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Thermo‐Photocatalytic Methanol Reforming for Hydrogen Production over a CuPd−TiO2 Catalyst
ChemPhotoChem ( IF 3.0 ) Pub Date : 2020-05-14 , DOI: 10.1002/cptc.202000010 A. López‐Martín 1 , F. Platero 1 , A. Caballero 1 , Gerardo Colón 1
ChemPhotoChem ( IF 3.0 ) Pub Date : 2020-05-14 , DOI: 10.1002/cptc.202000010 A. López‐Martín 1 , F. Platero 1 , A. Caballero 1 , Gerardo Colón 1
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A bimetallic CuPd/TiO2 system has been prepared by a two‐step synthesis and was used for a methanol steam photoreforming reaction. By sequential deposition, palladium is deposited over copper nanoclusters through a galvanic replacement process. Hydrogen production by steam reforming from methanol was achieved by both thermo‐photocatalytic and photocatalytic processes. It appears that H2 production on the bimetallic system is notably higher than the Pd monometallic reference. Moreover this difference in the catalytic performance could be related to the higher CO evolution observed for the monometallic Pd1.0 TiO2 system which is partially inhibited in the bimetallic catalyst. In addition, an important thermal effect can be envisaged in all cases. Nevertheless, this improved effect in the thermo‐photocatalytic process is accompanied by a remarkable CO evolution and SMSI effect (important strong metal‐support interactions) that hindered the efficiency as temperature increases. On this basis, optimal operational conditions for H2 production are obtained for thermo‐photocatalytic reforming at 100 °C, for which the synergetic effect is higher with lower CO production (H2/CO=4).
中文翻译：
CuPd-TiO2催化剂上热光催化甲醇重整制氢
通过两步合成制备了双金属CuPd / TiO 2系统，该系统用于甲醇蒸汽的光重整反应。通过顺序沉积，通过电镀置换过程将钯沉积在铜纳米簇上。通过热光催化和光催化过程均可以从甲醇中进行蒸汽重整制氢。看来双金属体系上的H 2产生明显高于Pd单金属参考。此外，这种催化性能的差异可能与单金属Pd 1.0 TiO 2观察到的更高的CO释放有关。在双金属催化剂中被部分抑制的体系。此外，在所有情况下都可以设想出重要的热效应。然而，在热光催化过程中这种改善的效果伴随着显着的CO放出和SMSI效应（重要的强金属-载体相互作用），随着温度升高而阻碍了效率。在此基础上，获得了在100°C下进行热光催化重整的最佳H 2生产操作条件，其协同效应较高，而CO产量较低（H 2 / CO = 4）。
更新日期：2020-05-14
中文翻译：
CuPd-TiO2催化剂上热光催化甲醇重整制氢
通过两步合成制备了双金属CuPd / TiO 2系统，该系统用于甲醇蒸汽的光重整反应。通过顺序沉积，通过电镀置换过程将钯沉积在铜纳米簇上。通过热光催化和光催化过程均可以从甲醇中进行蒸汽重整制氢。看来双金属体系上的H 2产生明显高于Pd单金属参考。此外，这种催化性能的差异可能与单金属Pd 1.0 TiO 2观察到的更高的CO释放有关。在双金属催化剂中被部分抑制的体系。此外，在所有情况下都可以设想出重要的热效应。然而，在热光催化过程中这种改善的效果伴随着显着的CO放出和SMSI效应（重要的强金属-载体相互作用），随着温度升高而阻碍了效率。在此基础上，获得了在100°C下进行热光催化重整的最佳H 2生产操作条件，其协同效应较高，而CO产量较低（H 2 / CO = 4）。
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