{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,12]],"date-time":"2026-02-12T09:15:44Z","timestamp":1770887744856,"version":"3.50.1"},"reference-count":61,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2020,3,12]],"date-time":"2020-03-12T00:00:00Z","timestamp":1583971200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Research and Development Center (R&DC) of Saudi Arabian Oil Company"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Global Challenges"],"published-print":{"date-parts":[[2020,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The consumption of natural gas (NG) is rapidly increasing worldwide as it is becoming the second largest fuel source after coal. However, many of the world gas reserves contain high levels of subquality NG including the presence of carbon dioxide (CO<jats:sub>2<\/jats:sub>), hydrogen sulfide (H<jats:sub>2<\/jats:sub>S), nitrogen (N<jats:sub>2<\/jats:sub>), benzene\/toluene\/xylene (BTX) etc., in varying amounts (up to 50% v\/v in some reserves), which constitute several problems. Membrane\u2010based NG sweetening\/upgrading processes emerge as among the fastest growing technologies, due to their lower capital cost, higher energy savings, greater economic viability, etc. as compared to conventional technologies. Thus, a defective\u2010free, multilayer thin\u2010film composite membrane is developed from 6FDA\u2010Durene\/6FDA\u2010CARDO block co\u2010polyimide for the separation of sour gas from NG. The membrane shows good performance as it exhibit CO<jats:sub>2<\/jats:sub>\/CH<jats:sub>4<\/jats:sub> and H<jats:sub>2<\/jats:sub>S\/CH<jats:sub>4<\/jats:sub> selectivities ranges from 8 to 10 and 15 to 19, respectively, and CO<jats:sub>2<\/jats:sub> and H<jats:sub>2<\/jats:sub>S permeance are 122 and 220 GPU, respectively.<\/jats:p>","DOI":"10.1002\/gch2.201900107","type":"journal-article","created":{"date-parts":[[2020,3,12]],"date-time":"2020-03-12T09:51:45Z","timestamp":1584006705000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Development of Thin\u2010Film Composite Membranes from Aromatic Cardo\u2010Type Co\u2010Polyimide for Mixed and Sour Gas Separations from Natural Gas"],"prefix":"10.1002","volume":"4","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6941-4330","authenticated-orcid":false,"given":"Garba O.","family":"Yahaya","sequence":"first","affiliation":[{"name":"Research &amp; Development Center Saudi Aramco  P.O. 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