been investigated. Powder-X-ray diffraction (XRD),XPS,AAS, DRUV-vis and SEM techniques were employed as characterization tools. Time-dependent studies revealed that, the progressive crystallization of Sn-MFI depend not only on the synthesis time but also on the other various synthesis parameters. Increase in the crystallization temperature, water content at bottom of autoclave (TPA)(2)O/SiO(2) and SiO(2)/SnO(2) molar ratios in dry gel resulted in the lowering of overall crystallization period. A good correspondence between the chemical composition of the surface and the bulk indicated the uniform distribution of Sn(4+) ions. The presence of these ions in tetrahedral coordination has been indicated by DRUV-vis spectral studies. Although, not better but comparable activity has been shown by Sn-MFI prepared by dry gel conversion method with Sn-MFI prepared by conventional hydrothermal crystallization method in the hydroxylation of phenol reaction. Increase in concentration of isolated Sn(4+) ions led to increase in phenol conversion and H(2)O(2) efficiency. (c) 2008 Elsevier B.V. All rights reserved.</p>},
	keywords = {crystallisation, Dry gel conversion, microporous materials, Sn-MFI},
	issn = {0254-0584},
	doi = {10.1016/j.matchemphys.2008.09.026},
	author = {Niphadkar, Prashant S. and Kotwal, Mehejabeen S. and Deshpande, Shilpa S. and Bokade, Vijay V. and Joshi, Praphulla N.}
}
