Surface capped silver nanoparticles over anatase titania: An efficient catalyst for aromatic nitration reactions

Viswanathan Suraja, Zahira Yaakob, Narayanan Binitha, Ali Ebshish, Koodathil Ranjana

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Efficient catalysts for the nitration of benzene are prepared by surface capping of Ag nanoparticles using glycerol and urea with their subsequent loading over anatase titania. Herein glucose was used as an environmentally benign reducing agent for the silver ions. The catalyst was characterized and its catalytic activity was evaluated in the low temperature preparation of nitrobenzene. Ag nanoparticle loading gives rise to improved performance when compared to bare anatase titania. The influence of stabilizers and the percentage metal loading of Ag on the catalytic activity was investigated. The increased reactivity of titania seen after Ag nanoparticle loading may be due to the presence of highly dispersed nano sized surface capped Ag. Among the two capping agents studied, glycerol provides maximum efficiency for a short reaction time. These new generation catalysts appear to be an efficient alternative for the conventional use of environmentally hazardous sulfuric acid catalyst. The side reactions are found to be minimal over the present catalytic systems which lead to excellent nitrobenzene selectivity.

Original languageEnglish
Pages (from-to)361-371
Number of pages11
JournalReaction Kinetics, Mechanisms and Catalysis
Volume105
Issue number2
DOIs
Publication statusPublished - 2012

Fingerprint

nitration
Nitration
Silver
anatase
Titanium dioxide
titanium
Titanium
silver
Nanoparticles
catalysts
nanoparticles
Catalysts
Nitrobenzene
nitrobenzenes
glycerols
Glycerol
catalytic activity
Catalyst activity
Reducing agents
sulfuric acid

Keywords

  • Benzene nitration
  • Silver nanoparticle
  • Surface capping
  • Titania

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

Surface capped silver nanoparticles over anatase titania : An efficient catalyst for aromatic nitration reactions. / Suraja, Viswanathan; Yaakob, Zahira; Binitha, Narayanan; Ebshish, Ali; Ranjana, Koodathil.

In: Reaction Kinetics, Mechanisms and Catalysis, Vol. 105, No. 2, 2012, p. 361-371.

Research output: Contribution to journalArticle

Suraja, Viswanathan ; Yaakob, Zahira ; Binitha, Narayanan ; Ebshish, Ali ; Ranjana, Koodathil. / Surface capped silver nanoparticles over anatase titania : An efficient catalyst for aromatic nitration reactions. In: Reaction Kinetics, Mechanisms and Catalysis. 2012 ; Vol. 105, No. 2. pp. 361-371.
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