01693nas a2200181   4500008004100000022001400041245010700055210006900162260007100231300001400302490000700316520095400323100002901277700002601306700002801332700002501360856012601385       2007                        eng d  a0888-588500aCobalt-salen intercalated montmorillonite catalyst for air oxidation of p-cresol under mild conditions0 aCobaltsalen intercalated montmorillonite catalyst for air oxidat  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcDEC  a8413-84190 v463 a<p>Air oxidation of p-cresol under very mild conditions (338 K and ambient pressure) was carried out in a semibatch reactor over a solid catalyst developed by intercalating cobalt-salen into the montmorillonite clay. The intercalation of cobalt - salen was done by a simple protocol, and the characterization of the intercalated catalyst was done by XPS, FTIR, and XRD techniques. A total selectivity &gt;= 90% to the oxidation products could be achieved with this solid catalyst by eliminating the undesired coupling side products in air oxidation of p-cresol under ambient pressure conditions. Effect of various process parameters on the conversion and selectivity pattern were also studied, and it was found that the selectivity ratio of aldehyde to alcohol could be varied by suitably changing the reaction conditions. This heterogeneous catalyst was found to give a 5-fold higher turnover number than the homogeneous cobalt - salen complex.</p>1 aRode, Chandrashekhar, V.1 aKshirsagar, Vikas, S.1 aNadgeri, Jayprakash, M.1 aPatil, Kashinath, R.  uhttps://library.ncl.res.in/content/cobalt-salen-intercalated-montmorillonite-catalyst-air-oxidation-p-cresol-under-mild-001081nas a2200205   4500008004100000022001400041245011600055210006900171260008400240300001200324490000700336520024600343100002600589700002800615700002100643700002500664700002500689700002900714856013200743       2008                        eng d  a0366-702200aHighly active nanostructured Co3O4 catalyst with tunable selectivity for liquid phase air oxidation of p-cresol0 aHighly active nanostructured Co3O4 catalyst with tunable selecti  a1-5 KANDA-SURUGADAI CHIYODA-KU, TOKYO, 101-8307, JAPANbCHEMICAL SOC JAPANcMAR  a310-3110 v373 a<p>This is a first report of highly efficient heterogeneous nanostructured Co3O4 catalyst (6-8 nm) having high surface area (95 m(2)/g) developed for selective liquid phase air oxidation of p-cresol under atmospheric pressure conditions.</p>1 aKshirsagar, Vikas, S.1 aVijayanand, Subramanian1 aPotdar, Hari, S.1 aJoy, Pattayil, Alias1 aPatil, Kashinath, R.1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/highly-active-nanostructured-co3o4-catalyst-tunable-selectivity-liquid-phase-air-oxidation-001506nas a2200193   4500008004100000022001400041245008600055210006900141260007100210300001400281490000700295520076900302100002601071700002101097700002501118700002401143700002901167856011601196       2009                        eng d  a0888-588500aHeterogeneous cobalt-saponite catalyst for liquid phase air oxidation of p-cresol0 aHeterogeneous cobaltsaponite catalyst for liquid phase air oxida  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcNOV  a9423-94270 v483 a<p>Heterogeneous Co-saponite was found to be an efficient catalyst for the liquid phase oxidation of p-cresol under mild conditions. Divalent cobalt tons were found to be in both the tetrahedral and octahedral positions of the saponite clay. Studies on the effect of reaction parameters showed that the rate of reaction increased with increase in Co loading from 5 to 13% and then remained constant up to 30% of Co loading, while the rate of oxidation showed a first-order dependence on the partial pressure of oxygen up to 300 kPa. Results of oxidation experiments over Co-saponite, in an Inert atmosphere, and the XPS studies Suggest Mars-van Krevelen pathway operating, which involves lattice oxygen of Co-saponite in the liquid phase oxidation of p-cresol.</p>1 aKshirsagar, Vikas, S.1 aGarade, Ajit, C.1 aPatil, Kashinath, R.1 aJha, Ratnesh, Kumar1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/heterogeneous-cobalt-saponite-catalyst-liquid-phase-air-oxidation-p-cresol-001257nas a2200253   4500008004100000022001400041245006000055210005900115260007500174300001200249490000700261520042900268653001600697653002700713653001300740653002600753653000800779100002600787700002100813700002500834700002100859700002900880856009400909       2009                        eng d  a1022-552800aLiquid phase oxidation of p-cresol over cobalt saponite0 aLiquid phase oxidation of pcresol over cobalt saponite  a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGER/PLENUM PUBLISHERScJUN  a784-7880 v523 a<p>Liquid phase oxidation of p-cresol was carried out over a Co-saponite catalyst in a temperature and pressure range of 333-393 K and 20-827 kPa, respectively in n-propanol. Co-saponites with varying cobalt content (5-30%) were prepared and screened among which 13% Co-saponite gave the highest conversion of 92% of p-cresol with 92% selectivity to p-hydroxybenzaldehyde without formation of any non-oxidation products.</p>10aCo-saponite10aLiquid phase oxidation10ap-Cresol10ap-Hydroxybenzaldehyde10aXPS1 aKshirsagar, Vikas, S.1 aGarade, Ajit, C.1 aPatil, Kashinath, R.1 aShirai, Masayuki1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/liquid-phase-oxidation-p-cresol-over-cobalt-saponite-0