Reactors, Kinetics, and Catalysis

Activated carbon supported silicotungstic acid catalysts for ethyl-tert-butyl ether synthesis

  1. Levent Degirmenci1,
  2. Nuray Oktar2,*,
  3. Gulsen Dogu2

Article first published online: 15 FEB 2011

DOI: 10.1002/aic.12524

Issue

AIChE Journal

AIChE Journal

Volume 57, Issue 11, pages 3171–3181, November 2011

Additional Information

How to Cite

Degirmenci, L., Oktar, N. and Dogu, G. (2011), Activated carbon supported silicotungstic acid catalysts for ethyl-tert-butyl ether synthesis. AIChE J., 57: 3171–3181. doi: 10.1002/aic.12524

Author Information

  1. 1

    Chemical and Process Engineering Dept., Bilecik University, 11210 Bilecik, Turkey

  2. 2

    Chemical Engineering Dept., Gazi University, 06570 Maltepe, Ankara, Turkey

*Chemical Engineering Dept., Gazi University, 06570 Maltepe, Ankara, Turkey

Publication History

  1. Issue published online: 10 OCT 2011
  2. Article first published online: 15 FEB 2011
  3. Accepted manuscript online: 22 DEC 2010 04:23PM EST
  4. Manuscript Revised: 30 NOV 2011
  5. Manuscript Received: 19 JUL 2010

Funded by

  • Gazi University Research Fund. Grant Numbers: BAP 06/2006-23, BAP 06/2007-30
  • TUBITAK. Grant Number: 106M287

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Keywords:

  • ETBE;
  • activated carbon;
  • STA;
  • Cs-STA;
  • catalyst

Abstract

Vapor phase ethyl-tert-butyl ether (ETBE) production was conducted in the presence of Cesium salts of silicotungstic acid (Cs-STA), activated carbon supported silicotungstic acid (AC-STA), and activated carbon supported Cesium salts of silicotungstic acid (AC-Cs-STA) catalysts. Isobutene (IB) conversion to ETBE at 373 K were determined as 0.16 and 0.2 for STA and AC-STA catalysts on constant space time basis. This increase of activity is one of the highlights of this study considering that STA loading in AC-STA catalysts had been adjusted to 40%. IB conversion to ETBE obtained at 373 K in the presence of AC-STA catalyst was found to be close to equilibrium. Stability of the synthesized catalysts were tested by applying a washing procedure with ethanol. Repeated ETBE synthesis with thoroughly washed samples indicated quite stable and active catalyts. © 2011 American Institute of Chemical Engineers AIChE J, 2011

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