@article { ISI:000279333000002,
	title = {Structure-activity studies of dodecatungstophosphoric acid impregnated bentonite clay catalyst in hydroxyalkylation of p-cresol},
	journal = {Catalysis Communications},
	volume = {11},
	number = {11},
	year = {2010},
	month = {JUN},
	pages = {942-945},
	publisher = {ELSEVIER SCIENCE BV},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Bentonite clay impregnated with dodecatungstophosphoric acid (20\% DTP/BNT) showed an excellent activity, selectivity and stability [95\% product yield with 94\% selectivity to 2, 2{\textquoteright}-methylenebis (4-methylphenol), DAM] for the hydroxyalkylation of p-cresol with formaldehyde at 353 K and for a mole ratio of 5. Ammonia-TPD results showed that an increase in total concentration of acid sites from 4.9 of parent bentonite to 11.6 micromoles per surface area NH(3) (mu molS(-1) NH(3)) of 20\% DTP/BNT was due to a strong interaction of protons of bulk DTP with surface hydroxyl groups of BNT as evidenced by (31)P NMR studies. (C) 2010 Elsevier B.V. All rights reserved.</p>},
	keywords = {(31)P CPMAS NMR, Bentonite, Hydroxyalkylation, p-Cresol, surface modification},
	issn = {1566-7367},
	doi = {10.1016/j.catcom.2010.04.008},
	author = {Garade, Ajit C. and Kshirsagar, V. S. and Jha, Ajay and Rode, C. V.}
}
@article { ISI:000328665300008,
	title = {Effect of SnO2/Al2O3 ratio of Si-based MFI on its acidity and hydrophobicity: application in selective hydroxyalkylation of p-cresol},
	journal = {Catalysis Communications},
	volume = {44},
	number = {SI},
	year = {2014},
	month = {JAN},
	pages = {29-34},
	publisher = {ELSEVIER SCIENCE BV},
	type = {Article},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Silica based MR type molecular sieves with various SnO2/Al2O3 ratios were synthesized from gels having molar compositions SiO2:xSnO(2):yAl(2)O(3):0.23(TPA)(2)O:35H(2)O where 0 \&lt;= x \&lt;= 0.02 and 0 \&lt;= y \&lt;= 0.01. Recyclable, Al-free Sn-MFI catalyst showed 31\% conversion of formaldehyde with 100\% selectivity to 2,2{\textquoteright}-methylenebis(4-methylphenol) in hydroxyalkylation of p-cresol with formaldehyde on account of moderate acidity and higher hydrophobicity. (C) 2013 Elsevier B.A. All rights reserved.</p>},
	keywords = {Al-27 MAS NMR, Hydroxyalkylation, Molecular sieves, p-Cresol, Stannosilicate},
	issn = {1566-7367},
	doi = {10.1016/j.catcom.2013.08.002},
	author = {Garade, Ajit C. and Malwadkar, A. V. and Niphadkar, P. S. and Jha, Ratnesh Kumar and Joshi, P. N. and Rode, C. V.}
}
