Effect of Butadiene in Catalytic Trimerization ofIsobutene Using Commercial C4 Feeds

Bulletin of the Korean chemical society

Hee-Du Lee¹  Ji Woong Yoon¹  Tae-Jin Kim¹  Sung Hwa Jhung¹  Ji Sun Lee¹  Jong-San Chang¹ 

关键词: Isobutene;    Trimerization;    Oligomerization;    Butadiene;    Cation-exchange resin;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Catalytic oligomerization of isobutene to produce triisobutenes has been performed over a cation-exchange resin (Amberlyst-35) by using commercial C4 feeds. The catalytic activity in the oligomerization was retained without deactivation up to 90 h of reaction in a simulated reaction feed without butadiene, but its activity was significantly affected by the presence of butadiene in commercial C4 feeds. The isobutene conversion with time-on-stream was significantly decreased in the presence of butadiene, indicating the catalyst deactivation by butadiene. However, the stable activity for trimerization was accomplished when the oligomerization was carried out after eliminating butadiene by hydrogenation of the feeds. This work demonstrates that butadiene plays a role as a catalyst poison on the solid acid catalyst, so that its removal in the reactant feed is essential for practical application of trimerization.

【 授权许可】

Unknown