Catalytic Conversion of Methane to Methanol Using Cu-Zeolites

被引:20
作者
Alayon, Evalyn Mae C. [1 ]
Nachtegaal, Maarten [1 ]
Ranocchiari, Marco [1 ]
van Bokhoven, Jeroen A. [1 ]
机构
[1] Swiss Fed Inst Technol, Inst Chem & Bioengn, CH-8093 Zurich, Switzerland
关键词
Cu-zeolites; Methane; Methanol; Partial oxidation; X-ray absorption spectroscopy; ION-EXCHANGED ZSM-5; LOW-TEMPERATURE OXIDATION; HIGHLY-ACTIVE CATALYSTS; CU-ZSM-5; CATALYSTS; METHANESULFONIC-ACID; SELECTIVE OXIDATION; N2O DECOMPOSITION; NITROGEN MONOXIDE; FEZSM-5; ZEOLITE; AQUEOUS-MEDIUM;
D O I
10.2533/chimia.2012.668
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The conversion of methane to value-added liquid chemicals is a promising answer to the imminent demand for fuels. and chemical synthesis materials in the advent of a dwindling petroleum supply. Current technology requires high energy input for the synthesis gas production, and is characterized by low overall selectivity, which calls for alternative reaction routes. The limitation to achieve high selectivity is the high C-H bond strength of methane. High-temperature reaction systems favor gas-phase radical reactions and total oxidation. This suggests that the catalysts for methane activation should be active at low temperatures. The enzymatic-inspired metal-exchanged zeolite systems apparently fulfill this need, however, methanol yield is low and a catalytic process cannot yet be established. Homogeneous and heterogeneous catalytic systems have been described which stabilize the intermediate formed after the first C-H activation. The understanding of the reaction mechanism and the determination of the active metal sites are important for formulating strategies for the upgrade of methane conversion catalytic technologies.
引用
收藏
页码:668 / 674
页数:7
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