OP-II-3

OP-I-18DEVELOPMENT OF SELECTIVE CAMPHENE SYNTHESIS FROMα-PINENE OVER GOLD ON γ-ALUMINA OXIDESimakova I.L. 1 , Solkina Yu.S. 1,2 , Moroz B.L. 1,2 , Simakova O.A. 1,3 ,Reshetnikov S.I. 1 , Simakov A.V. 4 , Murzin D.Yu. 3 , Parmon V.N. 1,21 Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia,simakova@catalysis.ru2 Novosibirsk State University, Novosibirsk, Russia3 Åbo Akademi University, Process Chemistry Center, Turku/Åbo, Finland4 Centro de Nanociencias y Nanotecnologia UNAM, Ensenada, B.C., MexicoThe sustainable production of fine chemicals from biomass and renewablefeedstocks are recently under growing interest. Wood turpentine isolated by thedistillation of resin obtained from trees, mainly pine trees, or collected as a byproductwhen producing chemical wood pulp from pines or other coniferous trees with theKraft process, is inexpensive starting material for synthesis of chemicals. The maincomponents in turpentine oil - α-pinene, β-pinene and 3-carene - are key ingredientsin the flavour and fragrance industry [1]. Earlier it was reported that α-pinene can betransformed over Pd/C catalysts into cis- and trans-pinanes [2,3], linalool andgeraniol [4,5]. Bulk gold is in general regarded poorly active as a heterogeneouscatalyst, but when gold is deposited on a proper metal oxides as ultra-fine particlesits chemistry changes [6]. In the present work we developed the original method ofselective camphene synthesisfrom α-pinene over golddeposited on γ-alumina.The isomerization of α-pinene toα-PineneCamphenecamphene was carried out in a++Pinylcarboniumfixed bed glass reactor overTerpenylcarboniumionionTricyclene2.2 wt. % Au/γ-Al 2 O 3 attemperature 463-483K andatmospheric hydrogen pressureusing n-octane as a solvent.Catalyst 2.2 wt. % Au/γ-Al 2 O 3 wasLimoneneCymeneprepared by impregnation of Figure 1. The scheme of α-pinene isomerizationγ-Al 2 O 3 (S BET =268 m 2 ⋅g –1 , pore volume =0.69 cm 3 ⋅g −1 ) with HAuCl 4 (49.47 wt % Au,Aurat, Russia) aqua solution as described in [7]. Gold catalysts (fresh and spent)were characterized by TEM, XPS, XRF, UV–VIS and TPO.70