Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received November 24, 2010
Accepted March 11, 2011
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
Control of surface area and activity with changing precipitation rate in preparation of Cu-Zn based catalysts for dimethyl ether direct synthesis
School of Chemical Engineering & Technology, Yeungnam University, 214-1 Daedong, Gyeongsan, Gyeongbuk 712-749, Korea
Korean Journal of Chemical Engineering, October 2011, 28(10), 2076-2080(5), 10.1007/s11814-011-0061-1
Download PDF
Abstract
Cu-Zn based catalysts for the direct synthesis of dimethyl ether were prepared by the co-precipitation method, and the feeding rate of ammonium carbonate used as the precipitant was controlled in order to change the particle size of the active materials. SEM and XRD confirmed that the catalyst particles that were prepared have a small size when the precipitant is rapidly fed into the precursor solution. The crystal growth of the Cu-Zn based catalyst could be controlled_x000D_
by changing the feeding rate of the precipitant in the precipitation method, and the physical properties of the Cu-Zn based catalyst were improved by controlling the crystal growth rate in order to enhance the catalytic activity. The feeding rate of the precipitant solution was controlled in range of 1.5-10.0 ml/min in this study. When the feeding rate of precipitant was adjusted from 1.5 ml/min to 10.0 ml/min, the particle size of Cu-Zn catalysts decreased from 28 nm to 10 nm with increasing feeding rates of precipitant solution and their surface area increased from 28 m2/g to 80 m2/g. The conversion of CO obtained in the catalytic activity tests also increased from 13% to 60%. A high conversion of CO was obtained over the Cu-Zn based catalysts prepared by changing the feeding rate of the precipitate.
References
Brown DM, Bhatt BL, Hsiung TH, Catal. Today., 8, 279 (1991)
Ramos FS, de Farias AMD, Borges LEP, Monteiro JL, Fraga MA, Sousa-Aguiar EF, Appel LG, Catal. Today, 101(1), 39 (2005)
Aguayo AT, Erena J, Sierra I, Olazar M, Bilbao J, Catal. Today, 106(1-4), 265 (2005)
Ahn SH, Kim SH, Jung KB, Hahm HS, Korean J. Chem. Eng., 25(3), 466 (2008)
Shim HM, Lee SJ, Yoo YD, Yun YS, Kim HT, Korean J. Chem. Eng., 26(3), 641 (2009)
Li JL, Zhang XG, Inui T, Appl. Catal. A: Gen., 147(1), 23 (1996)
Fei JH, Yang MX, Hou ZY, Zheng XM, Energy Fuels, 18(5), 1584 (2004)
Qi GX, Zheng XM, Fei ZH, Hou ZY, J. Mol. Catal. A: Chem., 250, 138 (2001)
Kim EJ, Park NK, Han GB, Ryu SO, Lee TJ, Process Safety and Environmental Protection., 84(B6), 469 (2006)
Bang BM, Park NK, Han GB, Yoon SH, Lee TJ, Korean Chem. Eng. Res., 45(6), 566 (2007)
Ramos FS, de Farias AMD, Borges LEP, Monteiro JL, Fraga MA, Sousa-Aguiar EF, Appel LG, Catal. Today, 101(1), 39 (2005)
Aguayo AT, Erena J, Sierra I, Olazar M, Bilbao J, Catal. Today, 106(1-4), 265 (2005)
Ahn SH, Kim SH, Jung KB, Hahm HS, Korean J. Chem. Eng., 25(3), 466 (2008)
Shim HM, Lee SJ, Yoo YD, Yun YS, Kim HT, Korean J. Chem. Eng., 26(3), 641 (2009)
Li JL, Zhang XG, Inui T, Appl. Catal. A: Gen., 147(1), 23 (1996)
Fei JH, Yang MX, Hou ZY, Zheng XM, Energy Fuels, 18(5), 1584 (2004)
Qi GX, Zheng XM, Fei ZH, Hou ZY, J. Mol. Catal. A: Chem., 250, 138 (2001)
Kim EJ, Park NK, Han GB, Ryu SO, Lee TJ, Process Safety and Environmental Protection., 84(B6), 469 (2006)
Bang BM, Park NK, Han GB, Yoon SH, Lee TJ, Korean Chem. Eng. Res., 45(6), 566 (2007)
