Fasolini Andrea, Lombardi Erica, Tabanelli Tommaso, Basile Francesco
Dipartimento di Chimica Industriale "Toso Montanari", Alma Mater Studiorum-Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy.
Nanomaterials (Basel). 2021 Apr 29;11(5):1175. doi: 10.3390/nano11051175.
Glycerol aqueous phase reforming (APR) produces hydrogen and interesting compounds at relatively mild temperatures. Among APR catalysts investigated in literature, little attention has been given to Pt supported on TiO. Therefore, herein we propose an innovative titania support which can be obtained through an optimized microemulsion technique. This procedure provided high surface area titania nanospheres, with a peculiar high density of weak acidic sites. The material was tested in the catalytic glycerol APR after Pt deposition. A mechanism hypothesis was drawn, which evidenced the pathways giving the main products. When compared with a commercial TiO support, the synthetized titania provided higher hydrogen selectivity and glycerol conversion thanks to improved catalytic activity and ability to prompt consecutive dehydrogenation reactions. This was correlated to an enhanced cooperation between Pt nanoparticles and the acid sites of the support.
甘油水相重整（APR）在相对温和的温度下产生氢气和有价值的化合物。在文献中研究的APR催化剂中，负载在TiO上的Pt很少受到关注。因此，在此我们提出一种创新的二氧化钛载体，它可以通过优化的微乳液技术获得。该方法提供了高比表面积的二氧化钛纳米球，具有独特的高浓度弱酸性位点。该材料在沉积Pt后用于催化甘油APR测试。提出了一种机理假设，该假设证明了生成主要产物的途径。与市售TiO载体相比，合成的二氧化钛由于催化活性提高和促进连续脱氢反应的能力，提供了更高的氢气选择性和甘油转化率。这与Pt纳米颗粒和载体酸性位点之间增强的协同作用有关。
