Introduction of a Simple Experiment for the Undergraduate Organic Chemistry Laboratory Demonstrating the Lewis Acid and Shape-Selective Properties of Zeolite Na-Y
| Autor: | Zach Szczepanski, Vincent M. Maloney, Keith Smith |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Green chemistry
010405 organic chemistry Chemistry 05 social sciences Inorganic chemistry 050301 education Halogenation General Chemistry Electrophilic aromatic substitution 01 natural sciences Toluene 0104 chemical sciences Education Electrophilic substitution chemistry.chemical_compound Electrophile Organic chemistry QD Lewis acids and bases Zeolite 0503 education |
| Zdroj: | Journal of Chemical Education. 94:1343-1346 |
| ISSN: | 1938-1328 0021-9584 |
| DOI: | 10.1021/acs.jchemed.6b00662 |
| Popis: | A simple, inexpensive, discovery-based experiment for undergraduate organic laboratories has been developed that demonstrates the Lewis acid and shape-selective properties of zeolites. Calcined zeolite Na-Y promotes the electrophilic aromatic bromination of toluene with a significantly higher para/ortho ratio than observed under conventional conditions. The experiment can be completed in one three-hour laboratory period. The zeolite can be recovered and regenerated for later reuse. A broad range of organic course topics from orientation in electrophilic aromatic substitution to photochemistry can be discussed. |
| Databáze: | OpenAIRE |
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