Soft hydrogels for dual use: Template for metal nanoparticle synthesis and a reactor in the reduction of nitrophenols
Yükleniyor...
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A novel hydrogel based on poly(sulfopropylmethacrylate) (p(SPM) with different crosslinking degrees was synthesized and characterized. The prepared hydrogels were for the first time, utilized for in situ metal nanoparticle preparation such as Ni, Co, and Cu and employed as a reaction media in catalytic reduction of 4-nitrophenol (4-NP), and 2-nitrophenol (2-NP) to 4-aminophenol and 2-aminophenol, respectively. The experimental parameters that effect reduction rates such as temperature and the amount of catalyst were investigated. The kinetics of the reduction reaction of nitro compounds under different reaction conditions were investigated to determine the activation parameter. Activation energies were found as 33.86 kJ mol(-1) and 24.96 kJ mol(-1) for 4-NP and 2-NP, respectively. It was found that hydrogel-Cu composites can provide 98% activity even at the end of the 7th repetitive usage. (c) 2011 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Soft reactor, Smart hydrogel, 4-nitro reduction, Catalysis, Composites
Kaynak
Journal of Non-Crystalline Solids
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
358
Sayı
4
