产生高价值化合物的最重要的能源之一是甲烷，这是页岩气，天然气和易燃冰的主要成分。由于甲烷分子的巨大对称性和差的极化性，在良性情况下仍然很难刺激甲烷。
图片来源：高简单/shutterstock.com
Over extremely thin two-dimensional (2D) Ru nanosheets with lattice-confined Cu atoms, a research team headed by Professor Dehui Deng and Associate Professor Liang Yu from theDalian Institute of Chemical Physics(DICP) of the Chinese Academy of Sciences (CAS) successfully obtained extremely effective room-temperature methane transformation to liquid C1 oxygenates.
On August 24th，2022年，这项研究出现在Chem Catalysis.
Ultrathin 2D metallic nanosheets are potential matrix materials for enclosing heteroatoms in the lattice to provide active centers for methane activation. However, building efficient active sites for methane activation is difficult due to the controllable tailoring of the coordination environment for the restricted heteroatoms in the 2D nanosheets.
In this work, the scientists created the catalysts by squeezing Cu atoms into incredibly thin 2D metallic Ru nanosheets using a novel method of noble metal-induced reduction mechanism. This allowed for an extremely selective transformation of methane to liquid C1 oxygenates at ambient temperature.
They were able to produce liquid C1 oxygenates by precisely altering the concentration of the confined Cu atoms to enhance their coordination environment (CH3哦，ch3哦）在ru上11CU催化剂至1533 mmol G的极端-1Cu(surf.)h-1使用H具有超过99％的选择性2O2作为氧化剂。
Multiple spectroscopic analyses and first-principles measurements indicate that the bi-coordinated bridge-site oxygen species produced on the Ru edge-confined Cu sites could easily break the methane C-H bond with a relatively low energy difference, allowing the methane to be converted at room temperature using a free radical process.
这项研究提供了一种设计有效催化剂的策略.
Dehui Deng, Study Lead and Professor, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
中国国家自然科学基金会，CAS边境科学的关欧洲杯线上买球键研究计划和中国博士后科学基金会都为上述研究提供了资金。
Journal Reference:
Fan，J。，等. (2022) Boosting room-temperature conversion of methane via confining Cu atoms in ultrathin Ru nanosheets.Chem Catalysis.doi.org/10.1016/j.checat.2022.07.025.
来源：http://english.dicp.cas.cn/