Intensified gas-phase hydrogenation of acetone to isopropanol catalyzed at metal-oxide interfacial sites

Influence of reduction temperature on Pt–ZrO2 interfaces for the gas-phase hydrogenation of acetone to isopropanol

“…2F). 21 The O v /O l ratios are 0.22 for 3Pt/ZrO 2 -100 and 0.32 for 3Pt/ZrO 2 -200, which coincides…”

“…Lastly, the total gas flow was at a rate of 90-110 mL min −1 and all the catalysts were of 80-120 mesh, hence, the external and internal diffusions could be eliminated. 21…”

“…Our previous work has elaborately shown that pure Pt/SiO 2 exhibited negligible catalytic activities, 21 irrespective of whether it was reduced or not, and hence, we mainly investigated ZrO 2 and Pt/ZrO 2 in this work. Meanwhile, control experiments tentatively showed that the reduced Pt/ CeO 2 catalyst with 3 wt% Pt content could offer sufficient Pt-CeO 2 interfaces for the gas phase acetone hydrogenation, 21 and hence, we initially prepared a 3Pt/ZrO 2 catalyst with 3 wt% Pt content and directly investigated the reduction behavior by the H 2 -TPR method to probe the Pt-ZrO 2 interface and provide evidence for reduction before the reaction. As shown in Fig.…”

“…Therefore, the Pt/ZrO 2 catalyst with 8-10 nm Pt NPs activating H 2 and rich O v (ref. 22) adsorbing acetone 21 was designed and used in this reaction to investigate the relationship between reduction temperatures and catalytic performances. This work elucidates the relationship between Pt 0 content, O v content, and catalytic activities, beneficial for the investigation of the critical role played by Pt-oxide interfaces in catalytic hydrogenation reactions.…”

Preparation of Biochar with Developed Mesoporous Structure from Poplar Leaf Activated by KHCO3 and Its Efficient Adsorption of Oxytetracycline Hydrochloride

“…To understand the detailed bonding configuration of the oxygen element, high-resolution O1s spectra were recorded ( Figure S2, Supplementary Materials ). The splitting O1s peaks of biochars at 530.4, 531.7, and 532.8 eV are attributed to the lattice oxygen (C=O) [ 43 ], carboxyl oxygen (−COOH), and hydroxy oxygen (−OH) [ 44 , 45 ], respectively. Among them, the proportion of carboxyl oxygen and hydroxyl oxygen is more than 90%, which may promote the adsorption performance of biochars.…”