会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 35. 发明授权
    • Palladium-containing catalyst
    • 含钯催化剂
    • US4176085A
    • 1979-11-27
    • US585227
    • 1975-06-09
    • Jin S. YooRonald L. Milam
    • Jin S. YooRonald L. Milam
    • B01J31/24C07C2/04B01J31/22
    • B01J31/1616B01J31/122B01J31/143B01J31/2291B01J31/24C07C2/04C08F10/00C08F210/02B01J2231/12B01J2531/824C07C2521/12C07C2531/14C07C2531/22C07C2531/24
    • Solid .pi.-allyl complex catalysts comprising:(A) A palladium source;(B) A monotertiary phosphine electron donor ligand;(C) A combination of a reducing agent capable of reducing the palladium source to an oxidation state of less than 2 and a Lewis acid capable of forming a coordination bond with palladium; and(D) An acidic, solid, silica-based support material, are useful in the codimerization of a conjugated diene and a monoene. Preferably, the catalyst is activated by the additional presence of a conjugated diene. In a preferred embodiment, the solid .pi.-allyl palladium complex catalyst prepared from palladium acetylacetonate, triphenylphosphine, diethylaluminum chloride and a calcined silica-alumina support having a separate, distinct alumina phase is useful in the selective codimerization of 1,3-butadiene and ethylene to form trans-1,4-hexadiene.
    • 包括:(A)钯源; (B)单子膦电子供体配体; (C)能够将钯源还原成氧化态小于2的还原剂和能够与钯形成配位键的路易斯酸的组合; 和(D)酸性固体二氧化硅基载体材料可用于共轭二烯和单烯的共聚。 优选地,通过额外存在共轭二烯活化催化剂。 在优选的实施方案中,由乙酰丙酮钯,三苯基膦,二乙基氯化铝和具有单独的不同氧化铝相的煅烧二氧化硅 - 氧化铝载体制备的固体pi烯丙基钯配合物催化剂可用于1,3-丁二烯和乙烯的选择性同工化 以形成反式-1,4-己二烯。