@article { ISI:000323805300007,
	title = {Influence of method of preparation of solid, double-metal cyanide complexes on their catalytic activity for synthesis of hyperbranched polymers},
	journal = {Applied Catalysis A-General},
	volume = {464},
	year = {2013},
	month = {AUG},
	pages = {51-60},
	publisher = {ELSEVIER SCIENCE BV},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Catalytic activity of a series of Fe-Zn double-metal cyanide (DMC) complexes with varying structural and acidic properties has been investigated for the synthesis of hyperbranched polyesters (HPs) from glycerol and succinic acid/adipic acid. The DMC complexes were prepared using different complexing and co-complexing agents. Hydrophobicity of the surface, Lewis acidity and micro-mesoporous architecture are the critical features of DMC enabled control on gelation process in preparing HPs of high degree of branching. The micro-mesoporous architecture of DMC acts as a nano-reactor for reactant molecules to form primary condensation products which further polymerize yielding dendrimers. Hyperbranched polyesters of degree of branching as high as 90\% could be achieved without gelation using DMC catalysts. (C) 2013 Elsevier B.V. All rights reserved.</p>},
	keywords = {Dendrimers, Double-metal cyanide, heterogeneous catalysis, Hydrophobic solid acid catalyst, Hyperbranched polymers},
	issn = {0926-860X},
	doi = {10.1016/j.apcata.2013.05.024},
	author = {Sebastian, Joby and Srinivas, Darbha}
}
@article { ISI:000323018700017,
	title = {Zirconium phenyl phosphonate phosphite as a highly active, reusable, solid acid catalyst for producing fatty acid polyol esters},
	journal = {Applied Catalysis A-General},
	volume = {462},
	year = {2013},
	month = {JUL},
	pages = {129-136},
	publisher = {ELSEVIER SCIENCE BV},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>The application of zirconium phenyl phosphonate phosphite (ZrPP) as a solid acid catalyst for producing polyol esters by esterification of glycerol or trimethylolpropane with a fatty acid (C-8-C-18.1) is reported for the first time. ZrPP exhibits high catalytic activity and in particular, (di + tri) esters selectivity (92.3 mol\%). These esters of polyols are known for their application as biolubricants. The catalyst prepared using phosphorous acid to phenyl phosphonic acid molar ratio of 3:1 was found superior. The influence of process parameters on activity and selectivity of the catalyst was investigated. ZrPP was reusable in at least three recycling experiments. Hydrophobicity due to exposed phenyl groups on the surface is the possible cause for superior esterification activity of this novel, solid catalyst. (C) 2013 Elsevier B.V. All rights reserved.</p>},
	keywords = {Biolubricants, Esterification of fatty acid, Fatty acid glycerides, Hydrophobic solid acid catalyst, Polyol esters, Zirconium phenyl phosphonate phosphite},
	issn = {0926-860X},
	doi = {10.1016/j.apcata.2013.04.043},
	author = {Varhadi, Poonam and Kotwal, Mehejabeen and Srinivas, D.}
}
