{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T02:23:50Z","timestamp":1776133430726,"version":"3.50.1"},"reference-count":18,"publisher":"Wiley","issue":"19","license":[{"start":{"date-parts":[[2020,4,29]],"date-time":"2020-04-29T00:00:00Z","timestamp":1588118400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/50011\/2020 & UIDP\/50011\/2020"],"award-info":[{"award-number":["UIDB\/50011\/2020 & UIDP\/50011\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["PD\/BD\/142849\/2018"],"award-info":[{"award-number":["PD\/BD\/142849\/2018"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Eur J Inorg Chem"],"published-print":{"date-parts":[[2020,5,22]]},"abstract":"<jats:p>The many studies that have been conducted on water adsorption on zeolites were carried out in \u201cadsorption\u201d mode, from adsorption isotherms or single\u2010point measurements, with the samples being first degassed at high temperature, and then exposed to water vapor at variable partial pressure. Here, we report Thermogravimetric Analysis (TGA) studies of HZSM\u20105 saturated with water at room temperature, thus studying water adsorption in \u201cdesorption\u201d mode. TGA was used to ascertain the amount of water remaining as a function of the pretreatment temperature, and to identify the temperature at which one water molecule per framework Al atom persists. Solid\u2010state <jats:sup>1<\/jats:sup>H NMR spectroscopy, combined with molecular modeling, provided evidence for water molecules hydrogen bonded to Br\u00f8nsted acid sites and formation of oxonium species for distinct water per framework Al atom. TGA is shown to be a simple and expeditious technique to measure the number of Br\u00f8nsted acid sites in aluminosilicate zeolites, with advantages over the traditional methods of IR or TPD of dangerous adsorbed ammonia or pyridine. TGA of adsorbed water also provides information on the water clusters formed at the acid sites of HZSM\u20105, which are proportional to the number of acid sites.<\/jats:p>","DOI":"10.1002\/ejic.202000050","type":"journal-article","created":{"date-parts":[[2020,4,7]],"date-time":"2020-04-07T09:33:50Z","timestamp":1586252030000},"page":"1860-1866","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Quantification of Br\u00f8nsted Acid Sites in Zeolites by Water Desorption Thermogravimetry"],"prefix":"10.1002","volume":"2020","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0325-2356","authenticated-orcid":false,"given":"Carlos","family":"Bornes","sequence":"first","affiliation":[{"name":"CICECO, Aveiro Institute of Materials Department of Chemistry University of Aveiro  3810\u2010193 Aveiro Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1267-5190","authenticated-orcid":false,"given":"Jeffrey A.","family":"Amelse","sequence":"additional","affiliation":[{"name":"CICECO, Aveiro Institute of Materials Department of Chemistry University of Aveiro  3810\u2010193 Aveiro Portugal"},{"name":"Department of Chemistry BP Amoco Chemical Company Petrochemicals Technology  Naperville IL USA"}]},{"given":"Mark","family":"Peacock","sequence":"additional","affiliation":[{"name":"Department of Chemistry BP Petrochemicals Technology  Hull UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1285-7648","authenticated-orcid":false,"given":"Christopher L.","family":"Marshall","sequence":"additional","affiliation":[{"name":"Chemical Sciences and Engineering Division Department of Chemistry Argonne National Laboratory  Lemont IL USA"}]},{"given":"Michael M.","family":"Schwartz","sequence":"additional","affiliation":[{"name":"Chemical Sciences and Engineering Division Department of Chemistry Argonne National Laboratory  Lemont IL USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0837-8329","authenticated-orcid":false,"given":"Carlos F. 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