@article {56},
	title = {NCL-7, a novel all silica analog of polymorph B rich member of BEA family: synthesis and characterization},
	journal = {Microporous and Mesoporous Materials},
	volume = {101},
	number = {1-2},
	year = {2007},
	note = {International Symposium on Zeolite and Microporous Crystals (ZMPC 2006), Yonago, JAPAN, JUL 30-AUG 02, 2006},
	month = {APR},
	pages = {108-114},
	publisher = {Japan Assoc Zeolites},
	type = {Article},
	address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
	abstract = {<p>{Polymorph B-rich BEA type structure, NCL-7, was synthesized using hydrothermal method in fluoride medium using perchloric acid as promoter. The samples were characterized using XRD, low temperature N-2-adsorption and Si-29 MASNMR. As the structure of beta is highly disordered Rietveld refinement of powder XRD patterns is precluded. Phase composition is derived using the simulated patterns for the random intergrowths of polymorph A and B by DIFFaX. The stacking direction c{\textquoteright} is perpendicular to the a{\textquoteright}b{\textquoteright} plane of the layer. The composition of polymorph B is found to be ca. 60-65\%. Two other structures namely NCL-5 and NCL-6 with varying degree of polymorph B enrichment were also synthesized. Synthesis parameters such as effect of H2O/SiO2, TEAOH/SiO2, HClO4/SiO2 and crystallization temperature were studied thoroughly. The present article explains for the first time the synthesis and characterization of NCL-7, an analog of BEA type family with enrichment of polymorph B and its comparison with normal beta (*</p>},
	keywords = {B-polymorph, DIFFaX, Promoter, Reitveld refinement, synthesis, zeolite beta},
	issn = {1520-6106},
	doi = {10.1016/j.micromeso.2006.10.033},
	author = {Kadgaonkar, Mahesh D. and Kasture, Mahesh W. and Bhange, Deu S. and Joshi, Praphulla N. and Ramaswamy, Veda and Kumar, Rajiv}
}
@article { ISI:000257362100009,
	title = {Non-isothermal kinetic studies of the template decomposition from silicalite-1 framework-high temperature X-ray diffraction and thermogravimetric analysis},
	journal = {Microporous and Mesoporous Materials},
	volume = {113},
	number = {1-3},
	year = {2008},
	month = {AUG},
	pages = {64-71},
	publisher = {ELSEVIER SCIENCE BV},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Non-isothermal decomposition of the tetrapropylammonium cations (TPA(+)) intercalated in silicalite-1 framework has been carried out using thermogravimetric (TG) analysis and high temperature powder X-ray diffraction (HTXRD) techniques. Conversion factor for template decomposition is calculated using two methods viz., \% weight loss from the thermogravimetric analysis and changes in the intensities of the Bragg reflections 101/011 and 200/020 in the HTXRD patterns scanned at different temperatures (range 298823 K). The calculated apparent activation energy for template decomposition in air was 129 and 125 kJ mol(-1), respectively, for the two techniques TG and HTXRD, calculated using the Kissinger method. By Flynn-Wall-Ozawa approach of isoconversion, apparent activation energy for template decomposition in air was 123 and 124 U mol-1, respectively, for TG and HTXRD data. The reaction order was determined using the method of Kennedy and Clark and it is similar to 2 by both the techniques. The second order of template decomposition can be attributed to the fact that TPA+ is positioned in two different orientations inside the silicalite-1 framework. Template removal occurs with a contraction in unit cell dimensions. There is a decrease in the lattice parameters of the as-synthesized silicalite-1 sample after removal of template from the framework. (C) 2007 Elsevier Inc. All rights reserved.</p>},
	keywords = {HTXRD, non-isothermal kinetics, Silicalite-1},
	issn = {1387-1811},
	doi = {10.1016/j.micromeso.2007.11.002},
	author = {Bhange, Deu S. and Pandya, N. A. and Jha, Ratnesh Kumar and Ramaswamy, Veda}
}
