Articles & Issues

Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 2, 2009
Accepted May 4, 2009

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.

All issues

Effect of initial solution apparent pH on the performance of submerged hybrid system for the p-nitrophenol hydrogenation

Rizhi Chen Yan Du¹ Weihong Xing Wanqin Jin^†

State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China ¹College of Environmental Sciences, Nanjing University of Technology, Nanjing 210009, China

wqjin@njut.edu.cn

Korean Journal of Chemical Engineering, November 2009, 26(6), 1580-1584(5), 10.1007/s11814-009-0273-9

Download PDF

Abstract

Coupling nanocatalysis with ceramic membrane separation can solve the problem of nanocatalyst separation in situ from a reaction mixture. A submerged hybrid system combining nanocatalysis and ceramic membrane separation was designed for the liquid phase hydrogenation of p-nitrophenol to p-aminophenol, and the effect of initial solution apparent pH (pHa) on the performance of submerged hybrid system was investigated in detail. It is demonstrated that as the initial solution pHa is adjusted from 4.5 to 7.5, the catalytic stability of nano-sized nickel is remarkably improved, possibly because the formation of impurity on the nickel surface can be restrained at weak alkaline condition, while the catalytic activity and selectively almost do not change. The membrane permeability is not affected significantly by the initial solution pHa.

Keywords

Apparent pH Hybrid System Ceramic Membrane p-Nitrophenol Catalytic Hydrogenation Nano-sized Nickel

References

Du Y, Chen HL, Chen RZ, Xu NP, Chem. Eng. J., 125(1), 9 (2006)
Rode CV, Vaidya MJ, Jaganathan R, Chaudhari RV, Chem. Eng. Sci., 56(4), 1299 (2001)
Rode CV, Vaidya MJ, Chaudhari RV, Org. Process Res. Dev., 3, 465 (1999)
Chen RZ, Du Y, Xing WH, Xu NP, Chin. J. Chem. Eng., 14(5), 665 (2006)
Vaidya MJ, Kulkarni SM, Chaudhari RV, Org. Process Res. Dev., 7, 202 (2003)
Du Y, Chen HL, Chen RZ, Xu NP, Appl. Catal. A: Gen., 277(1-2), 259 (2004)
Zhong ZX, Xing WH, Jin WQ, Xu NP, AIChE J., 53(5), 1204 (2007)
Lee SA, Choo KH, Lee CH, Lee HI, Hyeon T, Choi W, Kwon HH, Ind. Eng. Chem. Res., 40(7), 1712 (2001)
Meng YB, Huang X, Yang QH, Qian Y, Kubota N, Fukunaga S, Desalination, 181(1-3), 121 (2005)
Thiruvenkatachari R, Vigneswaran S, Moon IS, Korean J. Chem. Eng., 25(1), 64 (2008)
Gan Q, Allen SJ, Taylor G, Biochem. Eng. J., 12, 223 (2002)
Shim JK, Yoo IK, Lee YM, Process Biochem., 38, 279 (2002)
Yang WB, Cicek N, Ilg J, J. Membr. Sci., 270(1-2), 201 (2006)
Chen RZ, Wang QQ, Du Y, Xing WH, Xu NP, Chem. Eng. J., 145, 371 (2009)
Du Y, Chen RZ, Chem. Biochem. Eng. Q., 21, 251 (2007)
Zhao YJ, Zhang Y, Xing WH, Xu NP, Desalination, 177(1-3), 59 (2005)