摘要
(日)《化学工业时报》2001介绍:日本化学技术研究所研制出选择性极高的由合成气(一氧化碳+氢)制取乙烯和丙烯等烃类的超细铁系催化剂。该催化剂是使用能够产生超高温等离子的装置合成的。原料为甲烷、硅烷和五羰基铁,粒径为0.05～0.005微米。催化剂结构虽尚未完全确定,但经X射线分析,已确知在无定形的铁、硅和碳的混合物中混有β型二硅化铁。
It is believed that it is difficult to synthesize cyclopentadienyl light RE chloride fromtri-cyclopentadienide compounds of RE because of disproportionation reaction which is re-lated to lanthanide contraction and coordination unsaturation. In this work, the dinuclearorganic compounds of RE-lithium were synthesized using THF solution of LnCl_3 .nLiCl.Thedisproportionation reaction is considered to be avoided by the stable effect of chloro-bridgelink. Mono-cyclopentadienyl light RE chlorides were synthesized from tri-cyclopentadienidecompounds of RE successfully.
出处
《应用化学》
CAS
CSCD
北大核心
1989年第4期62-64,共3页
Chinese Journal of Applied Chemistry
关键词
稀土
有机配合物
歧化反应
Mono-cyclopentadienyl
light RE chlorides
Tri--cyclopentadienide
Disproportionation reaction
