Direct Observation of the Active Center for Methane Dehydroaromatization Using an Ultrahigh Field 95Mo NMR Spectroscopy

Journal Article · Wed Mar 26 04:00:00 EDT 2008 · Journal of the American Chemical Society, 130(12):3722-3723

DOI:https://doi.org/10.1021/ja7110916· OSTI ID:926936

Zheng, Heng; Ma, Ding; Bao, Xinhe; Hu, Jian Zhi; Kwak, Ja Hun; Wang, Yong; Peden, Charles HF

Direct conversion of methane to value-added chemicals remains a challenge from both scientific and industrial points of view. In 1993, Wang et al. reported that methane can be transformed into aromatics on Mo/HZSM-5 catalysts under non-oxidative condition.1 Although remarkable progress has been made in the studies of the methane dehydroaromatization (MDA) reaction since that time, the reaction mechanism is still being debated,2 mainly due to the lack of understanding of the active center on Mo/HZSM-5 catalysts.3 It has been hypothesized that molybdenum may migrate into zeolitic channels and anchor on Brönsted acid sites during the synthesis. However, it is unclear whether the active molybdenum species are small crystallites or isolated exchanged species.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 926936
• Report Number(s): PNNL-SA-57408; 19799; 19795; KC0302010
• Journal Information: Journal of the American Chemical Society, 130(12):3722-3723, Journal Name: Journal of the American Chemical Society, 130(12):3722-3723
• Country of Publication: United States
• Language: English

Related Subjects

Environmental Molecular Sciences Laboratory