DSpace
 

EPrints@IIT Delhi >
Faculty Research Publicatons  >
Chemical Engineering >

Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/1463

Title: Catalytic conversion of methanol to gasoline range hydrocarbons
Authors: Zaidi, H A
Pant, K K
Keywords: HZSM-5
CuO/HZSM-5
CuO/ZnO/HZSM-5
ZnO/HZSM-5
Methanol conversion
Issue Date: 2004
Citation: Catalysis Today, 96(3), 155-160
Abstract: The catalytic conversion of methanol to hydrocarbons of gasoline range has been studied over HZSM-5, ZnO/HZSM-5, CuO/HZSM-5 and CuO/ZnO/HZSM-5. The selectivity of methanol conversion to hydrocarbon has been found to be a function of CuO/ZnO/HZSM-5 concentration. A comparison has been done to study the conversion and yield of different metal oxides doped on the catalyst. The catalysts were prepared by means of impregnation technique followed by heat treatment at 550 °C for 5 h. The copper and zinc oxide loading over HZSM-5 (Si/Al = 45) catalyst were 7 wt.% each. These catalysts were characterized by X-ray diffraction and surface area analysis. The performances of the catalysts were evaluated by conducting experiments in a fixed bed reactor (i.d.: 19 mm) made of stainless steel. Experiments were conducted at 1 atm and 400 °C at constant flow rate of methanol. The major products were ethylene, propylene, dimethyl ether, toluene, ethyl benzene, ethyl toluene, trimethyl benzene and tetra methylbenzene. Investigations have also been done to study the catalyst deactivation. The catalysts were mainly deactivated due to deposition of coke. Addition of ZnO over CuO/HZSM-5 significantly reduces the coke without affecting product yields. Over a ZnO/HZSM-5 catalyst, the coke formation was reduced compared to a CuO/HZSM-5 catalyst. ZnO/CuO/HZSM-5 enhanced the aromatics yield to 69 wt.% as compared to yield of 66.9 wt.% over ZnO/HZSM-5. The product compositions are compared and discussed.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/1463
Appears in Collections:Chemical Engineering

Files in This Item:

File Description SizeFormat
zaidicat2004.pdf514.05 kBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback