Addition of olefins to acetylacetone catalyzed by cooperation of Brønsted acid site of zeolite and gold cluster

作者: Ken-ichi Shimizu , Takumi Yamamoto , Yutaka Tai , Kazu Okumura , Atsushi Satsuma

DOI: 10.1016/J.APCATA.2011.04.029

关键词: CatalysisAlkeneAcetylacetoneAddition reactionGold clusterOxidation stateChemistryInorganic chemistryBrønsted–Lowry acid–base theoryZeolitePolymer chemistry

摘要: Abstract HY zeolite-supported Au clusters (Au 0 HY) prepared by deposition–precipitation method, well characterized XANES, EXAFS, and NH 3 - acetyl acetone-adsorption IR, were tested for addition of acetone to alkenes. showed higher selectivity the product than Au(OH) supported on 4 + -exchanged Y zeolite, Al 2 O , MgO, SiO TiO . Studies effect oxidation state, cluster size Bronsted acidity zeolite catalytic that co-presence metallic with smaller acidic OH groups was necessary selective formation product. Cooperation mechanism acid sites is proposed.

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