A1 Journal article (refereed)
Novel Functionality of Lithium-Impregnated Titania as Nanocatalyst (2019)

Ambat, I., Srivastava, V., Haapaniemi, E., & Sillanpää, M. (2019). Novel Functionality of Lithium-Impregnated Titania as Nanocatalyst. Catalysts, 9(11), Article 943. https://doi.org/10.3390/catal9110943

JYU authors or editors

Publication details

All authors or editorsAmbat, Indu; Srivastava, Varsha; Haapaniemi, Esa; Sillanpää, Mika

Journal or seriesCatalysts


Publication year2019


Issue number11

Article number943

PublisherMDPI AG

Publication countrySwitzerland

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessOpen Access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/66444


The present work incorporates the synthesis of a multifunctional catalyst for the transesterification of waste cooking oil (WCO) to biodiesel and recovery of rare earth elements (REEs). For this purpose, TiO2 nanoparticles and TiO2 doped with lithium ions were prepared. The influence of lithium ions on the catalytic performance of TiO2 was attained by impregnation of the different molar ratios of lithium hydroxide to bare TiO2. Then each catalyst was screened for catalytic conversion of WCO to fatty acid methyl ester (FAME) and also for REEs recovery. All synthesized materials were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET) analysis, and Hammett indicator for the basicity test. The obtained biodiesel was characterized by gas chromatography with mass spectrometry (GC-MS), 1H, and 13C nuclear magnetic resonance (NMR). Moreover, the physical parameters of the synthesized biodiesel were also determined. The REEs recovery efficiency of synthesized nanomaterials was investigated, and the percentage of REEs removal was determined by inductively-coupled plasma optical emission spectroscopy (ICP-OES).

Keywordscatalystsnanoparticlestitanium dioxidelithiumbiodieselvegetable oilsrare earth metals

Free keywordsbiodiesel; rare earth elements; TiO2; nanocatalyst; waste cooking oil

Contributing organizations

Ministry reportingYes

Reporting Year2019

JUFO rating1

Last updated on 2024-11-05 at 18:26