Palladium-loaded oxidized diamond catalysis for the selective oxidation of alcohols

In Situ PM-IRRAS Study of Liquid-Phase Benzyl Alcohol Oxidation on Palladium

“…A similar (ca. 50%) selectivity was also obtained using diamond-supported Pd catalysts under anaerobic conditions and explained by the disproportionation . Our results showed a large amount of toluene formation, but the selectivity toward benzaldehyde and toluene was not equal.…”

“…Earlier investigations of benzyl alcohol oxidation reported toluene as a major byproduct with up to 50% selectivity. ,, A recent study on the same reaction employing Pd catalysts on a rather-inert diamond support showed a similar (ca. 50%) selectivity under anaerobic conditions, while the selectivity was considerably higher under aerobic conditions . So far, toluene has not been detected during the reaction by in situ IR studies, and its formation was only confirmed ex situ by gas chromatography.…”

In Situ PM-IRRAS Study of Liquid-Phase Benzyl Alcohol Oxidation on Palladium

“…A similar (ca. 50%) selectivity was also obtained using diamond-supported Pd catalysts under anaerobic conditions and explained by the disproportionation . Our results showed a large amount of toluene formation, but the selectivity toward benzaldehyde and toluene was not equal.…”

“…Earlier investigations of benzyl alcohol oxidation reported toluene as a major byproduct with up to 50% selectivity. ,, A recent study on the same reaction employing Pd catalysts on a rather-inert diamond support showed a similar (ca. 50%) selectivity under anaerobic conditions, while the selectivity was considerably higher under aerobic conditions . So far, toluene has not been detected during the reaction by in situ IR studies, and its formation was only confirmed ex situ by gas chromatography.…”

Supported Gold Nanoparticles as Catalysts in Peroxidative and Aerobic Oxidation of 1-Phenylethanol under Mild Conditions

“…Catalysts based on palladium, silver, and ruthenium, exceeded the activity of previous catalyst systems, as expected, and were not deactivated during the recycling tests [16,17]. However, the disadvantages in the case of silver and palladium catalysts would include the formation of by-products [16,18,19], and a high ratio of ruthenium to alcohol needed when using ruthenium catalysts [20].…”

Smart Design of Small Pd Nanoparticles Confined in Hollow Carbon Nanospheres with Large Center‐Radial Mesopores

“…The XPS spectrum of the Pd 3d core level in Figure d exhibits two pronounced bands at binding energies ( BE s) of 335.7 and 340.9 eV, which are attributed to Pd 0 3d 5/2 and 3d 3/2 photoelectrons, respectively. The presence of two weak satellite peaks at BE = 337.6 and 342.8 eV, ascribed to 3d 3/2 and 3d 5/2 of PdO, suggests a weak and partial oxidation of the Pd NPs, as is often observed for Pd‐based nanocomposites . The Pd 0 /Pd II molar ratio is calculated to be ca.…”

In Situ PM-IRRAS Study of Liquid-Phase Benzyl Alcohol Oxidation on Palladium

“…A similar (ca. 50%) selectivity was also obtained using diamond-supported Pd catalysts under anaerobic conditions and explained by the disproportionation . Our results showed a large amount of toluene formation, but the selectivity toward benzaldehyde and toluene was not equal.…”

“…Earlier investigations of benzyl alcohol oxidation reported toluene as a major byproduct with up to 50% selectivity. ,, A recent study on the same reaction employing Pd catalysts on a rather-inert diamond support showed a similar (ca. 50%) selectivity under anaerobic conditions, while the selectivity was considerably higher under aerobic conditions . So far, toluene has not been detected during the reaction by in situ IR studies, and its formation was only confirmed ex situ by gas chromatography.…”

Supported Gold Nanoparticles as Catalysts in Peroxidative and Aerobic Oxidation of 1-Phenylethanol under Mild Conditions

“…Catalysts based on palladium, silver, and ruthenium, exceeded the activity of previous catalyst systems, as expected, and were not deactivated during the recycling tests [16,17]. However, the disadvantages in the case of silver and palladium catalysts would include the formation of by-products [16,18,19], and a high ratio of ruthenium to alcohol needed when using ruthenium catalysts [20].…”

Smart Design of Small Pd Nanoparticles Confined in Hollow Carbon Nanospheres with Large Center‐Radial Mesopores

“…The XPS spectrum of the Pd 3d core level in Figure d exhibits two pronounced bands at binding energies ( BE s) of 335.7 and 340.9 eV, which are attributed to Pd 0 3d 5/2 and 3d 3/2 photoelectrons, respectively. The presence of two weak satellite peaks at BE = 337.6 and 342.8 eV, ascribed to 3d 3/2 and 3d 5/2 of PdO, suggests a weak and partial oxidation of the Pd NPs, as is often observed for Pd‐based nanocomposites . The Pd 0 /Pd II molar ratio is calculated to be ca.…”

In Situ PM-IRRAS Study of Liquid-Phase Benzyl Alcohol Oxidation on Palladium

“…A similar (ca. 50%) selectivity was also obtained using diamond-supported Pd catalysts under anaerobic conditions and explained by the disproportionation . Our results showed a large amount of toluene formation, but the selectivity toward benzaldehyde and toluene was not equal.…”

“…Earlier investigations of benzyl alcohol oxidation reported toluene as a major byproduct with up to 50% selectivity. ,, A recent study on the same reaction employing Pd catalysts on a rather-inert diamond support showed a similar (ca. 50%) selectivity under anaerobic conditions, while the selectivity was considerably higher under aerobic conditions . So far, toluene has not been detected during the reaction by in situ IR studies, and its formation was only confirmed ex situ by gas chromatography.…”

Supported Gold Nanoparticles as Catalysts in Peroxidative and Aerobic Oxidation of 1-Phenylethanol under Mild Conditions

“…Catalysts based on palladium, silver, and ruthenium, exceeded the activity of previous catalyst systems, as expected, and were not deactivated during the recycling tests [16,17]. However, the disadvantages in the case of silver and palladium catalysts would include the formation of by-products [16,18,19], and a high ratio of ruthenium to alcohol needed when using ruthenium catalysts [20].…”

Smart Design of Small Pd Nanoparticles Confined in Hollow Carbon Nanospheres with Large Center‐Radial Mesopores

“…The XPS spectrum of the Pd 3d core level in Figure d exhibits two pronounced bands at binding energies ( BE s) of 335.7 and 340.9 eV, which are attributed to Pd 0 3d 5/2 and 3d 3/2 photoelectrons, respectively. The presence of two weak satellite peaks at BE = 337.6 and 342.8 eV, ascribed to 3d 3/2 and 3d 5/2 of PdO, suggests a weak and partial oxidation of the Pd NPs, as is often observed for Pd‐based nanocomposites . The Pd 0 /Pd II molar ratio is calculated to be ca.…”