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Conversion of Levulinic Acid over Ru/SrZrO3 and Ru/BaZrO3 Supported Basic Catalysts.
- Source :
- ChemCatChem; 1/20/2023, Vol. 15 Issue 2, p1-10, 10p
- Publication Year :
- 2023
-
Abstract
- The catalytic performance of Ru impregnated perovskites‐based catalysts (Ru/SrZrO3 and Ru/BaZrO3) in the conversion of levulinic acid (LA) into higher valuable chemicals was carried out at different reaction temperatures. The Ru/SrZrO3 and Ru/BaZrO3 catalysts, with a loading of 2.0 Ru atoms nm−2, were prepared by incipient impregnation, and characterized by different techniques. The characterization results indicate presence of dispersed Ru catalysts, with a crystalline structure, with absence of carbonate species for Ru/SrZrO3 and larger carbonates as segregated phase and with stronger basic sites for Ru/BaZrO3. At higher reaction temperatures (200 °C – 250 °C), the higher strength of the basic sites of Ru/BaZrO3 had a direct influence on the levulinic acid (LA) conversion reaction. Differences in the apparent activation energy (Eap) values follow the same trend. The catalysts produce a 100 % of selectivity towards GVL. The formation of GVL was proposed to proceed via the intermediacy of 4‐hydroxypentanoic acid due to the presence of basic surface sites. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 18673880
- Volume :
- 15
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- ChemCatChem
- Publication Type :
- Academic Journal
- Accession number :
- 161472604
- Full Text :
- https://doi.org/10.1002/cctc.202201170