SITRONELAL CYCLE-HYDROGENATION TANDEM CREATED ZrO MONTMORILLONIT WITH VARIATION METHOD REACTION
| Main Authors: | Fatimah, Is, Yudha, Septian Perwira, Rubiyanto, Dwiarso, Huda, Thorikul |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Institute of Research and Community Services, Universitas Negeri Yogyakarta
, 2014
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| Subjects: | |
| Online Access: |
https://journal.uny.ac.id/index.php/saintek/article/view/2135 https://journal.uny.ac.id/index.php/saintek/article/view/2135/1775 |
Daftar Isi:
- Tandem cyclization reaction towards menthol-citronellal hydrogenation reactions through one-step reaction with a variety of methods using pillared montmorillonite catalyst ZrO2 (Zr-MMT) have been done. The research aimed to determine the effectiveness of Zr-MMT catalyst in the reaction process with two different methods; first method comprises reacting flow system to citronellal - catalyst mixture after reflux with pressure and flow H2 of 3 kPa, and the other method consists of a flow system to the citronellal -catalyst mixture at the temperature of 200o C with H2 flow pressure of 2 kPa. Reaction products were analyzed using GC-MS to determine the total conversion and product yield of menthol. The results showed that the different methods give different reaction mechanisms significantly. The first method gives almost to 99% conversion of citronellal with major products of isomenthone and isopulegol while the second method give the conversion of 5.18% with 0.39% selectivity to menthol products. Compared with natural montmorillonite, both processes showed higher conversion in which the conversion of citronellal over montmorillonite give the concersion less than 5%. The adequacy of H2 flow rate as a reactant is an important factor affection the mechanism is discussed in this paper.