{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T10:49:27Z","timestamp":1791974967713,"version":"4.4.0"},"update-to":[{"DOI":"10.1039\/d3ra05858a","type":"expression_of_concern","label":"Expression of concern","source":"publisher","updated":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T00:00:00Z","timestamp":1791936000000}}],"reference-count":0,"publisher":"Royal Society of Chemistry (RSC)","license":[{"start":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T00:00:00Z","timestamp":1791936000000},"content-version":"vor","delay-in-days":286,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"funder":[{"DOI":"10.13039\/501100002383","name":"King Saud University","doi-asserted-by":"publisher","award":["RSP2023R43"],"award-info":[{"award-number":["RSP2023R43"]}],"id":[{"id":"10.13039\/501100002383","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010661","name":"Horizon 2020 Framework Programme","doi-asserted-by":"publisher","award":["847639"],"award-info":[{"award-number":["847639"]}],"id":[{"id":"10.13039\/501100010661","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["rsc.org"],"crossmark-restriction":true},"short-container-title":["RSC Adv."],"abstract":"<jats:p>\n                    Expression of concern for \u2018Development of a chromium oxide loaded mesoporous silica as an efficient catalyst for carbon dioxide-free production of ethylene oxide\u2019 by Muhammad Maqbool\n                    <jats:italic>et al.<\/jats:italic>\n                    ,\n                    <jats:italic>RSC Adv.<\/jats:italic>\n                    , 2023,\n                    <jats:bold>13<\/jats:bold>\n                    , 32424\u201332432, https:\/\/doi.org\/10.1039\/d3ra05858a.\n                  <\/jats:p>","DOI":"10.1039\/d6ra90149b","type":"journal-article","created":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T10:08:12Z","timestamp":1791972492000},"update-policy":"https:\/\/doi.org\/10.1039\/rsc_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Expression of concern: Development of a chromium oxide loaded mesoporous silica as an efficient catalyst for carbon dioxide-free production of ethylene oxide"],"prefix":"10.1039","author":[{"given":"Muhammad","family":"Maqbool","sequence":"first","affiliation":[{"name":"Department of Chemistry, University of Management and Technology, C-II, Johar Town, 54770, Lahore, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Toheed","family":"Akhter","sequence":"additional","affiliation":[{"name":"Department of Chemistry, University of Management and Technology, C-II, Johar Town, 54770, Lahore, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sadaf Ul","family":"Hassan","sequence":"additional","affiliation":[{"name":"Department of Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asif","family":"Mahmood","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Waheed","family":"Al-Masry","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shumaila","family":"Razzaque","sequence":"additional","affiliation":[{"name":"Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka, 44\/51, 01-224, Warszawa, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"292","published-online":{"date-parts":[[2026]]},"container-title":["RSC Advances"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/pubs.rsc.org\/RA\/article-pdf\/doi\/10.1039\/D6RA90149B\/0\/D6RA90149B.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T10:08:13Z","timestamp":1791972493000},"score":1,"resource":{"primary":{"URL":"http:\/\/pubs.rsc.org\/RA\/article-lookup\/doi\/10.1039\/D6RA90149B"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1039\/d6ra90149b","relation":{},"ISSN":["2046-2069"],"issn-type":[{"value":"2046-2069","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026]]}}}