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The formation of OBMF was related to the amount of Br\u00f8nsted acid sites, and the lowest yield of OBMF was obtained with supported HPAs. However, the Lewis acidity of the HPA supported on Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> favored the formation of 2,5\u2010dimethylfurane. The effects of solvent, catalyst loading, temperature, and reaction time on the selectivity to OBMF from 5\u2010HMF were studied to optimize OBMF production using bulk Preyssler HPAs; a yield of 84\u2009% to OBMF was obtained at 5\u2005h and 343\u2005K. These results demonstrate that bulk Preyssler HPA is a good candidate for OBMF synthesis under mild reaction conditions.<\/jats:p>","DOI":"10.1002\/cctc.201700457","type":"journal-article","created":{"date-parts":[[2017,4,24]],"date-time":"2017-04-24T23:22:52Z","timestamp":1493076172000},"page":"3322-3329","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["Preyssler Heteropolyacids in the Self\u2010Etherification of 5\u2010Hydroxymethylfurfural to 5,5\u2032\u2010[Oxybis(methylene)]bis\u20102\u2010furfural Under Mild Reaction Conditions"],"prefix":"10.1002","volume":"9","author":[{"given":"Alexander","family":"P\u00e1ez","sequence":"first","affiliation":[{"name":"Escuela de Ciencias Qu\u00edmicas Facultad de Ciencias Universidad Pedag\u00f3gica y Tecnol\u00f3gica de Colombia UPTC  Avenida Central del Norte, Tunja Boyac\u00e1 Colombia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3906-4522","authenticated-orcid":false,"given":"Hugo A.","family":"Rojas","sequence":"additional","affiliation":[{"name":"Escuela de Ciencias Qu\u00edmicas Facultad de Ciencias Universidad Pedag\u00f3gica y Tecnol\u00f3gica de Colombia UPTC  Avenida Central del Norte, Tunja Boyac\u00e1 Colombia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3740-8424","authenticated-orcid":false,"given":"Omar","family":"Portilla","sequence":"additional","affiliation":[{"name":"Centro de Investigaci\u00f3n y Desarrollo en Ciencias Aplicadas \u201cDr. J.\u2005J. 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