title: Utilisation of on-line acoustic irradiation as a means to counter-effect catalyst deactivation in heterogeneous catalysis.
abstract: The effect of power ultrasound has been studied in the hydrogenation of 1-phenyl-1,2-propanedione (enantioselective hydrogenation) and linoleic acid (fat hardening). Furthermore the hydrogenation of d-xylose to xylitol and citral to citronellal and citronellol were studied under the influence of acoustic irradiation. We have investigated the effect of on-line acoustic irradiation of these heterogeneously catalysed liquid-gas-solid systems in which it was found to counter-effect catalyst deactivation, increase the reaction velocity and to enhance the selectivity of various heterogeneously catalysed reactions.
authors.affiliation: Laboratory of Industrial Chemistry, Process Chemistry Group, Abo Akademi University, FIN-20500, Turku/Abo, Finland. jpmikkol@abo.fi
authors.forename: J-P
authors.initials: JP
authors.lastname: Mikkola
authors.forename: B
authors.initials: B
authors.lastname: Toukoniitty
authors.forename: E
authors.initials: E
authors.lastname: Toukoniitty
authors.forename: J
authors.initials: J
authors.lastname: Aumo
authors.forename: T
authors.initials: T
authors.lastname: Salmi
mesh_terms: D000162:Acoustics; D000080462:Acyclic Monoterpenes; D001565:Benzoates / Q000737:chemistry*; D002384:Catalysis; D047188:Chalcones; D006865:Hydrogenation; D007700:Kinetics; D019787:Linoleic Acid / Q000737:chemistry*; D039821:Monoterpenes / Q000737:chemistry; D011827:Radiation; D013237:Stereoisomerism; D013696:Temperature; D014465:Ultrasonics; D014994:Xylose / Q000737:chemistry
chemical_list: D000080462:Acyclic Monoterpenes; D001565:Benzoates; D047188:Chalcones; D039821:Monoterpenes; D019787:Linoleic Acid; D014994:Xylose; C007076:citral; C100349:1-phenyl-1,2-propanedione