Abstract—The aim of the work is to obtain citronellal that is the odoriferous substance and refers to the fragrant compounds used in perfumery and in the food industry as a flavoring. It is a raw material for producing aromatic substances - izopulegol, menthol, citronellol et al. The hydrogenation of citral to citronellal was investigated over the catalysts on the base of VIII group metals using special high-pressure kinetic (KEHP) equipment allowing to keep the liquid phase hydrogenation process for any constant hydrogen pressure in a wide variation of the experimental conditions. On the activity of the catalysts studied are located in the following sequence: NiR > Pt > Pd > Rh > Ni-black > Ir > Os > Ru. The effect of different key parameters of the process (nature of the solvent, reduction temperature of catalyst, hydrogen pressure, etc.) on the kinetics and selectivity of the hydrogenation of citral to citronellal over the supported nickel catalysts were studied.
Index Terms—Nickel-containing catalyst, citral, citronellal, hydrogen.
U. Syunbayev and Yergaziyeva G. are with Institute of Combustion Problems MES RK Almaty, Kazakhstan (e-mail: Syunbaev51@mail.ru, ergazieva_g@mail.ru).
Churina D. and Assanov N. A. are with Center of Physical-chemical Methods of Investigations and Analysis of al-Farabi Kazakh National University, Almaty, Kazakhstan (email: dina.churina@gmail.com, Naukhan.Asanov@kaznu.kz).
K. Kalihanov is with Institute of Combustion Problems MES RK, Almaty, Kazakhstan (email: kunya-kz@mail.ru).
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Cite: U. Syunbayev, D. Kh. Churina, G. Y. Yergaziyeva, N. A. Assanov, and K. K. Kalihanov, "The Liquid-Phase Hydrogenation of Citral to Citronellal at Hydrogen Pressure," International Journal of Chemical Engineering and Applications vol. 7, no. 2, pp. 133-137, 2016.
