Promoted partial oxidation activity of supported Ag catalysts in the gas-phase catalytic oxidation of benzyl alcohol

Oxidation of Alcohols with Molecular Oxygen

“…In the oxidation of benzyl alcohol to benzaldehyde on Ag, Cu, and Co catalysts, the selectivities were attractive only at low conversion [22][23][24][25]. Nevertheless, these studies uncovered some important details of the reaction mechanism and the nature of the active sites.…”

“…Nevertheless, these studies uncovered some important details of the reaction mechanism and the nature of the active sites. It was proposed that, on supported Ag catalysts, the active sites were Ag + species on the surface of metallic silver particles [25]. The considerable enhancement in catalytic activity induced by calcination at high temperature, the use of basic support, and the addition of alkali metal promoters was correlated with the more facile reduction of bulk silver to Ag 0 .…”

Novel microfibrous‐structured silver catalyst for high efficiency gas‐phase oxidation of alcohols

“…Among them, the gas-phase selective oxidation of alcohols shows great potential to develop efficient, cost-effective, and green processes for the production of carbonyl compounds. [8][9][10][11][12][13] It is desirable to significantly intensify the reaction heat removal from the catalyst bed, and meanwhile, to suppress the thermal cracking and over oxidation of the alcohols (especially the large molecules). A significant challenge facing this effort is the development of high-performance catalyst and/or new-type reactor with unique combination of excellent heat conductivity and high low-temperature activity/selectivity.…”

“…A significant challenge facing this effort is the development of high-performance catalyst and/or new-type reactor with unique combination of excellent heat conductivity and high low-temperature activity/selectivity. Some silver-based catalysts including electrolytic silver and supported silver catalysts, have been demonstrated recently for the selective oxidation of alcohols [8][9][10][11][12][13] in the Correspondence concerning this article should be addressed to Y. Lu at ylu @chem.ecnu.edu.cn. packed bed reactor.…”

“…8,10 The supported silver catalysts using the carriers such as Al 2 O 3 , SiO 2 , and SiC, have better catalytic activity at relatively low temperatures in the packed bed reactor. 9 However, their weak thermal conductivity easily generates partial hotspots in reaction beds for the strongly exothermic gas-phase selective oxidation of alcohols. This is not only a main cause of the catalyst degradation but also a hidden danger.…”