权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of Metal Cluster Catalysts Supported on Porous Chelate Resins

多孔螯合树脂负载金属簇催化剂的研制

基本信息

批准号：
01550611
负责人：
TOSHIMA Naoki
金额：
$ 1.47万
依托单位：
The Univeristy of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

项目摘要

1. Immobilization of Metal Clusters on Chelate ResinImmobilization of hexachloroplatinate ions on the aluminum complex of the chelate resin, crosslinked polystyrene containing iminodiacetic acid moieties, and then successive reduction of the platinum (IV) ions by lithium borotydride gave the resin-supported platinum cluster catalyst. Sodium (I) and magnesium (II) derevatives were obtained by ion exchange with aluminum (III). The chelate resin complex-supported palladium cluster catalysts were prerared by immobilization of palladium (II) ions with lithium borohydride.2. Characterization of Chelate Resin Complex-Supported Metal ClusrersThe surface area of the chelate resin complex as well as the metal cluster-containing chelate resin complex increases with the valency of the metal ion involved. Most of the porse of the Al (III) complex of the chelate resin are 40 A in diameter, while the platinum cluster has the average diameter of 26 A, which suggests the cluster particles occupy the pores. The metal ion involved in the resin can affect the distribution of clusters, too.3. Catalyses of Chelate Resin Complex-Supported Metal ClustersThe platinum and palladium clusters thus obtained are active as the catalysts for hydrogenation of olefin and diene under mild conditions. The catalytic activity increases with increase of the surface area of the resin. The hydrogenation rate also depends both on the substrate-support interaction and on the distribution of the clusters in the support.

1.螯合树脂上金属簇的固定化将六氯铂酸根离子固定在螯合树脂的铝络合物上，交联聚苯乙烯含有亚氨基二乙酸部分，然后用硼氢化锂还原铂离子，得到树脂负载的铂簇催化剂。通过与铝（III）的离子交换获得钠（I）和镁（II）还原剂。采用硼氢化锂固载钯离子的方法制备了螯合树脂络合物负载钯簇催化剂.螯合树脂络合物负载的金属络合物的表征螯合树脂络合物以及含金属簇的螯合树脂络合物的表面积随着所涉及的金属离子的化合价而增加。螯合树脂的Al（III）络合物的大部分颗粒的直径为40 A，而铂簇的平均直径为26 A，这表明簇颗粒占据了孔。树脂中的金属离子也会影响团簇的分布.螯合树脂络合物负载金属簇合物催化剂在温和条件下，所得铂、钯簇合物对烯烃和二烯烃的加氢反应具有催化活性。催化活性随树脂比表面积的增加而提高。氢化速率还取决于基质-载体相互作用和载体中簇的分布。