@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:000250399300012,
	title = {Synthesis and characterization of NCL-5, NCL-6 and NCL-7: new zeolites enriched with polymorph B of the BEA family},
	journal = {Microporous and Mesoporous Materials},
	volume = {105},
	number = {1-2},
	year = {2007},
	month = {SEP},
	pages = {82-88},
	publisher = {ELSEVIER SCIENCE BV},
	type = {Article},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>The synthesis of all-silica analogs of polymorph B-enriched zeolites of the BEA family denoted as NCL-5, NCL-6 and NCL-7 was realized hydrothermally at lower water content in fluoride medium using perchloric acid as promoter and terraethylammonium hydroxide as template. The present article explains the effect of different synthesis parameters on NCL-5, NCL-6 and NCL-7. The samples were characterized using XRD, low temperature N-2-adsorption, Si-29 MAS NMR and FTIR spectroscopy. The phase composition of the structures was derived using simulated patterns for the random intergrowths of polymorphs A and B using DIFFaX Code. The stacking direction c{\textquoteright} is perpendicular to the a{\textquoteright}b{\textquoteright} plane of the layer. The phase composition of polymorph B derived using DIFFaX code was found to be 90-95\%. 70-75\% and 60-65\% in NCL-5, NCL-6 and NCL-7, respectively. The gradual decrease of polymorph B concentration in these samples showed a correlation with the decrease in water/SiO2 molar ratio in gel. The framework FTIR spectral analysis of NCL-5 and all-silica-beta supported the postulation that significant enrichment of polymorph B in NCL-5 compared to that in all-silica-beta, as indicated by the relative intensities of pair of bands at 1097 and 1018 cm(-1) and 460 and 423 cm(-1) vibrations, leads to more tortuous channel structure associated with polymorph B. (C) 2007 Elsevier Inc. All riahts reserved.</p>},
	keywords = {BEA family, NCL-5, NCL-6, NCL-7, polymorph B enrichment, synthesis, zeolites},
	issn = {1387-1811},
	doi = {10.1016/j.micromeso.2007.05.063},
	author = {Kadgaonkar, Mahesh D. and Kasture, Mahesh W. and Bhange, Deu S. and Joshi, Praphulla N. and Ramaswamy, Veda and Gupta, Narendra M. and Kumar, Rajiv}
}
