Journal
JOURNAL OF SUPERCRITICAL FLUIDS
Volume 102, Issue -, Pages 73-79Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.supflu.2015.03.018
Keywords
Xylenes; Supercritical water; Unsaturated fatty acids; Zeolite; Silica/alumina ratio; Catalyst reuse
Categories
Funding
- National Science Foundation [CBET - 1133439]
- Directorate For Engineering [1133439] Funding Source: National Science Foundation
- Div Of Chem, Bioeng, Env, & Transp Sys [1133439] Funding Source: National Science Foundation
Ask authors/readers for more resources
We investigated the reactions of saturated (palmitic and stearic acids) and unsaturated fatty acids (oleic and linoleic acids) in supercritical water at 400 degrees C, 240 bar, over zeolites Y, beta, and ZSM-5. The highest total yield of liquid and gaseous products, 97 +/- 2 wt%, was obtained from palmitic acid by applying ZSM-5 with a silica/alumina ratio of 23. The liquid products had a high concentration of single-ring aromatics, and the total molar yield of aromatics was 102% (42 wt% yield). This catalyst could be regenerated and reused. ZSM-5 with silica/alumina ratio of 23 gave a total product yield of 76 +/- 3 wt% (which includes 40 +/- 5 molar yield of xylenes) at its third use, after undergoing regeneration twice previously. We also report herein the effects of different zeolites, catalyst loadings, degrees of unsaturation in the fatty acids, and silica/alumina ratios of zeolite ZSM-5 on the product yields. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available