Activity of Aniline Methylation over Fe-Cu-Cr Ternary Spinel Systems

Reni George; Kochurani George; Sankaran Sugunan

doi:10.9767/bcrec.9.1.5169.39-44

DOI: https://doi.org/10.9767/bcrec.9.1.5169.39-44

Activity of Aniline Methylation over Fe-Cu-Cr Ternary Spinel Systems

Reni George, Kochurani George, Sankaran Sugunan

Department of Applied Chemistry, Cochin University of Science and Technology, Kochi-682022, Kerala, India

Received: 18 Jul 2013; Revised: 5 Nov 2013; Accepted: 1 Dec 2013; Available online: 12 Mar 2014; Published: 30 Apr 2014.

Editor(s): Istadi Istadi

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Abstract

A series of spinels having thegeneral formula CuCr2-xFexO4 with x=0.25,0.75, 1.25, 1.75 were prepared by co-precipitation method. The catalysts werecharacterized by various physico-chemical methods like XRD, BET, UV-DRS, SEM,EDX, TPD etc. The reaction of aniline with methanol was studied in a fixed-bedreactor system as a potential source for the production of various methylanilines. It was observed that systems possessing low ‘x’ values are highlyselective and active for N-monoalkylation of aniline leading toN-methylaniline. Reaction parameters were properly varied to optimize thereaction conditions for obtaining N-methylaniline selectively and in betteryield. Among the systems CuCr1.75Fe0.25O4 isremarkable due to its very high activity and excellent stability. Under theoptimized conditions N-methylaniline selectivity exceeded 91%. CuCr1.25Fe0.75O4gives better conversion than CuCr1.75Fe0.25O4in CuCr2-xFexO4 series. The Lewis acid sitesof the catalysts are mainly responsible for the good catalytic performance. © 2014 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0)

Keywords: aniline methylation; spinels system; Fe-Cu-Cr; co-precipitation; alkylation

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Section: Original Research Articles

Language : EN

In 2014: BCREC Volume 9 Issue 1 Year 2014 (April 2014)

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