@article { ISI:000241996500012,
	title = {Vapour phase methylation of phenol over nanocrystalline ZnFe(2-x)A1(x)O(4) (x=0, 0.25, 0.5, 0.75 and 1.0) ferrospinel system},
	journal = {Indian Journal of Chemical Technology},
	volume = {13},
	number = {5},
	year = {2006},
	month = {SEP},
	pages = {493-498},
	publisher = {NATL INST SCIENCE COMMUNICATION},
	type = {Article},
	address = {DR K S KRISHNAN MARG, NEW DELHI 110 012, INDIA},
	abstract = {<p>The alkylation ofphenol with methanol was carried out over ZnFe2-xAlxO4 (x = 0, 0.25, 0.5, 0.75 and 1.0) type spinel systems in a Fixed bed, down flow reactor. The influence of Surface acidity, cation distribution in the spinel lattice and various reaction parameters are discussed. A maximum yield of 70.9 and 22.9\% with selectivity of 73.5 and 23.3\% was obtained for 2,6-xylenol and o-cresol respectively, giving a total ortho selectivity of: 96.8\% over ZnFeAlO4 at 350 degrees C, methanol to phenol molar ratio of 5 and WHSV of 0.6 h(-1). Catalyst characterization was made by XRD, Mossbauer spectroscopy, ammonia desorption and BET surface area measurements. Mossbauer spectroscopy reveals isomorphic substitution or Fe 3 by smaller A 13, into the octahedral sites leading to lattice distortion, Unsymmetrical charge distribution and charge transfer from iron to oxygen making it more basic and proton attracting. This helps vertical adsorption ofphenol and formation of 2.6-xylenol. It has been concluded that catalyst acidity plays major role in the reaction as compared to surface area.</p>},
	keywords = {consecutive methylation, ferrospinels, vertical and horizontal adsorption},
	issn = {0971-457X},
	author = {Reddy, Vanga S. and RadheShyam, A. and Dwivedi, Reena and Rai, A. and Anilkumar, Mettu and Chumbhale, Vilas R. and Aswar, A. S. and Prasad, R.}
}
@article { ISI:000274954400005,
	title = {Gas-phase oxidant-free oxidation of cyclohexanol over V2O5-MoO3-M2O (M = Na, K, Cs) catalysts},
	journal = {Indian Journal of Chemical Technology},
	volume = {17},
	number = {1},
	year = {2010},
	month = {JAN},
	pages = {43-49},
	publisher = {NATL INST SCIENCE COMMUNICATION-NISCAIR},
	address = {DR K S KRISHNAN MARG, PUSA CAMPUS, NEW DELHI 110 012, INDIA},
	abstract = {<p>Oxidant-free oxidation (dehydrogenation) of cyclohexanol is carried out in a down-flow integral laboratory scale reactor using different alkali doped catalysts. The effect of reaction temperature, contact time (W/F) and doping of alkali metals is studied to check its effect on nature of prominent products of the reaction (cyclohexanone and cyclohexene). At lower temperature the cyclohexanone prevails whereas at higher temperature cyclohexene is observed in prominence. Acid-modified catalysts (with boron and phosphorous) facilitated cyclohexene selectivity whereas alkali modified catalysts facilitated cyclohexanone selectivity. Calcination of sodium modified catalyst at different temperatures under static condition affect characteristic phase intensity and cyclohexanone selectivity. XRD investigation showed formation of different inorganic phases as the characteristic of dopant. Cesium modified catalyst showed better dehydrogenation activity.</p>},
	keywords = {Cyclohexanol, dehydration, Dehydrogenation, Electronegativity, V2O5-MoO3},
	issn = {0971-457X},
	author = {Vyawahare, Y. K. and Chumbhale, Vilas R. and Pardhy, S. A. and Samuel, V. and Aswar, A. S.}
}
