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The intrinsically active surface in a Pt/γ-Mo2N catalyst for the water-gas shift reaction: Molybdenum nitride or molybdenum oxide?
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-07-13 , DOI: 10.1021/jacs.9b11088 Zhe-Shan Zhang 1 , Qiang Fu 1 , Kai Xu 1 , Wei-Wei Wang 1 , Xin-Pu Fu 1 , Xu-Sheng Zheng 2 , Ke Wu 3 , Chao Ma 4 , Rui Si 5 , Chun-Jiang Jia 1 , Ling-Dong Sun 3 , Chun-Hua Yan 3
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-07-13 , DOI: 10.1021/jacs.9b11088 Zhe-Shan Zhang 1 , Qiang Fu 1 , Kai Xu 1 , Wei-Wei Wang 1 , Xin-Pu Fu 1 , Xu-Sheng Zheng 2 , Ke Wu 3 , Chao Ma 4 , Rui Si 5 , Chun-Jiang Jia 1 , Ling-Dong Sun 3 , Chun-Hua Yan 3
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Apart from active metals, supports also contribute significantly to the catalytic performance of supported metal cata-lysts. On account of the formed strain and defects, the hetero-structured surface of the support may play a crucial role to activate the reactant molecules, while it is usually neglected. In this work, the Pt/γ-Mo2N catalyst was prepared via a facile solution method. This Pt/γ-Mo2N catalyst showed excellent activity and stability for catalyzing the water-gas shift (WGS) reaction. The reaction rates at 240 °C were 16.5 molCO molPt -1s-1 in product-free gas and 5.36 molCO molPt-1 s-1 in full reformate gas, which were almost 20 times over that of the catalysts reported. It is found that molybdenum spe-cies in the surface of the Pt/γ-Mo2N catalyst is molybdenum oxide as MoO3. This surface MoO3 is very easy to be reduced even at room temperature, and it transformed into highly distorted MoOx (2
中文翻译：
用于水煤气变换反应的 Pt/γ-Mo2N 催化剂的固有活性表面：氮化钼还是氧化钼？
除了活性金属外，载体也对负载金属催化剂的催化性能有显着贡献。由于形成的应变和缺陷，载体的异质结构表面可能对激活反应物分子起着至关重要的作用，而它通常被忽略。在这项工作中，Pt/γ-Mo2N 催化剂是通过简便的溶液法制备的。这种 Pt/γ-Mo2N 催化剂在催化水煤气变换 (WGS) 反应方面表现出优异的活性和稳定性。240 °C 下的反应速率在无产物气体中为 16.5 molCO molPt -1s-1，在完全重整气中为 5.36 molCO molPt-1 s-1，几乎是报道的催化剂的 20 倍。发现Pt/γ-Mo2N催化剂表面的钼种类是氧化钼MoO3。
更新日期：2020-07-13
中文翻译：
用于水煤气变换反应的 Pt/γ-Mo2N 催化剂的固有活性表面：氮化钼还是氧化钼？
除了活性金属外，载体也对负载金属催化剂的催化性能有显着贡献。由于形成的应变和缺陷，载体的异质结构表面可能对激活反应物分子起着至关重要的作用，而它通常被忽略。在这项工作中，Pt/γ-Mo2N 催化剂是通过简便的溶液法制备的。这种 Pt/γ-Mo2N 催化剂在催化水煤气变换 (WGS) 反应方面表现出优异的活性和稳定性。240 °C 下的反应速率在无产物气体中为 16.5 molCO molPt -1s-1，在完全重整气中为 5.36 molCO molPt-1 s-1，几乎是报道的催化剂的 20 倍。发现Pt/γ-Mo2N催化剂表面的钼种类是氧化钼MoO3。
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