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Title: Catalytic oxidative transformation of benzyl alcohol and cyclohexanol over mesoporous Mn-MCM-41, and Mo-MCM-41 and Mo(Im), Mn-MCM-41 molecular sieves
Authors: Pandurangan, A
Vetrivel, S
Anthea, B
Keywords: Molecular sieves;Hydrothermal method;Wet chemical method;XRD;TGA;FT-IR;ESR
Issue Date: Mar-2004
Publisher: NISCAIR-CSIR, India
IPC Code: B01J29/035, C07B31/00
Abstract: Mesoporous Mn-MCM-41 and Mo-MCM-41 molecular sieves were synthesized by hydrothermal method using manganese chloride, ammonium molybdate and sodium metasilicate as the source for Mn, Mo and Si. Mo(lm), Mn-MCM-41 was synthesized by impregnating Mn-MCM-41 with ammonium molybdate by wet chemical method. These materials were characterized by XRD, TGA, FT-IR and ESR techniques. The vapour phase oxidation of benzyl alcohol and cyclohexanol was attempted over these molecular sieves as a probe reaction. The principal products were benzaldehyde and cyclohexanone. The activity of Mn-MCM-41 was found to be better than the other two catalysts. The influence of time on stream was studied at 300°C for both the reactions over Mn-MCM-41 and Mo-MCM-41 molecular sieves. The conversion decreased very slightly with increase in time on stream.
Page(s): 248-253
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.11(2) [March 2004]

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