NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.48A [2009] >
IJC-A Vol.48A(06) [June 2009] >


Title: Gas-phase catalytic synthesis of MTBE from MeOH and ButOH over various microporous H-zeolites
Authors: Zhang, Q
Xia, Q-H
Lu, X-H
Ma, X-T
Su, K-X
Keywords: Catalysis
Acid catalysis
Gas phase synthesis
Zeolites
H-zeolites
Microporous zeolites
Issue Date: Jun-2009
Publisher: CSIR
IPC CodeInt. Cl.8 B01J29/40; C10L1/85; C10L10/10
Abstract:  Several H-zeolites such as HZSM-5, HY, Hb, H-13X, H-K10 and HA have been used to catalyze the gas-phase synthesis of methyl tert-butyl ether from methanol and tert-butanol in a continuous fixed-bed reactor. The ascending sequence of Bronsted acidity is: H-K10 (0.86) < Hb (2.04) < H-13X (2.83) < HY (3.93) < HZSM-5 (5.22), which is appreciably different from the order of Lewis acidity: H-K10 (0.87) < HZSM-5 (1.15) < H-13X (1.75) < HY (4.94) < Hb (6.10). The optimal reaction temperature varies in the order: Amberlyst-15 (80-110 °C) Hb (80-90 °C) < HZSM-5 (120 °C) < HY (140-150 °C) < H-K10 (150 °C) << H-13X (220 °C), and is dependent on several factors. The Hb catalyst shows the best activity and on-stream stability (the selective conversion of >97.4 mol% ButOH to MTBE) at 80-90 °C (comparable to that of commercial Amberlyst-15), along with increasing time-on-stream up to 110 h at 90 °C. The highly selective conversion of ButOH to MTBE remains more or less constant on both the catalysts.
Page(s): 788-792
ISSN: O975-0975 (Online); 0376-4710 (Print)
Source:IJC-A Vol.48A(06) [June 2009]

Files in This Item:

File Description SizeFormat
IJCA 48A(6) 788-792.pdf256.9 kBAdobe PDFView/Open
 Current Page Visits: 1043 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 569865 since 06-Feb-2009  Last updated on 14-Aug-2014Webmaster: nopr@niscair.res.in