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Industrially relevant ethylene trimerization catalysts and processes
Applied Petrochemical Research Pub Date : 2021-09-12 , DOI: 10.1007/s13203-021-00279-7
Subhas Madavu Salian 1 , Mahuya Bagui 1 , Raksh Vir Jasra 1
Affiliation  

1-Hexene is one of the comonomers used to produce mainly low linear density polyethylene (LLDPE) and high-density polyethylene (HDPE). The production of 1-hexene by ethylene trimerization method gained much interest in petrochemical industry due to its high selectivity towards 1-hexene in comparison to traditional ethylene oligomerization method. In literature, many catalyst systems are reported for ethylene trimerization reaction, but only few of them qualify for the commercial applications. In the present review, activity and selectivity of commercially viable catalyst systems and amount of polyethylene formed as a by-product on using these catalyst systems were discussed. Special attention is given to Chevron Phillips ethylene trimerization technology which is one of the dominant technologies in the production of 1-hexene. The challenges such as fouling issues at commercial plant due to polyethylene by-product formation were discussed and the progress made to overcome the challenges were also discussed. New generation nontoxic titanium catalysts look promising and challenges involved in commercializing these catalysts were presented in the review.

Graphic abstract



中文翻译:

工业相关的乙烯三聚催化剂和工艺

1-己烯是主要用于生产低线密度聚乙烯 (LLDPE) 和高密度聚乙烯 (HDPE) 的共聚单体之一。与传统的乙烯齐聚法相比,乙烯三聚法生产 1-己烯对 1-己烯的选择性高,因此在石油化工行业受到广泛关注。文献中报道了许多用于乙烯三聚反应的催化剂体系,但只有少数符合商业应用的条件。在本综述中,讨论了商业上可行的催化剂体系的活性和选择性以及使用这些催化剂体系时作为副产物形成的聚乙烯的量。特别关注 Chevron Phillips 乙烯三聚技术,它是 1-己烯生产中的主导技术之一。讨论了诸如聚乙烯副产品形成导致的商业工厂结垢问题等挑战,并讨论了克服这些挑战所取得的进展。新一代无毒钛催化剂看起来很有前景,评论中提出了将这些催化剂商业化所涉及的挑战。

图形摘要

更新日期:2021-09-12
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