Spontaneous formation and catalysis of highly dispersed Pd0 on *BEA zeolite
نویسندگان
چکیده
Thermal treatment of the Pd complex bearing triphenylphosphine (PPh3) and acetate as ligands (bis(triphenylphosphine)palladium(II) diacetate, Pd(PPh3)2(OAc)2) in toluene resulted formation aggregated nanoparticles (Pd-NPs). The dispersion could be achieved after addition *BEA zeolite during thermal Pd(PPh3)2(OAc)2 (Pd/*BEA). Further, Suzuki cross-coupling was performed on prepared catalysts utilizing 4′-chloroacetophenene phenylboronic acid substrates. It observed that catalyst, which with support, active reactions among various supports. product yield increased decreasing Pd-loading Pd/*BEA; highest obtained when ~0.1 wt% Pd-loaded utilized. inferred fine particles close to external surface PPh3 were cross-coupling. Contrarily, alone Pd-NPs almost inactive reaction.
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ژورنال
عنوان ژورنال: Microporous and Mesoporous Materials
سال: 2021
ISSN: ['1873-3093', '1387-1811']
DOI: https://doi.org/10.1016/j.micromeso.2021.111336