Peony-like Pentahedral Al(III)-Enriched Alumina Nanosheets for the Dehydrogenation of Propane,ACS Applied Nano Materials

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Peony-like Pentahedral Al(III)-Enriched Alumina Nanosheets for the Dehydrogenation of Propane
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2019-08-28 , DOI: 10.1021/acsanm.9b01293
Neng Gong ₁ , Zhongkui Zhao ₁

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In this work, a peony-like coordinatively unsaturating pentahedral aluminum(III)-enriched alumina nanosheet (Al₂O₃-MG) was successfully prepared by a facile glocuse-assisted hydrothermal approach. In this process, the as-prepared melamine-Al(NO₃)₃ complex acts as Al source, structural directing agent, and precipitant, and the glucose serves as coordination-modulating, isolating, and structure-directing agent. More interestingly, benefitting from the unique morphology and abundant coordinatively unsaturating pentahedral aluminum(III) sites of carrier, the supported Pt–Sn catalyst (Pt–Sn/Al₂O₃-MG) shows excellent catalytic performance. It gives 26.5% steady-state propane conversion with 99.1% propene selectivity and unexpected catalytic durability for direct dehydrogenation of propane to propene under harsh reaction conditions. This work not only creates an excellent alumina support for highly efficient propane-to-propene catalyst but also opens up a window for designing the other oxide supports with diverse morphologies and coordination states regarding a variety of reactions.

中文翻译：

牡丹样五面体铝（III）富集的氧化铝纳米片用于丙烷的脱氢

在这项工作中，成功地通过一种容易的声乐辅助水热法成功地制备了一种牡丹状的配位不饱和五面体铝（III）富集的氧化铝纳米片（Al ₂ O ₃ -MG）。在该过程中，所制备的蜜胺-Al（NO ₃）₃络合物充当Al源，结构导向剂和沉淀剂，而葡萄糖用作配位调节，分离和结构导向剂。更有趣的是，得益于载体，负载型Pt-Sn催化剂（Pt-Sn / Al ₂ O ₃-MG）显示出优异的催化性能。在苛刻的反应条件下，丙烷直接脱氢为丙烯，可提供26.5％的稳态丙烷转化率和99.1％的丙烯选择性，并具有出乎意料的催化耐久性。这项工作不仅为高效丙烷-丙烯催化剂创造了出色的氧化铝载体，而且为设计具有各种形态和关于各种反应的配位态的其他氧化物载体打开了一个窗口。

更新日期：2019-08-28

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