@article { ISI:000227565800022,
	title = {Oxidative dehydrogenation of ethylbenzene over vanadia-alumina catalysts in the presence of nitrous oxide: structure-activity relationship},
	journal = {Journal of Catalysis},
	volume = {230},
	number = {2},
	year = {2005},
	month = {MAR},
	pages = {484-492},
	publisher = {ACADEMIC PRESS INC ELSEVIER SCIENCE},
	type = {Article},
	address = {525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA},
	abstract = {<p>A series of vanadia-alumina catalysts with different vanadia contents were prepared by a wet impregnation method. The influence of the local structure of vanadia in these catalysts on the oxidative dehydrogenation of ethylbenzene with nitrous oxide was investigated. The use of N2O as a co-feed remarkably enhanced the styrene yield compared with the use of N-2. Characterization of these vanadia catalysts by XRD, FTIR, UV-vis, TPR, XPS, and V-51 NMR techniques suggests that the nature of the VOx species depends on the vanadia loading: the predominant species are monomeric vanadia at lower loadings, two-dimensional polyvanadates at intermediate loadings, and bulk-like V2O5 and AlVO4 at higher loadings. The rate of oxidative dehydrogenation (ODH) of ethylbenzene per vanadium atom increases with vanadia loading and reaches a maximum at 10 wt\%, the loading at which the surface predominantly contains polyvanadate species. The observed variation in the selectivity of products with vanadium loading indicates that the monomeric V5+ species favors dehydrogenation, whereas bulk-like V2O5 preferentially participates in the dealkylation of ethylbenzene. The vanadium species remains at a higher oxidation state in the presence of N2O, leading to a higher styrene yield. than in a N-2 atmosphere. The ODH turnover rates increased with decreasing energy of the absorption edge in the UV-vis spectrum, at low VOx coverages of less than one monolayer on the Al2O3 surface. (c) 2005 Elsevier Inc. All rights reserved.</p>},
	keywords = {absorption edge energy, Alumina, ethylbenzene, Nitrous oxide, oxidative dehydrogenation, polyvanadates, styrene, vanadia},
	issn = {0021-9517},
	doi = {10.1016/j.jcat.2005.01.010},
	author = {Shiju, N. R. and Anilkumar, Mettu and Mirajkar, Subhash P. and Gopinath, Chinnakonda S. and Rao, B. S. and Satyanarayana, C. V.}
}
@article {47076,
	title = {Utilizing the oxygen carrier property of cerium iron oxide for the low-temperature synthesis of 1,3-butadiene from 1-butene},
	journal = {Catalysis Letters},
	volume = {151},
	year = {2021},
	month = {OCT},
	pages = {3057-3066},
	type = {Article},
	abstract = {<p>Low-temperature oxidative dehydrogenation (ODH) of 1-butene to 1,3-butadiene is one of the challenging reactions in the polymer industry. Towards this a highly dispersed cerium iron oxide was synthesized by citrate gel combustion method and employed for the synthesis of 1,3-butadiene (BD) from 1-butene. The reaction was carried out at low temperature under an oxygen-free atmosphere in a continuous flow mode fixed bed reactor. A decrease in the lattice parameters observed from PXRD and high-resolution TEM analysis proved that iron occupies cerium sites in the crystal lattice. XPS, TPR, and oxygen uptake studies quantified the nature and abundance of different oxygen species. ODH was observed through consuming lattice oxygens. The vacancies generated could be filled by re-oxidation with an external supply of oxygen which will restore the catalytic activity demonstrating the Mars van Krevelen mechanism. [GRAPHICS] .</p>
},
	keywords = {1, 1-butene, 3-butadiene, Cerium, iron, Lattice oxygen, oxidative dehydrogenation},
	issn = {1011-372X},
	doi = {10.1007/s10562-020-03512-5, Early Access Date = FEB 2021},
	author = {Venugopalan, Aswathy T. and Kandasamy, Prabu and Gogoi, Pranjal and Ratneshkumar, Jha and Thirumalaiswamy, Raja}
}
