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Full Spectrum Decomposition of Formic Acid over γ-Mo2N-Based Catalysts: From Dehydration to Dehydrogenation
ACS Catalysis ( IF 11.3 ) Pub Date : 2020-04-12 , DOI: 10.1021/acscatal.0c00752 Zhongliang Yu 1, 2, 3 , Xiaowei An 4 , Irwan Kurnia 4 , Akihiro Yoshida 3, 4 , Yanyan Yang 1, 5 , Xiaogang Hao 5 , Abuliti Abudula 4 , Yitian Fang 2 , Guoqing Guan 3, 4
ACS Catalysis ( IF 11.3 ) Pub Date : 2020-04-12 , DOI: 10.1021/acscatal.0c00752 Zhongliang Yu 1, 2, 3 , Xiaowei An 4 , Irwan Kurnia 4 , Akihiro Yoshida 3, 4 , Yanyan Yang 1, 5 , Xiaogang Hao 5 , Abuliti Abudula 4 , Yitian Fang 2 , Guoqing Guan 3, 4
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Formic acid (FA) can be considered as CO and H2 carriers via the selective dehydration and dehydrogenation, respectively. Although various catalysts exhibit selective activity for FA decomposition, no active phase has been reported to be effective for both simultaneously. In this work, the FA decompositions over the bulk γ-Mo2N and the nitrogen-doped carbon (NC)-supported γ-Mo2N catalysts were investigated in detail. It is found that both catalysts showed obvious activity at low temperatures (100–200 °C). Interestingly, the reaction pathway was almost completely transformed from the selective dehydration over the bulk γ-Mo2N to the selective dehydrogenation over the NC-supported γ-Mo2N. Moreover, stable FA decomposition performances were observed with these two catalysts during the 45 h tests. The apparent transformation of the decomposition pathway could be ascribed to the acid–base properties of catalysts with different exposure facets. That is, the dehydration was favored by the acidic bulk γ-Mo2N with a preferential exposure facet of (111), whereas the dehydrogenation was benefited from the strong basic property of the NC-supported γ-Mo2N catalyst with the favorable exposed plane of (200).
中文翻译：
甲酸的全谱分解过γ-沫2 N系催化剂：从脱水到脱氢
甲酸（FA）可以分别通过选择性脱水和脱氢视为CO和H 2载体。尽管各种催化剂表现出对FA分解的选择性活性，但据报道没有活性相对两者同时有效。在这项工作中，FA分解在散装γ-沫2 N和氮掺杂碳（NC） -支持γ-沫2种Ñ催化剂进行了详细的调查。发现两种催化剂在低温（100–200°C）下均表现出明显的活性。有趣的是，反应途径几乎完全来自散装γ-沫选择性脱水转化2 N到在NC-支持γ-沫选择性脱氢2N.此外，在45小时的测试中，使用这两种催化剂观察到了稳定的FA分解性能。分解途径的明显转变可能归因于具有不同暴露面的催化剂的酸碱性质。即，脱水是由酸性散装γ-沫青睐2 n，其中（111）的优先曝光面，而脱氢从NC-支持γ-Mo的强碱性性能受益2 Ñ催化剂与有利（200）的暴露平面。
更新日期：2020-04-12
中文翻译：
甲酸的全谱分解过γ-沫2 N系催化剂：从脱水到脱氢
甲酸（FA）可以分别通过选择性脱水和脱氢视为CO和H 2载体。尽管各种催化剂表现出对FA分解的选择性活性，但据报道没有活性相对两者同时有效。在这项工作中，FA分解在散装γ-沫2 N和氮掺杂碳（NC） -支持γ-沫2种Ñ催化剂进行了详细的调查。发现两种催化剂在低温（100–200°C）下均表现出明显的活性。有趣的是，反应途径几乎完全来自散装γ-沫选择性脱水转化2 N到在NC-支持γ-沫选择性脱氢2N.此外，在45小时的测试中，使用这两种催化剂观察到了稳定的FA分解性能。分解途径的明显转变可能归因于具有不同暴露面的催化剂的酸碱性质。即，脱水是由酸性散装γ-沫青睐2 n，其中（111）的优先曝光面，而脱氢从NC-支持γ-Mo的强碱性性能受益2 Ñ催化剂与有利（200）的暴露平面。
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