Szalad Horatiu, Peng Yong, Gosch Jonas Werner, Baldi Andrea, Askes Sven H C, Albero Josep, García Hermenegildo
Instituto Universitario de Tecnología Química (CSIC-UPV), Universitat Politècnica de Valènica, Avda. De los Naranjos s/n, 46022 Valencia, Spain.
Department of Physics and Astronomy, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, Netherlands.
ACS Catal. 2025 Feb 19;15(5):3836-3845. doi: 10.1021/acscatal.5c00247. eCollection 2025 Mar 7.
Solar photocatalysis appears as a viable approach for the production of value-added chemicals from CO. However, up to now, there is no information on the influence of the light intensity on the product distribution of CO hydrogenation and the modeling of the actual local temperature at the catalytic sites for typical nanoparticulate photocatalysts. Herein, it is shown that for a photothermal catalyst containing a high density of homogeneously distributed Ru nanoparticles, the collective heating prevails, resulting in a homogeneous temperature distribution in the material that should be relatively close to that of the support and that can be measured macroscopically. Moreover, light intensity has a clear influence on product distribution due to the differences in the local temperature, and therefore, attention should be paid to stable operating conditions, temperature, and CO conversion that can result in remarkable differences in product selectivity for the same catalyst as a function of light intensity.
太阳能光催化似乎是一种从一氧化碳生产高附加值化学品的可行方法。然而，到目前为止，对于典型纳米颗粒光催化剂，尚无关于光强度对一氧化碳加氢产物分布的影响以及催化位点实际局部温度建模的相关信息。在此表明，对于含有高密度均匀分布钌纳米颗粒的光热催化剂，集体加热占主导，导致材料中温度分布均匀，该温度应相对接近载体温度且可宏观测量。此外，由于局部温度差异，光强度对产物分布有明显影响，因此，对于同一催化剂，应注意稳定的操作条件、温度和一氧化碳转化率，这些因素会因光强度不同而导致产物选择性出现显著差异。
