Journal of Energy Chemistry
ISSN 1003-9953
     
Journal of Natural Gas 2004, Vol. 13 Issue (3) :148-159    DOI:
Articles Current Issue | Next Issue | Archive | Adv Search << Previous Articles | Next Articles >>
Improved Performance of W/HZSM-5 Catalysts for Dehydroaromatization of Methane
Nor Aishah Saidina Amin, Kusmiyati

Download: PDF (469KB)   HTML (0KB)   Export: BibTeX or EndNote (RIS)      Supporting Info
Abstract Abstract: The dehydroaramatization of methane over W-supported ZSM-5 with varying degrees of Li+ ion-exchanged catalysts was studied with and without oxygen at 1073 K and atmospheric pressure. Catalyst activity and stability were found to be influenced by the catalyst acidity related to Bronsted acid sites and by the presence of oxygen in the feed. The NH3-TPD and FTIR-pyridine results demonstrated that partially exchanged of H+ ions by Li+ into the W/HZSM-5 catalysts could be used to control the amount of strong acid sites on the catalyst surface. Without oxygen, the 3WHLi-Z (5:1) catalyst that has strong acid sites equal to nearly 74% of the original strong acid sites in the parent HZSM-5 exhibited the highest methane conversion and selectivity towards amatics. However, the catalyst deactivated in a five hour period. In the presence of oxygen, the catalyst activity and stability could be improved further. The results of this study revealed that a suitable amount of strong Bronsted acid sites as well as oxygen addition in the feed increased the catalyst activity and stability. The 3WHLi-Z(5:1) catalyst exhibited improved performance in the dehydroaromatization of methane.
Service
Email this article
Add to my bookshelf
Add to citation manager
Email Alert
RSS
Articles by authors
Nor Aishah Saidina Amin
Kusmiyati
Keywordsdehydroaromatization   methane   W-supported ZSM-5   partial ion exchange   H+ ion   Li ion   catalyst activity   catalyst stability   catalyst acidity   oxygen presence     
published: 2004-09-30
Cite this article:   
Nor Aishah Saidina Amin, Kusmiyati .Improved Performance of W/HZSM-5 Catalysts for Dehydroaromatization of Methane[J]  Journal of Natural Gas , 2004,V13 (3): 148-159
URL:  
http://www.jenergchem.org/EN/     或     http://www.jenergchem.org/EN/Y2004/V13 /I3/148
 
No references of article
[1] Fengju Bian, Zhongru Zhang, Yong Yang.Enhanced high temperature cycling performance of LiMn2O4/graphite cells with methylene methanedisulfonate (MMDS) as electrolyte additive and its acting mechanism[J]. Journal of Energy Chemistry, 2014,23(3): 383-390
[2] Wenping Zhao, Baozhu Zhang, Guiru Wang, Hongchen Guo.Methane formation route in the conversion of methanol to hydrocarbons[J]. Journal of Energy Chemistry, 2014,23(2): 201-206
[3] Yanna Liu, Song Xiao, Pu Bai, Haoquan Hu, Lijun Jin.Adsorption separation performance of H2/CH4 on ETS-4 by concentration pulse chromatography[J]. Journal of Energy Chemistry, 2014,23(2): 213-220
[4] Changlin Yu, Jiubiao Hu, Wanqin Zhou, Qizhe Fan.Novel Ni/CeO2-Al2O3 composite catalysts synthesized by one-step citric acid complex and their performance in catalytic partial oxidation of methane[J]. Journal of Energy Chemistry, 2014,23(2): 235-243
[5] Ronghe Lin, Yunjie Ding, Runqin Wang.Comparative study on stability and coke deposition over supported Rh and FePO4 catalysts for oxy-bromination of methane[J]. Journal of Energy Chemistry, 2014,23(1): 29-34
[6] Luming Zhang, Lin Li, Yuhua Zhang, Yanxi Zhao, Jinlin Li.Nickel catalysts supported on MgO with different specific surface area for carbon dioxide reforming of methane[J]. Journal of Energy Chemistry, 2014,23(1): 66-72
[7] Weisheng Wei, Tao Zhang, Jian Xu, Wei Du.Numerical study on soot removal in partial oxidation of methane to syngas reactors[J]. Journal of Energy Chemistry, 2014,23(1): 119-130
[8] Baowei Wang, Wenjuan Yan, Wenjie Ge, Xiaofei Duan.Methane conversion into higher hydrocarbons with dielectric barrier discharge micro-plasma reactor[J]. Journal of Energy Chemistry, 2013,22(6): 876-882
[9] Huali Long, Yan Xu, Xiaoqing Zhang, Shijing Hu, Shuyong Shang, Yongxiang Yin, Xiaoyan Dai.Ni-Co/Mg-Al catalyst derived from hydrotalcite-like compound prepared by plasma for dry reforming of methane[J]. Journal of Energy Chemistry, 2013,22(5): 733-739
[10] G. B. Aldashukurova, A. V. Mironenko, Z. A. Mansurov, N. V. Shikina, S. A. Yashnik, V. V. Kuznetsov, Z. R. Ismagilov.Synthesis gas production on glass cloth catalysts modified by Ni and Co oxides[J]. Journal of Energy Chemistry, 2013,22(5): 811-818
[11] Song Yun, Weizhong Qian, Chaojie Cui, Yuntao Yu, Chao Zheng, Yi Liu, Qiang Zhang, Fei Wei.Highly selective synthesis of single-walled carbon nanotubes from methane in a coupled Downer-turbulent fluidized-bed reactor[J]. Journal of Energy Chemistry, 2013,22(4): 567-572
[12] Sachchit Majhi, Pravakar Mohanty, Hui Wang, K. K. Pant.Direct conversion of natural gas to higher hydrocarbons: A review[J]. Journal of Energy Chemistry, 2013,22(4): 543-554
[13] Xiqiang Pan, Yibo Zhang, Zhenzhen Miao, Xiangguang Yang.A novel PdNi/Al2O3 catalyst prepared by galvanic deposition for low temperature methane combustion[J]. Journal of Energy Chemistry, 2013,22(4): 610-616
[14] Xiaoxi Peng, Jianqiang Zhu, Lu Yao, Changwei Hu.Effect of methane co-feeding on the selectivity of ethylene produced from oxidative dehydrogenation of ethane with CO2 over a Ni-La/SiO2 catalyst[J]. Journal of Energy Chemistry, 2013,22(4): 653-658
[15] Gaobo Zhang, Shuanshi Fan, Ben Hua, Yanhong Wang, Tianxu Huang, Yuhang Xie.Optimization strategy and procedure for coal bed methane separation[J]. Journal of Energy Chemistry, 2013,22(3): 533-541
Copyright 2010 by Journal of Energy Chemistry