通过负载在ZSM-5和丝光沸石上的双（μ-氧）二铜核实现甲烷的选择性氧化。

Selective oxidation of methane by the bis(mu-oxo)dicopper core stabilized on ZSM-5 and mordenite zeolites.

作者信息

Groothaert Marijke H, Smeets Pieter J, Sels Bert F, Jacobs Pierre A, Schoonheydt Robert A

机构信息

Center for Surface Chemistry and Catalysis, K. U. Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium.

出版信息

J Am Chem Soc. 2005 Feb 9;127(5):1394-5. doi: 10.1021/ja047158u.

DOI:10.1021/ja047158u

PMID:15686370

Abstract

This work reports on the capability of the O2-activated Cu-ZSM-5 and Cu-MOR zeolites to selectively convert methane into methanol at a temperature of 398 K. A strong correlation between (i) the activity and (ii) the intensity of the 22 700 cm-1 UV-vis band, assigned to the bis(mu-oxo)dicopper core, is found (i) as a function of the reaction temperature, (ii) as a function of the Cu loading of the zeolite, and (iii) in comparison to other Cu materials. These three lines of evidence firmly support the key role of the bis(mu-oxo)dicopper core in this selective, low-temperature hydroxylation of methane.

摘要

这项工作报道了O₂活化的Cu-ZSM-5和Cu-MOR沸石在398K温度下将甲烷选择性转化为甲醇的能力。发现（i）活性与（ii）归属于双（μ-氧）二铜核的22700cm⁻¹紫外可见吸收带强度之间存在强相关性，（i）作为反应温度的函数，（ii）作为沸石中铜负载量的函数，以及（iii）与其他铜材料相比。这三条证据有力地支持了双（μ-氧）二铜核在这种甲烷选择性低温羟基化反应中的关键作用。