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- Title
Microwave-assisted green synthesis of nitrobenzene using sulfated natural zeolite as a potential solid acid catalyst.
- Authors
Saviola, Aldino Javier; Wijaya, Karna; Saputri, Wahyu Dita; Hauli, Latifah; Amin, Amalia Kurnia; Ismail, Hilda; Budhijanto, Budhijanto; Oh, Won-Chun; Wangsa, Wangsa; Prastyo, Prastyo
- Abstract
Natural zeolite and sulfated natural zeolite catalyst materials have been successfully prepared, characterized, and applied as a replacement for the role of a sulfuric acid catalyst in the synthesis of nitrobenzene. Natural zeolites were prepared into uniform-sized powders and then refluxed with H2SO4 with varying concentrations of 0, 1, 2, 3, and 4 M, proceeded by calcination with N2 gas flow (labeled as NZ, SNZ-1, SNZ-2, SNZ-3, and SNZ-4). Nitrobenzene was synthesized in a batch microwave reactor using natural zeolite and sulfated natural zeolite catalysts with the best acidity value. The results showed that the sulfuric acid treatment of natural zeolite caused changes in its physical and chemical characteristics. The NZ catalyst has an acidity value of 1.742 mmol g−1, and the 2 M concentration variation resulted in the sulfated natural zeolite with the best acidity value of 1.625 mmol g−1. The optimal amount of catalyst required is 1.0 g. Both catalysts are selective toward the nitration reaction of benzene. The average benzene conversion produced for each catalyst was 41.53 ± 3.61% and 58.92 ± 1.37%. Furthermore, the SNZ-2 catalyst has better reusability for three reaction runs.
- Subjects
NEW Zealand; ACID catalysts; ZEOLITE catalysts; NITROBENZENE; GAS flow; CATALYST synthesis; BATCH reactors; ZEOLITES
- Publication
Applied Nanoscience, 2023, Vol 13, Issue 9, p6575
- ISSN
2190-5509
- Publication type
Article
- DOI
10.1007/s13204-023-02941-z