Spectroscopic witness from reactants to product: FTIR studies on selective mono-N-methylation of aniline on Cu1-xZnxFe2O4

Vijayaraj, Munusamy ; Gopinath, Chinnakonda S. (2004) Spectroscopic witness from reactants to product: FTIR studies on selective mono-N-methylation of aniline on Cu1-xZnxFe2O4 Journal of Catalysis, 226 (1). pp. 230-234. ISSN 0021-9517

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.jcat.2004.05.020

Abstract

An active N-methylation ferrospinel catalyst, Cu1-xZnxFe2O4, is reported for the first time. A mechanistic approach to selective mono-N-methylation of aniline on Cu1-xZnxFe2O4 is successfully explained by in situ temperature-dependent DRIFTS studies of reactants on the catalyst. Perpendicular orientation of aromatic rings of aniline, methyl group availability, an optimum metal-ion distribution on the catalyst surface, and a stable methyl group on Zn leads selectively to N-methylaniline (NMA) on Cu0.5Zn0.5Fe2O4. Desorption-limited kinetics is evident from NMA formation at low temperatures.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Cu1-xZnxFe2O4; Adsorbates Interaction; Heterogeneous Catalysis; IR Spectroscopy; N-methylation; Aniline; Reaction Mechanism
ID Code:61848
Deposited On:15 Sep 2011 12:12
Last Modified:15 Sep 2011 12:12

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