Aerobic oxidation of benzyl alcohol: Influence from catalysts basicity, acidity, and preparation methods

Bimetallic Pd‐Au Nanoparticles Supported Monodisperse Porous Silica Microspheres as an Efficient Heterogenous Catalyst for Fast Oxidation of Benzyl Alcohol

“…[24a,29,35] The determined value for activation energy is almost the same with that found for Pd supported on magnetic SBA-15 catalyst. [29] Only, a lower activation energy (i. e. 10.6 kJ/mol) was reported for BzOH oxidation performed using Pd@CuBi 2 O 4 photocatalyst with visible light illumination. [35a] The comparison in Table 5 indicated that a good synergistic effect based on the electronic interaction due to the drawing of electron density from Pd atoms by Au atoms with higher electronegativity ChemistrySelect located on the large surface of mesoporous SiO 2 microspheres was obtained by PdAu@APTES@SiO 2 catalyst.…”

3D printed catalytic reactors for aerobic selective oxidation of benzyl alcohol into benzaldehyde in continuous multiphase flow

“…Among these intermediates, benzaldehyde is one of the most produced molecules in synthesis processes involving the oxidation of alcohols, due to the rising demand for its derivatives 6,7 . To evaluate the efficiency of the new catalyst design, benzyl alcohol oxidation to benzaldehyde was used as a model reaction [8][9][10] ; a well-referenced reaction for iron, cobalt and palladium-based catalysts [8][9][10][11][12][13][14][15][16] . Significant advances have been made in applying various metals and supports to the selective oxidation of benzyl alcohol, mostly in batch systems and less commonly in lab-scale flow reactor systems 17,18 .…”

“…This involves the use of metal promoters such as ruthenium [18][19][20] , platinum 17,21 , rhodium 22 , copper 23 , chromium 24 , bimetallic gold-palladium and gold catalyst 15,[21][22][23][24] . Furthermore, in order to develop a process with greener credentials, we used molecular oxygen in combination with an aqueous solvent 11,[25][26][27] .…”

A Novel Pd-P Nano-Alloy Supported on Functionalized Silica for Catalytic Aerobic Oxidation of Benzyl Alcohol

“…Mesoporous silica materials proved to be one of the most beneficial supports for metal NP catalysts owing to their high thermal and chemical stability, great surface area, tunable pore size, and provision of highly dispersed active sites on the final catalyst [22][23][24]. Catalysts manufactured by supporting palladium NPs on silica have been utilized in numerous reactions such as Suzuki coupling reactions, C-H activation [25,26], and aerobic oxidation of benzyl alcohol [27]. The mildly acidic surface of the pristine silica acts as a barrier for absorption and diffusion of the palladium and/or its precursors; therefore, functionalizing the surface of the support to increase the basicity, is deemed necessary to improve the metal deposition and to obtain smaller particle size [12,22,28,29].…”