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Highly Active Nickel (II) Oxide-Supported Cerium Oxide Catalysts for Valorization of Glycerol into Oxygenated Fuel Additives.
- Source :
-
Materials (Basel, Switzerland) [Materials (Basel)] 2023 Jun 29; Vol. 16 (13). Date of Electronic Publication: 2023 Jun 29. - Publication Year :
- 2023
-
Abstract
- Acetylation of glycerol to yield monoacetin (MAT), diacetin (DAT), and triacetin (TAT) over NiO-supported CeO <subscript>2</subscript> ( x NiO/CeO <subscript>2</subscript> ) catalysts is reported. The catalysts were synthesized utilizing a sol-gel technique, whereby different quantities of NiO ( x = 9, 27, and 45 wt%) were supported onto the CeO <subscript>2</subscript> substrate, and hexadecyltrimethylammonium bromide (CTABr) served as a porogen. The utilization of EDX elemental mapping analysis confirmed the existence of evenly distributed Ni <superscript>2+</superscript> ion and octahedral NiO nanoparticles on the CeO <subscript>2</subscript> surface through the DRS UV-Vis spectroscopy. The most active catalyst is 27NiO/CeO <subscript>2</subscript> based on TAT selectivity in the glycerol acetylation with ethanoic acid, attaining 97.6% glycerol conversion with 70.5% selectivity to TAT at 170 °C with a 1:10 glycerol/ethanoic acid molar ratio for 30 min using a non-microwave instant heating reactor. The 27NiO/CeO <subscript>2</subscript> is reusable without significant decline in catalytic performance after ten consecutive reaction cycles, indicating high structure stability with accessible active acidity.
Details
- Language :
- English
- ISSN :
- 1996-1944
- Volume :
- 16
- Issue :
- 13
- Database :
- MEDLINE
- Journal :
- Materials (Basel, Switzerland)
- Publication Type :
- Academic Journal
- Accession number :
- 37445026
- Full Text :
- https://doi.org/10.3390/ma16134713