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

Abstract

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.

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

Citation Formats

Zheng, Heng, Ma, Ding, Bao, Xinhe, Hu, Jian Zhi, Kwak, Ja Hun, Wang, Yong, and Peden, Charles HF. Direct Observation of the Active Center for Methane Dehydroaromatization Using an Ultrahigh Field 95Mo NMR Spectroscopy. United States: N. p., 2008. Web. doi:10.1021/ja7110916.
Zheng, Heng, Ma, Ding, Bao, Xinhe, Hu, Jian Zhi, Kwak, Ja Hun, Wang, Yong, & Peden, Charles HF. Direct Observation of the Active Center for Methane Dehydroaromatization Using an Ultrahigh Field 95Mo NMR Spectroscopy. United States. doi:10.1021/ja7110916.
Zheng, Heng, Ma, Ding, Bao, Xinhe, Hu, Jian Zhi, Kwak, Ja Hun, Wang, Yong, and Peden, Charles HF. Wed . "Direct Observation of the Active Center for Methane Dehydroaromatization Using an Ultrahigh Field 95Mo NMR Spectroscopy". United States. doi:10.1021/ja7110916.
@article{osti_926936,
title = {Direct Observation of the Active Center for Methane Dehydroaromatization Using an Ultrahigh Field 95Mo NMR Spectroscopy},
author = {Zheng, Heng and Ma, Ding and Bao, Xinhe and Hu, Jian Zhi and Kwak, Ja Hun and Wang, Yong and Peden, Charles HF},
abstractNote = {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.},
doi = {10.1021/ja7110916},
journal = {Journal of the American Chemical Society, 130(12):3722-3723},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {3}
}