Carbon molecular sieve membrane from a microporous spirobisindane-based polyimide precursor with enhanced ethylene/ethane mixed-gas selectivity

Octavio Salinas, Xiaohua Ma, Yingge Wang, Yu Han, Ingo Pinnau

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Ethylene is typically produced by steam cracking of various hydrocarbon feedstocks. The gaseous products are then separated in a demethanizer followed by a deethanizer unit and finally sent to a C splitter for the final purification step. Cryogenic distillation of ethylene from ethane is the most energy-intensive unit operation process in the chemical industry. Therefore, the development of more energy-efficient processes for ethylene purification is highly desirable. Membrane-based separation has been proposed as an alternative option for replacement or debottlenecking of C splitters but current polymer membrane materials exhibit insufficient mixed-gas CH/CH selectivity (
Original languageEnglish (US)
Pages (from-to)3265-3272
Number of pages8
JournalRSC Adv.
Volume7
Issue number6
DOIs
StatePublished - 2017

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