Modified desilicated natural zeolite catalyst for knoevenagel reaction

Ainatul Mardiah Mat Rapi, Zainab Ramli

Abstract


Natural zeolite (NaZ) has wide range of usage in agriculture and waste water treatment.  However, its application as catalyst has not been widely studied. In this research, natural zeolite was modified its property and applied as base catalyst in the Knoevenagel reaction. The modification was done by desilication in alkaline solution at different temperature followed by ion exchanged with calcium and barium ions of alkaline earth metal. The natural zeolite obtained characterized with XRD showed that desilication results in lowering crystallinity of zeolite crystal while FT-IR showed Si/Al ration of the zeolite framework decrease showing the increase of Al in the framework. The catalyst produced was then tested in Knoevenagel reaction and analyzed by gas chromatography (GC) which showed that barium exchanged desilicated NaZ is more active and highly selective than calcium exchanged NaZ due to its higher basicity.


Full Text:

PDF

References


L.S.Gadekar, Katakar, S. S., & K.N.Vidahate. (2008). Modification, characterization and catalytic potency of modified natural zeolite Knoevenagel reaction. Buletin of Catalysis Society of India, 76-83.

Bekkum, H. V., Flanigen, & Jansen, J. C. (1991). Introduction to Zeolite Science And Practice 58: Elsevier Science Amsterdam.

Linares, C. F., Goldwasser, M. R., Machado, F. J., Rivera, A., Rodriguez-Fuantes, G., & Barrault, J. (2000). Advantages of base exchanged Natural Clinoptilolite as Catalyst for Knoevenagel Reaction. Microporous and Mesoporous Materials, 41, 69-77

Bonilla, A., Baudouin, D., & Pérez-Ramírez, J. (2009). Desilication of ferrierite zeolite for porosity generation and improved effectiveness in polyethylene pyrolysis. Journal of Catalysis, 170-180


Refbacks

  • There are currently no refbacks.


Copyright (c) 2016 eProceedings Chemistry

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Copyright © 2016 Department of Chemistry, Universiti Teknologi Malaysia.

Disclaimer : This website has been updated to the best of our knowledge to be accurate. However, Universiti Teknologi Malaysia shall not be liable for any loss or damage caused by the usage of any information obtained from this web site.
Best viewed: Mozilla Firefox 4.0 & Google Chrome at 1024 × 768 resolution.