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8698057 
Journal Article 
Green sutaibable chemistry with supercritical carbon dioxide solvent 
Shirai, M 
2004 
11 
29 
English 
Green suitability of organic reactions with solid catalysts under supercritical carbon dioxide, is discussed. The reasons for green sustainability of these reactions include increased solubility of reactant gases in supercritical fluid, thereby eliminating mass transfer resistance. The reasons also include easy separation of catalysts and products. A charcoal-supported rhodium catalyst was highly active for the ring hydrogenation of phenol to KA oil at 328 K under supercritical carbon dioxide, while gas reaction at less than 453 K palladium is suitable for this reaction.