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Title: Investigation on the light alkanes aromatization over Zn and Ga modified HZSM-5 catalysts in the presence of methane

Abstract

The catalytic co-aromatization of methane and paraffin-rich raffinate oil was investigated along with hexane, heptane and octane as its model compounds over zinc and gallium modified ZSM-5 zeolite catalysts. The benzene, toluene and xylene (BTX) components derived from light alkane aromatization were highly promoted with the assistance of methane. The co-existence of Zn and Ga metal species has a positive effect on the formation of BTX components, whereas the individual metal loaded catalyst resulted in the production of heavy aromatics, suggesting that zinc and gallium have a synergistic effect on the formation of BTX under the methane environment. When concerned with gaseous analysis, the introduced methane might interact with smaller intermediates and then transform into larger hydrocarbons. From the DRIFT observation, it was witnessed that the interaction between light alkane and methane occurred on the surface of the charged Zn-Ga/ZSM-5 catalyst. According to the comprehensive catalyst characterizations, the excellent catalytic performance may be closely associated with greatly dispersed metal species on the zeolite support, improved microporous characteristic, moderate Bronsted and increased Lewis acidic sites during the paraffin-rich liquid feedstock aromatization under methane environment. This research provides a promising pathway for the highly effective and profitable utilization of petrochemical resources andmore » natural gas.« less

Authors:
 [1];  [2];  [1];  [1];  [3];  [1];  [2]; ORCiD logo [1]
  1. Univ. of Calgary, AB (Canada)
  2. Shangdong Chambroad Petrochemicals Co. Ltd, Binzhou (China)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1429598
Report Number(s):
NREL/JA-5100-71180
Journal ID: ISSN 0016-2361
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Fuel
Additional Journal Information:
Journal Volume: 219; Journal Issue: C; Journal ID: ISSN 0016-2361
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; methane; co-aromatization; BTX; light alkane; ZSM-5

Citation Formats

Li, Qingyin, Zhang, Fengqi, Jarvis, Jack, He, Peng, Yung, Matthew M., Wang, Aiguo, Zhao, Kai, and Song, Hua. Investigation on the light alkanes aromatization over Zn and Ga modified HZSM-5 catalysts in the presence of methane. United States: N. p., 2018. Web. https://doi.org/10.1016/j.fuel.2018.01.104.
Li, Qingyin, Zhang, Fengqi, Jarvis, Jack, He, Peng, Yung, Matthew M., Wang, Aiguo, Zhao, Kai, & Song, Hua. Investigation on the light alkanes aromatization over Zn and Ga modified HZSM-5 catalysts in the presence of methane. United States. https://doi.org/10.1016/j.fuel.2018.01.104
Li, Qingyin, Zhang, Fengqi, Jarvis, Jack, He, Peng, Yung, Matthew M., Wang, Aiguo, Zhao, Kai, and Song, Hua. Fri . "Investigation on the light alkanes aromatization over Zn and Ga modified HZSM-5 catalysts in the presence of methane". United States. https://doi.org/10.1016/j.fuel.2018.01.104. https://www.osti.gov/servlets/purl/1429598.
@article{osti_1429598,
title = {Investigation on the light alkanes aromatization over Zn and Ga modified HZSM-5 catalysts in the presence of methane},
author = {Li, Qingyin and Zhang, Fengqi and Jarvis, Jack and He, Peng and Yung, Matthew M. and Wang, Aiguo and Zhao, Kai and Song, Hua},
abstractNote = {The catalytic co-aromatization of methane and paraffin-rich raffinate oil was investigated along with hexane, heptane and octane as its model compounds over zinc and gallium modified ZSM-5 zeolite catalysts. The benzene, toluene and xylene (BTX) components derived from light alkane aromatization were highly promoted with the assistance of methane. The co-existence of Zn and Ga metal species has a positive effect on the formation of BTX components, whereas the individual metal loaded catalyst resulted in the production of heavy aromatics, suggesting that zinc and gallium have a synergistic effect on the formation of BTX under the methane environment. When concerned with gaseous analysis, the introduced methane might interact with smaller intermediates and then transform into larger hydrocarbons. From the DRIFT observation, it was witnessed that the interaction between light alkane and methane occurred on the surface of the charged Zn-Ga/ZSM-5 catalyst. According to the comprehensive catalyst characterizations, the excellent catalytic performance may be closely associated with greatly dispersed metal species on the zeolite support, improved microporous characteristic, moderate Bronsted and increased Lewis acidic sites during the paraffin-rich liquid feedstock aromatization under methane environment. This research provides a promising pathway for the highly effective and profitable utilization of petrochemical resources and natural gas.},
doi = {10.1016/j.fuel.2018.01.104},
journal = {Fuel},
number = C,
volume = 219,
place = {United States},
year = {2018},
month = {3}
}

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Cited by: 11 works
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    Works referencing / citing this record:

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