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Vol. 31 No. 2 (2019): Vol. 31 No. 2

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Synergic Actions of BEA-Type Zeolites and Ultrasonic Irradiation in Conversion of Geraniol

https://doi.org/10.14233/ajchem.2019.21670
Ts. Ramishvili
Petre Melikishvili Institute of Physical and Organic Chemistry, Ivane Javakhishvili Tbilisi State University, Tbilisi, Georgia
V. Tsitsishvili
Petre Melikishvili Institute of Physical and Organic Chemistry, Ivane Javakhishvili Tbilisi State University, Tbilisi, Georgia
I. Ivanova
Department of Chemistry, Laboratory of Kinetics and Catalysis, Lomonosov Moscow State University, Moscow, Russia
N. Kokiashvili
Department of Chemistry, Faculty of Exact and Natural Sciences, Ivane Javakhishvili Tbilisi State University, Tbilisi, Georgia
T. Bukia
San Diego State University, Georgia, Tbilisi, Georgia
G. Kurtsikidze
Forensic-Criminalistics Department, Ministry of Internal Affairs of Georgia, 0114 Tbilisi, Georgia

Corresponding Author(s) : Ts. Ramishvili

tsiuri.ramishvili@tsu.ge

Asian Journal of Chemistry, Vol. 31 No. 2 (2019): Vol. 31 No. 2

Abstract

The geraniol conversion reaction was initiated by the simultaneous action of micro- and micro-mesoporous BEA-type zeolites and ultrasonic irradiation (UMR-300B hybrid reactor, 25 kHz, 100-900 W; SRF-1, 20-60 kHz, 100 W). Geraniol by ultrasonic irradiation at 27-100 ºC, had a low degree of conversion, upto 2 %. Geraniol was a resistant to ultrasound in argon atmosphere solutions of N,N-dimethylformamide and methanol. In methanolic solution, geraniol was actively converted to linalool and to methyl ethers of linalool and nerol with the selectivity of 80 % on zeolite BEA-25 under ultrasonic irradiation in air at 30 ºC. Using BEA-type zeolite/ultrasonic-assisted reaction was increased the degree of conversion of geraniol, the selectivity and yield to linalool and nerol on the most active RBEA-25 zeolite by prolonged ultrasonic irradiation (1.5-5 h) or under combined ultrasound and microwave irradiation (US 300 W/MW 550 W, 1.5 h, 80 ºC).

Keywords

Geraniol BEA-type zeolite Ultrasonic activation Sinergic effect Isomerization
Ramishvili, T., Tsitsishvili, V., Ivanova, I., Kokiashvili, N., Bukia, T., & Kurtsikidze, G. (2018). Synergic Actions of BEA-Type Zeolites and Ultrasonic Irradiation in Conversion of Geraniol. Asian Journal of Chemistry, 31(2), 438–444. https://doi.org/10.14233/ajchem.2019.21670
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