{"id":5237,"date":"2024-06-25T15:37:36","date_gmt":"2024-06-25T13:37:36","guid":{"rendered":"https:\/\/gpt.i3a.es\/?p=5237"},"modified":"2025-02-25T15:49:47","modified_gmt":"2025-02-25T13:49:47","slug":"alex_lete","status":"publish","type":"post","link":"https:\/\/gpt.i3a.es\/es\/alex_lete\/","title":{"rendered":"Alejandro Lete"},"content":{"rendered":"
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    Investigadores<\/a><\/h3>\n

    Alejandro Lete<\/strong><\/h1>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/li>\n\t\t<\/ul>\t\t\t\t
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       <\/p>\n

      Email:<\/strong> alete@unizar.es<\/a><\/p>\n

      Address:<\/strong> c\/Mariano Esquillor SN Edificio I+D+i, I3A, Zaragoza (Spain)<\/p>\n<\/blockquote>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>\n\n

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      \n\t\t\t\t\t\tSOBRE M\u00cd\t\t\t\t\t\t<\/h5>\n\t\t\t\t\t\t\t\t\t\t\t
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      Performing my PhD Research on the valorization of biomass-derived byproducts to create renewable and sustainable products. My primary research focuses on the catalytic transformation of glycerol, the main byproduct of biodiesel production, into valuable chemicals including ketones and hydrogen.\u00a0<\/span><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>

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      2025<\/h3>

      Lete, Alejandro; Lacleta, Francisco; Garc\u00eda, Luc\u00eda; Ruiz, Joaqu\u00edn; Arauzo, Jes\u00fas<\/p>

      Effect of calcination temperature and atmosphere on the properties and performance of CuAl catalysts for glycerol dehydration to acetol<\/a> Art\u00edculo de revista<\/span> <\/p>

      En: <\/span>Biomass and Bioenergy, <\/span>vol. 195, <\/span>pp. 107725, <\/span>2025<\/span>, ISSN: 0961-9534<\/span>.<\/p>

      Resumen<\/a><\/span> | Enlaces<\/a><\/span> | BibTeX<\/a><\/span><\/p>

      @article{lete_effect_2025,
      \r\ntitle = {Effect of calcination temperature and atmosphere on the properties and performance of CuAl catalysts for glycerol dehydration to acetol},
      \r\nauthor = {Alejandro Lete and Francisco Lacleta and Luc\u00eda Garc\u00eda and Joaqu\u00edn Ruiz and Jes\u00fas Arauzo},
      \r\nurl = {https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0961953425001369},
      \r\ndoi = {10.1016\/j.biombioe.2025.107725},
      \r\nissn = {0961-9534},
      \r\nyear  = {2025},
      \r\ndate = {2025-04-01},
      \r\nurldate = {2025-04-01},
      \r\njournal = {Biomass and Bioenergy},
      \r\nvolume = {195},
      \r\npages = {107725},
      \r\nabstract = {A series of CuAl catalysts were prepared by the coprecipitation method. The objective of this study was to investigate the influence of different calcination temperatures (500, 600, and 675\u00a0\u00b0C) and calcination atmospheres (N2 or air) on the catalysts physicochemical properties and performance in the gas-phase glycerol dehydration to acetol. The catalytic tests were carried out in a fixed bed reactor at 250\u00a0\u00b0C, atmospheric pressure, and a catalyst weight to glycerol flow rate ratio (W\/m) of 30 gCatalyst min gGlycerol\u22121. The catalysts were characterized by ICP-OES, N2 adsorption-desorption, X-ray diffraction (XRD), H2 temperature programmed reduction (H2-TPR), temperature gravimetric analysis (TGA), and elemental analysis. The characterization results revealed that both calcination temperature and calcination atmosphere influenced the textural and metallic properties. Increasing the calcination temperature lowered the reduction temperature, and decreased the surface area. The calcination atmosphere influenced the surface area and pore diameter, and the N2 atmosphere generated a larger pore diameter. The best catalytic activity was achieved by the CuAl-675-N catalyst calcined at 675\u00a0\u00b0C in a N2 atmosphere, which produced a glycerol conversion of 99.0 % and an acetol yield of 67.3 %. The superior performance could be attributed to textural properties, the Cu phase, and minimized carbon deposition, establishing it as one efficient catalyst derived from inexpensive and widely available metals. This work proposes an economical and simple technique based on calcination to improve the catalytic activity of Cu-based catalysts.},
      \r\nkeywords = {},
      \r\npubstate = {published},
      \r\ntppubtype = {article}
      \r\n}
      \r\n<\/pre><\/div>
      Cerrar<\/a><\/p><\/div>
      A series of CuAl catalysts were prepared by the coprecipitation method. The objective of this study was to investigate the influence of different calcination temperatures (500, 600, and 675\u00a0\u00b0C) and calcination atmospheres (N2 or air) on the catalysts physicochemical properties and performance in the gas-phase glycerol dehydration to acetol. The catalytic tests were carried out in a fixed bed reactor at 250\u00a0\u00b0C, atmospheric pressure, and a catalyst weight to glycerol flow rate ratio (W\/m) of 30 gCatalyst min gGlycerol\u22121. The catalysts were characterized by ICP-OES, N2 adsorption-desorption, X-ray diffraction (XRD), H2 temperature programmed reduction (H2-TPR), temperature gravimetric analysis (TGA), and elemental analysis. The characterization results revealed that both calcination temperature and calcination atmosphere influenced the textural and metallic properties. Increasing the calcination temperature lowered the reduction temperature, and decreased the surface area. The calcination atmosphere influenced the surface area and pore diameter, and the N2 atmosphere generated a larger pore diameter. The best catalytic activity was achieved by the CuAl-675-N catalyst calcined at 675\u00a0\u00b0C in a N2 atmosphere, which produced a glycerol conversion of 99.0 % and an acetol yield of 67.3 %. The superior performance could be attributed to textural properties, the Cu phase, and minimized carbon deposition, establishing it as one efficient catalyst derived from inexpensive and widely available metals. This work proposes an economical and simple technique based on calcination to improve the catalytic activity of Cu-based catalysts.<\/div>
      Cerrar<\/a><\/p><\/div>