Synthesis of Aluminium Doped Na-Titanate Nanorods and Its Application as Potential CO.sub.2 Hydrogenation Catalysts

• Published in: Catalysis letters pp. 3361 - 3369
• Main Authors: Guzmán-Cruz, M. A, Ramesh-Kumar, Ch, Acosta-Alejandro, M, Frías-Márquez, D. M, Domiguez, D, Zepeda, T. A, Fuentes-Moyado, S
• Format: Journal Article
• Language: English
• Published: Springer 01.12.2019
• Subjects: Catalysts; Hydrogenation
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1007/s10562-019-02902-8

A series of Al-doped Na-TiO.sub.2 nanorods (AlTi-nR-x) varying the Al.sub.2O.sub.3/TiO.sub.2 (Al/Ti) ratio was synthesized by hydrothermal method. TEM results revealed well-defined nanorod like shape morphology. XPS results confirmed the presence of Al inside the samples and a slight increase in electron density around the Ti atom. Calcined materials were evaluated in the CO.sub.2 hydrogenation (HYD) in a continuous flow-microreactor at 280-340 °C under atmospheric pressure. Results from this work exposed that all AlTi-nR-x materials have great potential to be used as CO.sub.2 HYD catalysts. However, the best catalytic performance was obtained with the AlTi-nR-0.5 catalysts, which also displayed high selectivity (82%) towards methanol.