Scholarlink

<p>The non-oxidative dehydrogenation of light alkanes to alkenes is thermodynamically limited by the trade-off between the cleavage of C-H and C-C bonds. Unlocking the thermodynamic bottleneck with photocatalysis is prone to eliminate undesirable side reactions such as deep dehydrogenation, cracking, isomerization, and polymerization. Herein, we show the photocatalytic non-oxidative dehydrogenation of ethane to ethene and hydrogen at ambient conditions, which is enabled by grafting of Ni single atoms to modulate the surface electronic structure of Pd nanoparticles photo-deposited on the surface of anatase TiO<sub>2</sub> nanoparticles, modifying the ethane dehydrogenation pathway. A high rate of 8.2 ± 0.2 mmol·g<sup>−1</sup>·h<sup>−1</sup> for the stoichiometric conversion of ethane to ethene and hydrogen is achieved with a 100% ethene selectivity in a flow reactor under solar light irradiation. The apparent quantum efficiency reaches ~22.3% at 350 nm by using the optimal T-Ni<sub>0.6</sub>Pd<sub>0.24</sub> photocatalyst. Solar-driven non-oxidative alkane dehydrogenation offers a route to light alkenes with high performance, and selectivity.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Photocatalytic non-oxidative dehydrogenation of ethane to ethene with near unit selectivity

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年10月23日

查看全文
  • Xiaoyu Sui,
  • Jiwu Zhao,
  • Pu Zhang,
  • Ying Wang,
  • Hangbin Zheng,
  • Haihua Zeng,
  • Pengzhao Wang,
  • Yanyan Jia,
  • Na Wen,
  • Zhengxin Ding,
  • Zizhong Zhang,
  • Sheng Dai,
  • Chao Xu,
  • Rusheng Yuan,
  • Wenxin Dai,
  • Xianzhi Fu,
  • Jinlin Long

摘要

The non-oxidative dehydrogenation of light alkanes to alkenes is thermodynamically limited by the trade-off between the cleavage of C-H and C-C bonds. Unlocking the thermodynamic bottleneck with photocatalysis is prone to eliminate undesirable side reactions such as deep dehydrogenation, cracking, isomerization, and polymerization. Herein, we show the photocatalytic non-oxidative dehydrogenation of ethane to ethene and hydrogen at ambient conditions, which is enabled by grafting of Ni single atoms to modulate the surface electronic structure of Pd nanoparticles photo-deposited on the surface of anatase TiO2 nanoparticles, modifying the ethane dehydrogenation pathway. A high rate of 8.2 ± 0.2 mmol·g−1·h−1 for the stoichiometric conversion of ethane to ethene and hydrogen is achieved with a 100% ethene selectivity in a flow reactor under solar light irradiation. The apparent quantum efficiency reaches ~22.3% at 350 nm by using the optimal T-Ni0.6Pd0.24 photocatalyst. Solar-driven non-oxidative alkane dehydrogenation offers a route to light alkenes with high performance, and selectivity.