{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,11]],"date-time":"2025-11-11T13:26:42Z","timestamp":1762867602657,"version":"build-2065373602"},"reference-count":72,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2018,11,7]],"date-time":"2018-11-07T00:00:00Z","timestamp":1541548800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000266","name":"Engineering and Physical Sciences Research Council","doi-asserted-by":"publisher","award":["EP\/L016419\/1"],"award-info":[{"award-number":["EP\/L016419\/1"]}],"id":[{"id":"10.13039\/501100000266","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>We have investigated the synthesis and application of Au-Cu\/CeO2 (Cu: Au = 2) in the continuous gas phase (P = 1 atm; T = 498 K) coupled hydrogenation of 5-hydroxymethyl-2-furaldehyde (HMF) with 2-butanol dehydrogenation. STEM-EDX analysis revealed a close surface proximity of both metals in Au-Cu\/CeO2 post-TPR. XPS measurements suggest (support \u2192 metal) charge transfer to form Au\u03b4\u2212 and strong metal-support interactions to generate Cu0 and Cu+. Au-Cu\/CeO2 promoted the sole formation of 2,5-dihydroxymethylfuran (DHMF) and 2-butanone in the HMF\/2-butanol coupling with full hydrogen utilisation. Under the same reaction conditions, Au\/CeO2 was fully selective to DHMF in standard HMF hydrogenation (using an external hydrogen supply), but delivered a lower production rate and utilised less than 0.2% of the hydrogen supplied. Exclusive -C=O hydrogenation and -OH dehydrogenation is also demonstrated for the coupling of a series of m-substituted (-CH3, -CH2CH3, -CH2OH, -CF3, -N(CH3)2, -H) furaldehydes with alcohol (1-propanol, 1-butanol, 2-propanol, 2-butanol, cyclohexanol) dehydrogenation over Au-Cu\/CeO2, consistent with a nucleophilic mechanism. In each case, we observed a greater hydrogenation rate and hydrogen utilisation efficiency with a 3\u201315 times lower E-factor in the coupling process relative to standard hydrogenation. Our results demonstrate the feasibility of using hydrogen generated in situ through alcohol dehydrogenation for the selective hydrogenation of m-furaldehydes with important industrial applications.<\/jats:p>","DOI":"10.3390\/molecules23112905","type":"journal-article","created":{"date-parts":[[2018,11,7]],"date-time":"2018-11-07T10:32:07Z","timestamp":1541586727000},"page":"2905","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Gas Phase Hydrogenation of Furaldehydes via Coupling with Alcohol Dehydrogenation over Ceria Supported Au-Cu"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4275-2529","authenticated-orcid":false,"given":"Chiara","family":"Pischetola","sequence":"first","affiliation":[{"name":"Chemical Engineering, School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh EH14 4AS, Scotland, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laura","family":"Collado","sequence":"additional","affiliation":[{"name":"Chemical Engineering, School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh EH14 4AS, Scotland, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark A.","family":"Keane","sequence":"additional","affiliation":[{"name":"Chemical Engineering, School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh EH14 4AS, Scotland, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fernando","family":"C\u00e1rdenas-Lizana","sequence":"additional","affiliation":[{"name":"Chemical Engineering, School of Engineering and Physical Sciences, Heriot Watt University, Edinburgh EH14 4AS, Scotland, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,11,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"539","DOI":"10.1039\/b922014c","article-title":"Technology development for the production of biobased products from biorefinery carbohydrates\u2014The US Department of Energy\u2019s \u201cTop 10\u201d revisited","volume":"12","author":"Bozell","year":"2010","journal-title":"Green Chem."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1499","DOI":"10.1021\/cr300182k","article-title":"Hydroxymethylfurfural, a versatile platform chemical made from renewable resources","volume":"113","author":"Rasrendra","year":"2013","journal-title":"Chem. 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