A novel pd-p nano-alloy supported on functionalized silica for catalytic aerobic oxidation of benzyl alcohol

TitleA novel pd-p nano-alloy supported on functionalized silica for catalytic aerobic oxidation of benzyl alcohol
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2022
AuthorsMoeini, S.S., Laverdura U.P., Marconi E., Lisi N., Serra Emanuele, Chierchia R., Luisetto I., Tuti S., and Tofani D.
JournalCatalysts
Volume12
ISSN20734344
Abstract

Catalytic aerobic oxidation of benzyl alcohol (BnOH) to benzaldehyde (PhCHO) over supported noble metal catalysts has grabbed the attention of researchers due to the critical role of PhCHO in numerous industrial syntheses. In the present study, a novel catalyst, Pd-P alloy supported on aminopropyl-functionalized mesoporous silica (NH2-SiO2), was prepared through in situ reduction and characterized by BET-BJH analysis, SEM, TEM, XRD, FTIR, TG-DTA, and XPS. Chemical properties and catalytic performance of Pd-P/NH2-SiO2 were compared with those of Pd0 nano-particles (NPs) deposited on the same support. Over Pd-P/NH2-SiO2, the BnOH conversion to PhCHO was much higher than over Pd0/NH2-SiO2, and significantly influenced by the nature of solvent, reaching 57% in toluene at 111 °C, with 63% selectivity. Using pure oxygen as an oxidant in the same conditions, the BnOH conversion increased up to 78%, with 66% selectivity. The role of phosphorous in improving the activity may consist of the strong interaction with Pd that favours metal dispersion and lowers Pd electron density. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Notes

cited By 0

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85121584262&doi=10.3390%2fcatal12010020&partnerID=40&md5=6650d5347d4f0546b0281f91cf55a432
DOI10.3390/catal12010020