@article { ISI:000230389700024, title = {Synthesis of linear alkyl benzenes over zirconia-supported 12-molybdophosphoric acid catalysts}, journal = {Journal of Molecular Catalysis A - Chemical}, volume = {236}, number = {1-2}, year = {2005}, month = {JUL}, pages = {162-167}, publisher = {ELSEVIER SCIENCE BV}, type = {Article}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

The liquid-phase alkylation of benzene with 1-octene and 1-dodecene was investigated using zirconia-supported 12-molybdophosphoric acid (MPA) as catalyst. The catalysts with different MPA loading (5-25 wt.\% calcined at 700 degrees C) and calcination temperature (15 wt.\% calcined from 500 to 750 degrees C) were prepared by suspending zirconium oxyhydroxide in methanol solution of MPA followed by drying and calcination. These catalysts were characterized by X-ray diffraction, and P-31 MAS NMR spectroscopy measurements. The XRD results indicated that MPA stabilizes the tetragonal phase of zirconia. 3 1 P MAS NMR spectra show that the nature of phosphorous species depend on MPA loading and calcination temperature, and it show the existence of three types of phosphorous species, one is the Keggin unit and the other is the decomposition product of MPA and third one an unidentified species. FTIR pyridine adsorption on 15\% MPA catalyst calcined at 700 degrees C showed the presence both Bronsted and Lewis acidity. Under the reaction conditions of 83 C, benzene/1-olefin molar ratio of 10 (time, 1 h), the most active catalyst, 15\% MPA calcined at 700 C gave more than 90\% olefin conversion with selectivity to 2-phenyl octane, 55\% and 2-phenyl dodecane, 45\%. (c) 2005 Elsevier B.V. All rights reserved.

}, keywords = {12-molybdophosphoric acid, benzene alkylation, linear alkyl benzene, Zirconia}, issn = {1381-1169}, doi = {10.1016/j.molcata.2005.03.033}, author = {Devassy, Biju M. and Lefebvre, F. and Bohringer, Walter and Fletcher, Jack C. Q. and Halligudi, Shivaraj B.} } @article {36}, title = {Selective oxidation of anthracene using inorganic-organic hybrid materials based on molybdovanadophosphoric acids}, journal = {Journal of Catalysis}, volume = {247}, number = {2}, year = {2007}, month = {APR}, pages = {166-175}, publisher = {EUROPEAN POLYMER FEDERATION}, type = {Article}, address = {1, QUAI LEZAY-MARNESIA, F067000 STRASBOURG, FRANCE}, abstract = {

{Inorganic-organic hybrid materials were synthesized by immobilization of molybdovanadophosphoric acids onto mesoporous silicas, such as MCM-41, MCM-48, and SBA-15, through an organic linker. 12-Molybdovanadophosphoric acids of the general formula H3+xPMO12-xVxO40 (x = 0-3).nH(2)O, such as H-4[

}, keywords = {EPDM, Photostabilization, polymeric HALS}, issn = {1618-7229}, doi = {10.1016/j.jcat.2007.01.020}, author = {Bordoloi, Ankur and Lefebvre, F. and Halligudi, Shivaraj B.} } @article { ISI:000264123000013, title = {Synthesis of chiral sulfoxides by enantioselective sulfide oxidation and subsequent oxidative kinetic resolution using immobilized Ti-binol complex}, journal = {Journal of Catalysis}, volume = {262}, number = {1}, year = {2009}, month = {FEB}, pages = {111-118}, publisher = {ACADEMIC PRESS INC ELSEVIER SCIENCE}, address = {525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA}, abstract = {

Chiral Ti-binol complex was immobilized onto ionic liquid modified SBA-15 and characterized by different physicochemical techniques. The catalyst was found to be highly enantioselective in the heterogeneous asymmetric oxidation of prochiral sulfides to sulfoxides and subsequent oxidative kinetic resolution of the sulfoxides using aqueous tert-butylhydroperoxide as the oxidant. A positive non-linear effect was observed in the oxidation-kinetic resolution of thioanisole using this supported catalyst. The supported catalyst was reused in multiple catalytic runs without any loss of enantioselectivity. (C) 2008 Elsevier Inc. All rights reserved.

}, keywords = {Kinetic resolution, Mesoporous silica, Non-linear effect, Sulfides, Sulfoxides, Supported ionic liquid, Ti-binol}, issn = {0021-9517}, doi = {10.1016/j.jcat.2008.12.007}, author = {Sahoo, Suman and Kumar, Pradeep and Lefebvre, F. and Halligudi, Shivaraj B.} }