01741nas a2200241   4500008004100000022001400041245009600055210006900151260007300220300001200293490000600305520089500311653001201206653001601218653002101234653000901255653001201264653003401276100002101310700001301331700002801344856012701372       2008                        eng d  a1566-736700aAlkene epoxidation catalyzed by vanadomolybdophosphoric acids supported on hydrated titania0 aAlkene epoxidation catalyzed by vanadomolybdophosphoric acids su  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a931-9380 v93 a<p>Vanadomolybdophosphoric acids wet-impregnated oil hydrated titania (TiO(2) - xH(2)O), make ail efficient catalytic system for the epoxidation of a variety of alkenes with organic solvent extracted TBHP as the oxidant. By,in appropriate choice of solvent, the catalyst call be reused at least three times without much loss in the activity for subsequent runs. XRD shows that the heteropoly acid is uniformly dispersed over the support and up to 15 wt% loading of the heteropoly acid, no additional peak of the same call be seen in the XRD pattern of the catalyst. The reactivity varied with the nature of alkene but the major product was always the corresponding epoxide. The catalytic system is free of high temperature calcination steps and tedious multi-step procedures, normally encountered in the heter-ogenization of heteropoly acids. (c) 2007 Elsevier B.V. All rights reserved.</p>10aalkenes10aepoxidation10aheteropoly acids10aTBHP10atitania10avanadomolybdophosphoric acids1 aIngle, Rohit, H.1 aVinu, A.1 aHalligudi, Shivaraj, B.  uhttps://library.ncl.res.in/content/alkene-epoxidation-catalyzed-vanadomolybdophosphoric-acids-supported-hydrated-titania-001293nas a2200253   4500008004100000022001400041245016900055210006900224260007300293300001200366490000700378520038500385653000800770653001600778653000900794653000800803653001200811653001800823653000900841100002600850700001400876700001800890856013100908       2008                        eng d  a1566-736700aSelective epoxidation of styrene to styrene oxide by TBHP using simple transition metal oxides (NiO, CoO or MoO3) as highly active environmentally-friendly catalyst0 aSelective epoxidation of styrene to styrene oxide by TBHP using   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcNOV  a205-2070 v103 a<p>Simple transition metal oxides, such as NiO, CoO or MoO3, etc. show high catalytic activity for the selective epoxidation of styrene to styrene oxide by TBHP. The order of choice for different transition metal oxides for epoxidation is NiO &gt; CoO &gt; MoO3 &gt; Cr2O3 &gt; Fe2O3 &gt; ZnO &gt;= U3O8 &gt;&gt; TiO2 &gt;&gt; MnO2. (C) 2008 Elsevier B.V. All rights reserved.</p>10aCoO10aepoxidation10aMoO310aNiO10astyrene10aStyrene oxide10aTBHP1 aChoudhary, Vasant, R.1 aJha, Rani1 aJana, Prabhas  uhttps://library.ncl.res.in/content/selective-epoxidation-styrene-styrene-oxide-tbhp-using-simple-transition-metal-oxides-nio-001457nas a2200229   4500008004100000022001400041245012500055210006900180260010200249300001200351490000800363520056000371653000900931653001300940653004900953653001401002653000901016100002601025700002201051700002401073856013001097       2012                        eng d  a0974-362600aSolvent-free oxidation of aldehydes to acids by TBHP using environmental-friendly -exchanged Mg-Al hydrotalcite catalyst0 aSolventfree oxidation of aldehydes to acids by TBHP using enviro  aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScJUL  a835-8390 v1243 a<p>A number of hydrotalcite (Mg-Al, Mn-Al, Co-Al, Ni-Al, Mg-Fe, Mg-Cr and Cu-Al) catalysts, with or without MnO-exchange, were evaluated for their performance in the solvent-free oxidation of benzaldehyde to benzoic acid by tert-butyl hydroperoxide under reflux in the absence of any solvent. The MnO-exchanged Mg-Al-hydrotalcite (Mg/Al = 10) showed high activity in the oxidation of different aromatic and aliphatic aldehydes to their corresponding acids and also showed excellent reusability in the oxidation process which is environmental-friendly.</p>10aacid10aAldehyde10aMnO4-1-exchanged Mg-Al-hydrotalcite catalyst10aOxidation10aTBHP1 aChoudhary, Vasant, R.1 aDumbre, Deepa, K.1 aNarkhede, Vijay, S.  uhttps://library.ncl.res.in/content/solvent-free-oxidation-aldehydes-acids-tbhp-using-environmental-friendly-exchanged-mg-al-001796nas a2200253   4500008004100000022001400041245013300055210006900188260000800257300001200265490000600277520091200283653002401195653001601219653002801235653002701263653000901290100002401299700002801323700002301351700001701374700002401391856012701415       2017                        eng d  a2168-048500aEnvironmentally benign bioderived carbon microspheres-supported molybdena nanoparticles as catalyst for the epoxidation reaction0 aEnvironmentally benign bioderived carbon microspheressupported m  cJAN  a904-9100 v53 a<p>A one pot synthesis of molybdenum oxide nanoparticles (NPs supported on bioderived carbon microspheres is reported. The catalyst was synthesized by the low temperature hydrothermal (LTH) method using D-glucose and bagasse as the carbon source. The carbonization of bagasse resulted in the formation of nonuniform carbon microspheres while glucose resulted in uniform carbon spheres. SEM and STEM elemental mapping show the uniform distribution of molybdenum oxide NPs over the carbon microspheres. XPS spectroscopy confirmed that molybdenum was in the Mo6+ oxidation state. The 1% MoO3 supported on carbon microspheres derived from D-glucose showed excellent catalytic activity up to 100% olefin conversion with 100% epoxide selectivity using organic tent-butyl hydroperoxide as an oxidant. The catalyst was successfully used for up to five cycles without losing substantial activity and selectivity.</p>10aCarbon microspheres10aepoxidation10aheterogeneous catalysis10aHydrothermal synthesis10aTBHP1 aDoke, Dhananjay, S.1 aUmbarkar, Shubhangi, B.1 aGawande, Manoj, B.1 aZbori, Radek1 aBiradar, Ankush, V.  uhttps://library.ncl.res.in/content/environmentally-benign-bioderived-carbon-microspheres-supported-molybdena-nanoparticles