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The objective was to improve the efficient utilization of impure biomethanol for hydrogen production. The introduction of 1\u2009mol% ethanol decreased the methanol conversion and hydrogen production rates over CZA, Co\u2010CZA, Pd\u2010CZA, and Pt\u2010CZA catalysts during the initial reaction stage, with further decline over time. In contrast, Ni\u2010CZA, Ru\u2010CZA, and Rh\u2010CZA maintained stable activity under identical conditions. Ethanol was converted mainly into C1\u2013C3 byproducts such as methane, acetaldehyde, and methyl acetate on CZA, Co\u2010CZA, Pd\u2010CZA, and Pt\u2010CZA, whereas Ni\u2010CZA, Ru\u2010CZA, and Rh\u2010CZA predominantly formed methane and carbon monoxide with negligible formation of carbonaceous species. Temperature\u2010programmed oxidation indicated the deposition of carbonaceous species on spent CZA, Co\u2010CZA, Pd\u2010CZA, and Pt\u2010CZA, but not on Ni\u2010, Ru\u2010, or Rh\u2010modified catalysts. These results suggest that Ni, Ru, and Rh enhance C\u2013C bond cleavage in lower alcohols, thereby suppressing carbon deposition and improving catalyst durability. This study provides practical insights for designing efficient ATR catalysts for on\u2010site hydrogen generation from biomethanol containing impurities.\n                  <\/jats:p>","DOI":"10.1002\/open.202600010","type":"journal-article","created":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T07:46:49Z","timestamp":1779176809000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["High\u2010Durability Metal\u2010Doped Cu\/ZnO\/Al\n                    <sub>2<\/sub>\n                    O\n                    <sub>3<\/sub>\n                    Catalysts for Reforming of Model Biomethanol"],"prefix":"10.1002","volume":"15","author":[{"given":"Katsutoshi","family":"Nomoto","sequence":"first","affiliation":[{"name":"Department of Applied Chemistry for Environment Graduate School of Urban Environmental Sciences Tokyo Metropolitan University  Tokyo 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