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Ionothermal Crystallization of SAPO-11 Using Novel Pyridinium Ionic Liquid and Its Catalytic Activity in Esterification of Levulinic Acid into Ethyl Levulinate.
- Source :
-
Catalysts (2073-4344) . Feb2023, Vol. 13 Issue 2, p433. 17p. - Publication Year :
- 2023
-
Abstract
- A study using a novel pyridinium ionic liquid, namely 1-propylpyridinium bromide ([PPy]Br), to crystallize SAPO-11 under ionothermal conditions is reported. By carefully following the crystallization process, SAPO-11 can readily be crystallized in the presence of [PPy]Br, which serves as a synthesis solvent and structure-directing agent, at 150 °C after 133 h of heating. The study also focuses on manipulating other synthesis parameters (e.g., crystallization temperature, phosphorous content, silicon amount and [PPy]Br concentration) and investigating their respective effects on the formation of SAPO-11. The crystallized SAPO-11 has an acidic nature and a high surface area. Under conductive instant heating conditions, the SAPO-11 catalyst is very active in the conversion of levulinic acid into ethyl levulinate; 93.4% conversion and 100% selectivity of ethyl levulinate are recorded at 180 °C after 30 min of reaction. This result is comparable to or even better than those of conventional homogeneous catalysts. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CATALYTIC activity
*CRYSTALLIZATION
*IONIC liquids
*ESTERIFICATION
*SURFACE area
Subjects
Details
- Language :
- English
- ISSN :
- 20734344
- Volume :
- 13
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Catalysts (2073-4344)
- Publication Type :
- Academic Journal
- Accession number :
- 162086284
- Full Text :
- https://doi.org/10.3390/catal13020433