Department of Chemical and Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118, United States.
J Am Chem Soc. 2020 Jul 15;142(28):11962-11966. doi: 10.1021/jacs.0c03283. Epub 2020 Jul 3.
Direct oxidation of methane to methanol is a long-standing challenge in the heterogeneous catalysis community. This Communication demonstrates that water, not dioxygen, is the main source of the oxygen present in the methanol produced in the partial oxidation of methane to methanol over Cu-SSZ-13 in a continuous-flow reactor. This is confirmed by experiments performed in the absence of molecular oxygen and with the use of O-labeled water. These findings should lead to new approaches for improving the partial oxidation properties of copper zeolites.
甲烷直接氧化制甲醇是多相催化领域长期存在的挑战。本通讯表明，在连续流反应器中，Cu-SSZ-13 催化甲烷部分氧化制甲醇时，水中的氧而非氧气是生成甲醇中氧的主要来源。这一结论通过在无氧条件下和使用 O 标记水进行的实验得到了证实。这些发现将为改进铜分子筛的部分氧化性能提供新的思路。
