Synthesis, characterization, and reactivity of Au/MCM-41 catalysts prepared by homogeneous deposition–precipitation (HDP) method for vapor phase oxidation of benzyl alcohol

• Published in: Materials research bulletin 2015-01, Vol.61, p.105-112
• Main Authors: Kumar, Ashish, Kumar, Vanama Pavan, Vishwanathan, Venkataraman, Chary, Komandur V.R.
• Format: Article
• Language: English
• Subjects: A. Metals; B. Chemical synthesis; C. Transmission electron microscopy (TEM); C. X-ray diffraction; D. Catalytic properties
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/j.materresbull.2014.10.013

[Display omitted] •The vapor phase benzyl alcohol (PhCH2OH) oxidation was investigated over Au/MCM-41catalysts under aerobic conditions.•Au/MCM-41catalysts were prepared by homogeneous deposition–precipitation (HDP) method.•2wt% Au/MCM-41catalyst exhibits high activity for PhCH2OH oxidation.•XPS results suggest that the presence of Au (0) on mesoporous MCM-41.•The catalytic performances were significantly affected by the morphology and surface active sites of Au nanoparticles on MCM-41 during PhCH2OH oxidation. The vapor phase oxidation of benzyl alcohol was investigated over Au/MCM-41 catalysts under aerobic conditions. The catalysts were prepared by homogeneous deposition–precipitation (HDP) method. The physico-chemical properties of the catalysts were investigated by XRD, TEM, BET surface area, CO-chemisorption, and XPS techniques. The influence of metal, nature of the support, the metal–support interactions, the catalytic activity, and stability of the Au/MCM-41 catalysts were investigated. The conversion of benzyl alcohol was increasing with decrease in the size of Au nanoparticles. Au/MCM-41 catalysts with smaller Au nanoparticles had a beneficial effect on the catalytic properties during the oxidation of benzyl alcohol.