relation: https://khub.utp.edu.my/scholars/11316/ title: Selective Separation of Methane from Carbon Dioxide through sII Hydrates Formation in a Semibatch Process creator: Partoon, B. creator: Sabil, K.M. creator: Lau, K.K. creator: Nasrifar, K. creator: Shariff, A.M. description: One of the challenges for production of natural gas from very sour gas reservoirs with CO2 content up to 80 is the high cost of purification process. The hydrate-based gas separation (HBGS) process is gaining interest globally as a greener solution for separation of CO2 from gaseous streams including sour hydrocarbon mixtures. However, separation of large amounts of CO2 through gas hydrate formation typically leads to considerable loss of hydrocarbons. In this work, selective capturing of CH4 from high CO2 gas mixtures is investigated. Two water-soluble thermodynamic promoters, tetrahydrofuran (THF) and acetone, are used for this purpose. The results indicate that inclusion of these promoters dramatically increased CH4 uptake by sII hydrate formation. However, only THF exhibited a favorable selectivity of CH4. Moreover, this effect is pressure dependent, and the optimum pressure is around 4.5 MPa. Copyright © 2019 American Chemical Society. publisher: American Chemical Society date: 2019 type: Article type: PeerReviewed identifier: Partoon, B. and Sabil, K.M. and Lau, K.K. and Nasrifar, K. and Shariff, A.M. (2019) Selective Separation of Methane from Carbon Dioxide through sII Hydrates Formation in a Semibatch Process. Industrial and Engineering Chemistry Research, 58 (36). pp. 16834-16842. ISSN 08885885 relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072331296&doi=10.1021%2facs.iecr.9b01212&partnerID=40&md5=7383f7e2d535a055de9950cb56966598 relation: 10.1021/acs.iecr.9b01212 identifier: 10.1021/acs.iecr.9b01212