化学工业与工程
Home  |   |  About Journal  |  Editorial Board  |  Instruction  |  Subscriptions  |  Download  |  Publication Ethics  |  Contacts Us  |  Chinese
Chemcial Industry and Engineering 2014, Vol. 31 Issue (6) :46-52    DOI: doi: 10.13353/j.issn.1004.9533.2014.06.009
Article Current Issue | Next Issue | Archive | Adv Search << | >>
Measurements and Predication of Infinite Diffusion Coefficients for Z-ligustilide in Supercritical Carbon Dioxide
 WANG  Guo-Qing, LI  Yong-Hui, MO  Xu-Fei, Lyu Hui-Sheng , ZHANG  Min-Hua
R&D Center of Petrochemical Technology, Key Laboratory for Green Chemical Technology of Ministy of Education, Tianjin University, Tianjin 300072, China

Abstract
Reference
Related Articles
Download: PDF (860KB)   HTML ()   Export: BibTeX or EndNote (RIS)      Supporting Info
Abstract The infinite diffusion coefficients of Z-ligustilide in supercritical carbon dioxide were measured by Taylor capillary peak broadening method under 10—18 MPa at 305.15—323.15 K. Experimental results showed that the obtained diffusion coefficients were in the range of 2.75×10-8 m2·s-1 to 5.55×10-8 m2·s-1. It increased with increasing temperature and decreased with increasing pressure and supercritical carbon dioxide density. When the temperature and pressure were constant, the diffusion coefficient increased with increasing content of ethanol in supercritical carbon dioxide. Different modified correlation models including Wilke-Chang, Scheibel, Lusis-Ratcliff, Reddy-Doraiswamy, He-Yu-Su were used to predict the infinite diffusion coefficients of Z-ligustilide. The predicted diffusion coefficients agreed well with the experimental results and the average absolute deviation was 9.352%, 9.356%, 9.354%, 9.360%, 10.444% respectively. The above models could play good performance in the prediction of diffusion coefficients in our work.
Service
Email this article
Add to my bookshelf
Add to citation manager
Email Alert
RSS
Articles by authors
WANG Guo-Qing
LI Yong-Hui
MO Xu-Fei
吕Hui-Sheng
ZHANG Min-Hua
KeywordsZ-ligustilide;   supercritical carbon dioxide;   diffusion coefficients;   Taylor capillary peak broadening method     
Received 2013-02-25;
Corresponding Authors: 李永辉,电话:(022)27406119,E-mail:liyh@tju.edu.cn。     Email: liyh@tju.edu.cn
About author: 王国庆(1986-)男,硕士,从事化工过程及新工艺的研发。
Cite this article:   
WANG Guo-Qing, LI Yong-Hui, MO Xu-Fei, LyuHui-Sheng , ZHANG Min-Hua.Measurements and Predication of Infinite Diffusion Coefficients for Z-ligustilide in Supercritical Carbon Dioxide[J]  Chemcial Industry and Engineering, 2014,V31(6): 46-52
Copyright 2010 by Chemcial Industry and Engineering