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近二十年来,Ziegler型催化剂用于选择性加氢方面的研究已有不少报道,有的催化剂在常温、常压下能获得高的转化率和选择性,曾报道了用Co(acac)_3-Et_3Al-吡啶在常温、常压下对环戊二烯(CPD)加氢,其转化率和选择性都接近100％ 但催化剂的组成及加氢过程未见详细说明. 在这种催化体系中,Co(acac)_3是催化剂母体,Et_3Al是还原剂,将Co(acac)_3还原成零价或低价钴,吡啶则是配位体.该体系的特点是在常温、常压下对二烯烃或多烯烃选
Nearly two decades, Ziegler-type catalysts for selective hydrogenation has been reported in many studies, and some catalysts at room temperature and atmospheric pressure to obtain high conversion and selectivity, has been reported using Co (acac) _3-Et_3Al-pyridine hydrogenation of cyclopentadiene (CPD) at room temperature, atmospheric pressure, the conversion and selectivity are close to 100% but the catalyst composition and hydrogenation process is not described in detail in this catalytic system , Co (acac) _3 is the catalyst precursor, Et_3Al is a reducing agent, the reduction of Co (acac) _3 to zero or cheap cobalt, pyridine is a ligand. The system is characterized by the normal temperature and pressure Diolefin or multi-olefins