Isotopic labelling in ethylene oligomerization: addressing the issue of 1-octene <i>vs.</i> 1-hexene selectivity
作者:Nathanael A. Hirscher、Jay A. Labinger、Theodor Agapie
DOI:10.1039/c8dt04509g
日期:——
intermediate rather than the C–C coupling of chromacyclopentanes or Cr speciation into independent trimerization and tetramerization catalysts is consistent with the data, including observed upper limits on 1-octene selectivity.
Mechanism of the Isomerization of 1-Alkene during Iron-Catalyzed Fischer–Tropsch Synthesis
作者:Buchang Shi、Robert J O'Brien、Shiqi Bao、Burtron H Davis
DOI:10.1006/jcat.2001.3175
日期:2001.4
reduced to deuterated octane, and isomerized to deuterated trans-2-octene and cis-2-octene with approximately equal amounts of the two isomers. No other internal deuterated octene and C7 products were obtained. The deuterium/hydrogen exchange reaction occurred in deuterated 1-octene as well as in the products formed from it. The maximum number of deuteriumatoms that can be replaced by hydrogen is 5. There
氘/氢交换反应在铁催化的费-托反应条件下进行,使用氘代辛烷,壬烷,癸烷,十三烷和十五烷的混合物作为探针。结果表明,在这些条件下,烷烃中不会发生氘/氢交换。在相同反应条件下,以1-辛烯-d 16为探针研究1-烯烃的异构化。将1-辛烯-d 16还原为氘代辛烷,然后异构化为氘代反式-2-辛烯和顺式-2-辛烯,其中两种异构体的含量大致相等。没有其他内部氘代辛烯和C 7获得产品。氘/氢交换反应发生在氘代1-辛烯以及由其形成的产物中。可以被氢取代的氘原子的最大数目为5。没有2-辛烯的C 8 D 16异位异构体。考虑到这些实验事实,提出了一种在铁催化的费-托反应条件下1-烯烃异构化的机理。