000151216 001__ 151216
000151216 005__ 20251017144639.0
000151216 0247_ $$2doi$$a10.1016/j.biombioe.2025.107725
000151216 0248_ $$2sideral$$a143032
000151216 037__ $$aART-2025-143032
000151216 041__ $$aeng
000151216 100__ $$0(orcid)0000-0002-2866-9035$$aLete, Alejandro$$uUniversidad de Zaragoza
000151216 245__ $$aEffect of calcination temperature and atmosphere on the properties and performance of CuAl catalysts for glycerol dehydration to acetol
000151216 260__ $$c2025
000151216 5060_ $$aAccess copy available to the general public$$fUnrestricted
000151216 5203_ $$aA 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 °C) 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 °C, atmospheric pressure, and a catalyst weight to glycerol flow rate ratio (W/m) of 30 gCatalyst min gGlycerol−1. 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 °C 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.
000151216 536__ $$9info:eu-repo/grantAgreement/ES/DGA/T22-23R$$9info:eu-repo/grantAgreement/ES/MCINN/PID2020-114985RB-I00
000151216 540__ $$9info:eu-repo/semantics/embargoedAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000151216 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000151216 700__ $$aLacleta, Francisco
000151216 700__ $$0(orcid)0000-0001-7115-9025$$aGarcía, Lucía$$uUniversidad de Zaragoza
000151216 700__ $$0(orcid)0000-0002-2924-3095$$aRuiz, Joaquín$$uUniversidad de Zaragoza
000151216 700__ $$0(orcid)0000-0002-5959-3168$$aArauzo, Jesús$$uUniversidad de Zaragoza
000151216 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000151216 773__ $$g195 (2025), 107725 [8 pp.]$$pBiomass bioenergy$$tBIOMASS & BIOENERGY$$x0961-9534
000151216 8564_ $$s746869$$uhttps://zaguan.unizar.es/record/151216/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2027-04-01
000151216 8564_ $$s1792852$$uhttps://zaguan.unizar.es/record/151216/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2027-04-01
000151216 909CO $$ooai:zaguan.unizar.es:151216$$particulos$$pdriver
000151216 951__ $$a2025-10-17-14:31:09
000151216 980__ $$aARTICLE