標題: Photocatalytic uphill conversion of natural gas beyond the limitation of thermal reaction systems
作者: Shoji, Shusaku
Peng, Xiaobo
Yamaguchi, Akira
Watanabe, Ryo
Fukuhara, Choji
Cho, Yohei
Yamamoto, Tomokazu
Matsumura, Syo
Yu, Min-Wen
Ishii, Satoshi
Fujita, Takeshi
Abe, Hideki
Miyauchi, Masahiro
交大名義發表
National Chiao Tung University
公開日期: 1-Jan-1970
摘要: Dry reforming of methane is one of the key reactions to exploit natural gas feedstocks by their catalytic conversion to synthesis gas (CH4 + CO2 -> 2H(2) + 2CO), which is used in the production of transportable liquid fuel. However, this reaction suffers from thermodynamic conversion limits and high thermal energy requirements. Herein we report that a SrTiO3-supported rhodium (Rh/STO) catalyst efficiently promotes methane reforming under ultraviolet light irradiation without heat supply at low temperatures, which cannot be achieved by conventional thermal catalysis. The photoexcited holes and electrons are used for CH4 oxidation over STO and CO2 reduction over rhodium, respectively. Isotope analysis clarified that the lattice oxygens (O2-) act as mediator to drive dry reforming of methane. The materials design of Rh/STO can be extended in principle to diverse uphill reactions that utilize photon energy to obtain valued products from different carbon resources.
URI: http://dx.doi.org/10.1038/s41929-019-0419-z
http://hdl.handle.net/11536/153773
ISSN: 2520-1158
DOI: 10.1038/s41929-019-0419-z
期刊: NATURE CATALYSIS
起始頁: 0
結束頁: 0
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