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Inne
Influence of palladium colloid synthesis procedures on catalytic activity in methoxycarbonylation reaction.
Autorzy
Rok wydania
2006
Czasopismo
Numer woluminu
239
Strony
272-281
DOI
10.1016/j.jcat.2006.02.002
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Palladium colloids were prepared by chemical reduction of an aqueous solution of palladium dichloride with the reducing agents pyrogallol, chromium(II) acetate, and hydrazine in the presence of polyvinylpyrrolidone (PVP) as a stabilizing agent. The colloids thus obtained were characterized by means of powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and energy-dispersive X-ray microanalysis (EDX). Their catalytic activity was studied in a test reaction, methoxycarbonylation of iodobenzene. The choices of reducing agent and reduction conditions enables to synthesize colloids with various mean nanoparticle sizes (ranging from 1.9 to 19.8 nm) and nanoparticle morphologies. These two factors play a decisive role from the standpoint of catalytic activity of the systems under study.
Słowa kluczowe
Pd colloid, nanaoparticles, Methoxycarbonylation, TEM, XRD
Adres publiczny
https://doi.org/10.1016/j.jcat.2006.02.002
Strona internetowa wydawcy
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