2013
DOI: 10.3390/catal3040978
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Investigation of the Deactivation Phenomena Occurring in the Cyclohexane Photocatalytic Oxidative Dehydrogenation on MoOx/TiO2 through Gas Phase and in situ DRIFTS Analyses

Abstract: Abstract:In this work, the results of gas phase cyclohexane photocatalytic oxidative dehydrogenation on MoO x /SO 4 /TiO 2 catalysts with DRIFTS analysis are presented. Analysis of products in the gas-phase discharge of a fixed bed photoreactor was coupled with in situ monitoring of the photocatalyst surface during irradiation with an IR probe. An interaction between cyclohexane and surface sulfates was found by DRIFTS analysis in the absence of UV irradiation, showing evidence of the formation of an organo-su… Show more

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Cited by 12 publications
(9 citation statements)
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“…In recent decades, traditional methods of stimulating catalyzed reactions (heating) new methods were added: photochemical initiation [67][68][69][70][71][72], microwave heating [73], electrocatalytic [74], and sonochemical [75] transformations.…”
Section: Definitionsmentioning
confidence: 99%
“…In recent decades, traditional methods of stimulating catalyzed reactions (heating) new methods were added: photochemical initiation [67][68][69][70][71][72], microwave heating [73], electrocatalytic [74], and sonochemical [75] transformations.…”
Section: Definitionsmentioning
confidence: 99%
“…However, the main deficiency for the practical applications of TiO 2 is limited by its large band-gap (3.2 eV), meaning that it can be only active under the UV light irradiation [16][17][18][19][20][21]. The main research objectives are to increase the photocatalytic performances of TiO 2 through the doping of its crystalline structure with non-metal ions that reduces the http://dx.doi.org/10.1016/j.apcatb.2015.01.039 0926-3373/© 2015 Elsevier B.V. All rights reserved.…”
Section: Introductionmentioning
confidence: 99%
“…The peak around 3379 cm −1 and the broad band centered around 3212 cm −1 were due to the free and bonding O-H stretching vibration of Ti−OH, respectively [27,28]. The peak at 1620 cm −1 was due to the O-H bending vibration of Ti−OH [16,22,[29][30][31][32][33]. The broad band centered around 3212 cm −1 in NaOH-modified TiOF 2 becomes broader than that in TiOF 2 , meaning that more O-H bonds or associated O-H appeared in NaOH-modified TiOF 2 .…”
Section: Phase Structures and Morphologymentioning
confidence: 99%