Please use this identifier to cite or link to this item: http://hdl.handle.net/10497/17586
Title: Effect of extra-framework cations of LTL nanozeolites to inhibit oil oxidation
Authors: Tan, Kok-Hou
Cham, Hooi-Ying
Hussein Awala
Ling, Tau Chuan
Rino R Mukti
Wong, Ka Lun
Mintova, Svetlana
Ng, Eng Poh
Keywords: Palm oil oxidation
Nanosized LTL zeolite
Extra-framework cations
Antioxidant
Issue Date: 2015
Citation: Tan, K. H., Cham, H. Y., Awala, H., Ling, T. C., Mukti, R. R., Wong, K. L., ... & Ng, E. P. (2015). Effect of extra-framework cations of LTL nanozeolites to inhibit oil oxidation. Nanoscale research letters, 10(1), 253. http://dx.doi.org/10.1186/s11671-015-0956-6
Abstract: Lubricant oils take significant part in current health and environmental considerations since they are an integral and indispensable component of modern technology. Antioxidants are probably the most important additives used in oils because oxidative deterioration plays a major role in oil degradation. Zeolite nanoparticles (NPs) have been proven as another option as green antioxidants in oil formulation. The anti-oxidative behavior of zeolite NPs is obvious; however, the phenomenon is still under investigation. Herein, a study of the effect of extra-framework cations stabilized on Linde Type L (LTL) zeolite NPs (ca. 20 nm) on inhibition of oxidation in palm oil-based lubricant oil is reported. Hydrophilic LTL zeolites with a Si/Al ratio of 3.2 containing four different inorganic cations (Li+, Na+, K+, Ca2+) were applied. The oxidation of the lubricant oil was followed by visual observation, colorimetry, fourier transform infrared (FTIR) spectroscopy, 1H NMR spectroscopy, total acid number (TAN), and rheology analyses. The effect of extra-framework cations to slow down the rate of oil oxidation and to control the viscosity of oil is demonstrated. The degradation rate of the lubricant oil samples is decreased considerably as the polarizability of cation is increased with the presence of zeolite NPs. More importantly, the microporous zeolite NPs have a great influence in halting the steps that lead to the polymerization of the oils and thus increasing the lifetime of oils.
URI: http://hdl.handle.net/10497/17586
ISSN: 1931-7573
Other Identifiers: 10.1186/s11671-015-0956-6
Website: http://dx.doi.org/10.1186/s11671-015-0956-6
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