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Oxidation of benzyl alcohol to benzaldehyde over MnOx/sepiolite catalysts

Nguyen Thi Nhu, Quach Toan Anh, Nguyen Tien Thao


MnOx/sepiolite catalysts were synthesized by precipitation method accompanied by the calcination at 4100C. The prepated solids have been characterized by XRD, SEM, TPR-H2. MnOx particles were deposited on the surface of the sepiolite fibers and act as active sites for  the oxidation of benzyl alcohol using tert-butyl hydroperoxide (TBHP) as an oxidizing agent. The catalysts showed a good conversion of benzyl alcohol to benzaldehyde at 60 oC. The influence of the reaction time and reaction temperature was considered.

Keywords. MnOx/sepiolite, oxidation, benzyl alcohol conversion, TBHP, benzaldehyde.


MnOx/sepiolite, oxidation, benzyl alcohol conversion, TBHP, benzaldehyde

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F. Bruhne and E. Wright. Benzaldehyde, Ullmann's Encyclopedia of Industrial Chemistry (2000).

R. A. Sheldon, I. Arends, and U. Hanefeld. Green Chemistry and Catalysis, Wiley-VCH VerlagGmbH& Co.KGaA (2007).

Caravati M. et al. Continuous catalytic oxidation of solid alcohols in supercritical CO2: A parametric and spectroscopic study of the transformation of cinnamyl alcohol over Pd/Al2O3, J. Catal., 240(2), 126-136 (2006).

Choudhary, V. R., R. Jha, and P. Jana. Solvent-free selective oxidation of benzyl alcohol by molecular oxygen over uranium oxide supported nano-gold catalyst for the production of chlorine-free benzaldehyde, Green Chem., 9(3), 267-272 (2007).

Dimitratos N. et al. Pd and Pt catalysts modified by alloying with Au in the selective oxidation of alcohols, J. Catal., 244(1), 113-121 (2006).

S.K. Jana, Y. Kubota, T. Tatsumi. High activity of Mn-MgAl hydrotalcite in heterogeneously catalyzed liquid-phase selective oxidation of alkylaromatics to benzylic ketones with 1 atm of molecular oxygen, J. Catal., 247, 214-222 (2007).

Letaief S., Grant S., and Detellier C. Phenol acetylation under mild conditions catalyzed by gold nanoparticles supported on functional pre-acidified sepiolite, Appl. Clay Sci., 53, 236-243 (2011).

Su C. et al. Adsorptive removal of methylene blue by CuO-acid modified sepiolite as effective adsorbent and its regeneration with high-temperature gas stream, Water Science and Technology, 74(4), 844-851 (2016).

Wu G. et al. Catalytic oxidation of benzyl alcohol over manganese oxide supported on MCM-41 zeolite, Chem. Eng. J., 271, 14-22 (2015).

Hernández W. Y. et al. Cu-modified cryptomelane oxide as active catalyst for CO oxidation reactions, App. Catal. B, 123-124, 27-35 (2012).

Pozan G. S. Effect of support on the catalytic activity of manganese oxide catalyts for toluene combustion, J. Hazar. Mater., 221-222, 124-130 (2012).

Qian K. et al. Structure–activity relationship of CuO/MnO2 catalysts in CO oxidation, Appl. Surf. Sci., 273, 357-363 (2013).

Tian H. et al. Highly active manganese oxide catalysts for low-temperature oxidation of formaldehyde, Micro. Meso. Mater., 151, 397-402 (2012).

Kim S. C. and W. G. Shim. Catalytic combustion of VOCs over a series of manganese oxide catalysts, Appl. Catal. B, 98(3-4), 180-185 (2010).

Santos V. P. et al. The role of lattice oxygen on the activity of manganese oxides towards the oxidation of volatile organic compounds, Appl. Catal. B, 99(1-2), 353-363 (2010).

Li J. et al. Dispersion–precipitation synthesis of

nanorod Mn3O4 with high reducibility and the catalytic complete oxidation of air pollutants, Catal. Commun., 31, 52-56 (2013).

Carnö J. et al. Mixed manganese oxide/platinum catalysts for total oxidation of model gas from wood boilers, Appl. Catal. A, 155(2), 265-281 (1997).

Trawczyński, J., B. Bielak, and W. Miśta. Oxidation of ethanol over supported manganese catalysts-effect of the carrier, Appl. Catal. B, 55(4), 277-285 (2005).

Behera G. C., Parida K. M. Liquid phase catalytic oxidation of benzyl alcohol to benzaldehyde over vanadium phosphate catalyst, Appl., Catal. A, 413-414, 245-253 (2012).

Mahdavi V., Hasheminasab H. R. Vanadium phosphorus oxide catalyst promoted by cobalt doping for mild oxidation of benzyl alcohol to benzaldehyde in the liquid phase, Appl. Catal. A, 482, 189-197 (2014).


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