Interaction-selective molecular sieving adsorbent for direct separation of ethylene from senary C₂-C₄ olefin/paraffin mixture.

ABSTRACT: Olefin/paraffin separations are among the most energy-intensive processes in the petrochemical industry, with ethylene being the most widely consumed chemical feedstock. Adsorptive separation utilizing molecular sieving adsorbents can optimize energy efficiency, whereas the size-exclusive mechanism alone cannot achieve multiple olefin/paraffin sieving in a single adsorbent. Herein, an unprecedented sieving adsorbent, BFFOUR-Cu-dpds (BFFOUR = BF₄^-, dpds = 4,4'-bipyridinedisulfide), is reported for simultaneous sieving of C₂-C₄ olefins from their corresponding paraffins. The interlayer spaces can be selectively opened through stronger guest-host interactions induced by unsaturated C = C bonds in olefins, as opposed to saturated paraffins. In equimo

SUBMITTER: Peng Y 

PROVIDER: S-EPMC10799885 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature