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Insights on hydrogen spillover on carbonaceous supports
Nanoscale ( IF 5.8 ) Pub Date : 2022-06-07 , DOI: 10.1039/d2nr02067j Adi M Moyal 1 , Ofra Paz-Tal 1 , Eyal Ben-Yehuda 1 , Pietro Moretto 2 , Marek Bielewski 2 , Emilio Napolitano 2 , Michael Gozin 3, 4, 5 , Svetlana Pevzner 1
Nanoscale ( IF 5.8 ) Pub Date : 2022-06-07 , DOI: 10.1039/d2nr02067j Adi M Moyal 1 , Ofra Paz-Tal 1 , Eyal Ben-Yehuda 1 , Pietro Moretto 2 , Marek Bielewski 2 , Emilio Napolitano 2 , Michael Gozin 3, 4, 5 , Svetlana Pevzner 1
Affiliation
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Hydrogen spillover is important in solid-phase catalytic hydrogenation reactions, as well as in hydrogen storage and scavenging. The present study explores the nature of this phenomenon by examining the effects of hydrogen pressure and addition of carbonaceous additives, such as carbon nanotubes (CNT) and C60 fullerene, on hydrogenation reaction kinetics and its products distribution. For these purposes, a solid-phase hydrogenation reaction was studied, where 1,4-bis-(phenyl-ethynyl)benzene (PEB) was used as a hydrogen acceptor. To the best of our knowledge, this is the first study in which both the reaction kinetics and products distribution of the solid-phase organic hydrogen acceptor were analyzed. A demonstration of hydrogen spillover phenomenon was provided on the basis of the combined interpretation of kinetics and hydrogenated organic products distribution, under different reaction conditions. The results were explained in terms of hydrogen active species availability, distribution and relative migration distance of these species through the carbonaceous media. The insights into the hydrogen spillover chemistry obtained in this research allow for a better understanding of this phenomenon and its implementation in the future hydrogen storage and transportation, and hydrogen-generating devices, including safety aspects of all these applications.
中文翻译：
关于碳质载体上氢溢出的见解
氢溢出在固相催化加氢反应以及储氢和清除中很重要。本研究通过检查氢气压力和添加碳质添加剂（如碳纳米管 (CNT) 和 C 60 ）的影响来探索这种现象的性质富勒烯，关于加氢反应动力学及其产物分布。为此目的，研究了固相氢化反应，其中 1,4-双-(苯基-乙炔基)苯 (PEB) 用作氢受体。据我们所知，这是第一项分析固相有机氢受体的反应动力学和产物分布的研究。在对不同反应条件下的动力学和氢化有机产物分布进行综合解释的基础上，对氢溢出现象进行了论证。结果解释了氢活性物质的可用性、分布和这些物质通过碳质介质的相对迁移距离。
更新日期：2022-06-07
中文翻译：
关于碳质载体上氢溢出的见解
氢溢出在固相催化加氢反应以及储氢和清除中很重要。本研究通过检查氢气压力和添加碳质添加剂（如碳纳米管 (CNT) 和 C 60 ）的影响来探索这种现象的性质富勒烯，关于加氢反应动力学及其产物分布。为此目的，研究了固相氢化反应，其中 1,4-双-(苯基-乙炔基)苯 (PEB) 用作氢受体。据我们所知，这是第一项分析固相有机氢受体的反应动力学和产物分布的研究。在对不同反应条件下的动力学和氢化有机产物分布进行综合解释的基础上，对氢溢出现象进行了论证。结果解释了氢活性物质的可用性、分布和这些物质通过碳质介质的相对迁移距离。
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