Journal
APPLIED SURFACE SCIENCE
Volume 256, Issue 12, Pages 3997-4002Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2010.01.065
Keywords
Zeolite Na-Y; Cation exchange; Ethylene adsorption
Categories
Funding
- Postgraduate Education and Research Program in Chemistry: Center of Excellence for Innovation in Chemistry (PERCH-CIC)
Ask authors/readers for more resources
+ The adsorption of ethylene by zeolite NaY and zeolite NaY modified by cation exchange with potassium, rubidium, and cesium ions was studied. Cation exchanges were carried out using KNO3, RbNO3, and CsNO3 in the concentration ranges of 0.2-10 mM. XRD patterns and specific surface areas illustrated that modification of NaY zeolite by very dilute solutions containing K+, Rb+ and Cs+ did not lead to significant changes in the crystallinity. Analysis of metals content (ICP-OES) showed that Cs+ can replace Na+ better than Rb+ and K+. Particle analysis indicated slight decreases in surface area but pore volumes and pore diameters remained unchanged. Ethylene adsorption isotherms indicated that Na-Y zeolite which was modified by 5.0 mM KNO3, 0.5 mM RbNO3 and 1.0 mM CsNO3 could adsorb ethylene better than zeolite Na-Y. K-NaY zeolite adsorbed up to 102.45 cm(3)/g ethylene, while Rb-NaY and Cs-NaY zeolites adsorbed up to 98.50 cm(3)/g and 90.15 cm(3)/g ethylene, respectively. Ethylene adsorption capacities depended on number of adsorption sites and surface interactions. (C) 2010 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