Nanoscaled reusable palladium catalyst supported on chitosan hybrid composite microcapsules reinforced with ZnO nanoparticles for Heck coupling reactions
Yükleniyor...
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer Science and Business Media B.V.
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
In the present work, a novel nanocatalyst system (Pd@CS–ZnO) was developed by adorning palladium nanoparticles on the hybrid nanocomposite consisting of chitosan and ZnO nanoparticles which are designed as a suitable stabilizer. Morphological/structural features of Pd@CS–ZnO were investigated by FT-IR, TEM, SEM, XRD, BET and EDS analyses. The catalytic efficiency of Pd@CS–ZnO was then assessed as a heterogeneous nanocatalyst against Heck coupling reaction. The tests revealed that Pd@CS–ZnO was a useful nanocatalyst which can couple the reactions of various aryl halides (I, Br, Cl) with styrene. Pd@CS–ZnO nanocatalyst proved to be easily separated with filtration and reapplied for six consecutive reaction runs. Additionally, it was found that the chemical structure of Pd@CS–ZnO was maintained during recycling tests, showing that it has high chemical stability. Furthermore, the designed catalyst system offers other benefits such as (1) cost efficiency, (2) eco-friendly nature, (3) facile preparation, (4) moisture/air insensitivity, (5) easy work up, and (6) high yields.
Açıklama
Anahtar Kelimeler
Chitosan, Heck Reaction, ZnO, Palladium
Kaynak
Cellulose
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
29
Sayı
14
