Ring Opening of Decalin Over Zeolite-Supported Iridium Catalysts |
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Authors: | David Kubička Matias Kangas Narendra Kumar Marja Tiitta Marina Lindblad Dmitry Yu Murzin |
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Affiliation: | 1. Department of the Refinery and Petrochemical Research, VúANCH, a.s., D.S. 458, Zálu?í 1, 43670, Litvinov, Czech Republic 2. Laboratory of Industrial Chemistry, Process Chemistry Centre, Abo Akademi University, Biskopsgatan 8, 20500, Abo, Turku, Finland 3. Neste Oil Oy, P.O. Box 310, 06101, Porvoo, Finland
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Abstract: | Selective ring opening of decalin was investigated over various metal-modified zeolites in order to shed light on the key parameters affecting the selectivity to ring-opening products at low extent of cracking reactions. Ir-modified zeolites H-Y and H-Beta having different concentration and strength of acid sites were studied in a batch reactor at 250–310 °C and 20–60 bar H2 and their performance was compared with that of Pt-modified zeolites. The concentration of Brønsted acid sites, reaction temperature and hydrogen pressure were shown to be the crucial reaction parameters. To obtain high selectivity to formation of ring-opening products from decalin, mildly acidic Ir-modified Beta was the best choice when the reaction was carried out at temperature of 270 °C or lower and at H2 pressure of 60 bar. Under these conditions the selectivity and yield of ring-opening products exceeded 65 and 60%, respectively. |
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