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 editors: Ambat, Indu; Srivastava, Varsha; Haapaniemi, Esa; Sillanpää, Mika

Journal or series: Catalysts

eISSN: 2073-4344

Publication year: 2019

Volume: 9

Issue number: 11

Article number: 943

Publisher: MDPI AG

Publication country: Switzerland

Publication language: English

DOI: https://doi.org/10.3390/catal9110943

Publication open access: Openly available

Publication channel open access: Open Access channel

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

Abstract

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).

Keywords: catalysts; nanoparticles; titanium dioxide; lithium; biodiesel; vegetable oils; rare earth metals

Free keywords: biodiesel; rare earth elements; TiO2; nanocatalyst; waste cooking oil

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 1