{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T17:22:40Z","timestamp":1784740960691,"version":"3.55.0"},"reference-count":41,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2025,2,26]],"date-time":"2025-02-26T00:00:00Z","timestamp":1740528000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"College Students Innovation and Entrepreneurship Training Program of Hebei Province","award":["S202410094045"],"award-info":[{"award-number":["S202410094045"]}]},{"name":"College Students Innovation and Entrepreneurship Training Program of Hebei Province","award":["L2024ZD03"],"award-info":[{"award-number":["L2024ZD03"]}]},{"name":"Key Development Foundation of Hebei Normal University","award":["S202410094045"],"award-info":[{"award-number":["S202410094045"]}]},{"name":"Key Development Foundation of Hebei Normal University","award":["L2024ZD03"],"award-info":[{"award-number":["L2024ZD03"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>A group of silica-based supports with varying Al\/Si ratios (S\u2212x) was synthesized using the sol\u2013gel method, followed by a chlorosulfonic acid modification to produce supported sulfonic acids (SA\u2212x). The S\u2212x and SA\u2212x materials, along with their adsorption products, were characterized via techniques such as FTIR, BET, and HPLC-MS. The analysis revealed that the sulfonic acid groups in the SA\u2212x materials existed in two anchoring states: the covalently bonded (CB) state [SiOx\u2013O]\u0257\u2212\u2013SO3H\u0257+ and the ion-paired (IP) state AlOy+:OSO3H\u2212. The sulfonation reactivity of the CB-state sulfonic acid was enhanced, whereas that of the IP-state counterpart was diminished. The incorporation of a minor quantity of aluminum ions (x = 0.1) markedly enhanced the adsorption efficiency of SAs for o-xylene, extending the reaction temperature range to 110\u2013190 \u00b0C and increasing the breakthrough adsorption capacity (QB) to 946.1 mg g\u22121. However, excessive aluminum ion incorporation was detrimental to the adsorption performance of SAs for o-xylene. SA\u22120.1 showed superior adsorptive capabilities and excellent recyclability, maintaining its performance over four consecutive adsorption\/regeneration cycles with only a minor decrease of 4.5%. These findings suggest that SAs prepared with a minor amount of aluminum ions have significant potential for application as adsorbents for the removal of benzene series pollutants.<\/jats:p>","DOI":"10.3390\/molecules30051073","type":"journal-article","created":{"date-parts":[[2025,2,26]],"date-time":"2025-02-26T11:22:12Z","timestamp":1740568932000},"page":"1073","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Influence of Aluminum Incorporation on the Adsorptive Performance of Silica-Based Supported Sulfonic Acid for the Chemical Recovery of Gaseous O-Xylene"],"prefix":"10.3390","volume":"30","author":[{"given":"Yaxu","family":"Wang","sequence":"first","affiliation":[{"name":"Hebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang 050024, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiaxuan","family":"Chai","sequence":"additional","affiliation":[{"name":"Hebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang 050024, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yining","family":"Li","sequence":"additional","affiliation":[{"name":"Hebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang 050024, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7998-1088","authenticated-orcid":false,"given":"Zichuan","family":"Ma","sequence":"additional","affiliation":[{"name":"Hebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang 050024, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,2,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"218","DOI":"10.1016\/j.jtice.2017.02.019","article-title":"Application of silica gel in removing high concentrations toluene vapor by adsorption and desorption process","volume":"74","author":"Sui","year":"2017","journal-title":"J. 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