Formation of Active Phase of the Catalyst for the Reaction of Methane Aromatization

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (9): 1535.

• Articles • Previous Articles Next Articles

Formation of Active Phase of the Catalyst for the Reaction of Methane Aromatization

MA Ding, SU Ling-Ling, SHU Yu-Ying, XU Yi-De, BAO Xin-He

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China

Received:2000-07-05 Online:2001-09-24 Published:2001-09-24

Abstract

Abstract: The behavior of different species during the temperature programmed surface reaction (TPSR) of methane over various catalysts is traced by an on line mass spectrometer. It is demonstrated that the transformation of MoO₃ to molybdenum carbide hinders the activation of methane as well as the succeeding aromatization in the TPSR. If this transformation process is done before the reaction, the temperature needed for methane activation and benzene formation will be greatly lowered(760 Kand 847 K, respectively). It is strongly suggested that molybdenum carbide is one of the active center of this catalytic process.

Key words: Methane aromatization, Induction period, Molybdenum carbide, MCM₂₂, ZSM₅, TPSR

CLC Number:

O643

TrendMD:

MA Ding, SU Ling-Ling, SHU Yu-Ying, XU Yi-De, BAO Xin-He . Formation of Active Phase of the Catalyst for the Reaction of Methane Aromatization[J]. Chem. J. Chinese Universities, 2001, 22(9): 1535.

[1]	CHENG Jin-Min, HUANG Wei*, ZUO Zhi-Jun. Effect of Carburization Temperature on the Preparation and the Catalytic Performance of Molybdenum Carbide in the Dry-methane Reforming(DMR) [J]. Chem. J. Chinese Universities, 2010, 31(1): 130.
[2]	JIN Guang-Zhou¹*, Fan Xiu-Ju¹, SUN Gui-Da¹, GAO Jun-Bin¹ , ZHU Jian-Hua². Effect of Co Doping on the Cartalytic Performace of Molybdenum Carbide for Thiophene Hydrodesulfurization [J]. Chem. J. Chinese Universities, 2007, 28(6): 1169.
[3]	MA Zhong-Yi, YANG Cheng, DONG Qing-Nian, WEI Wei, CHEN Jian-Gang, LI Wen-Huai, SUN Yu-Han . Adsorption and Reaction Behavior over Co Catalysts Supported by Different Zirconia Polymorphs [J]. Chem. J. Chinese Universities, 2005, 26(5): 902.
[4]	LIU Hong-Mei, LI Tao, XU Yi-De. Chemical Characteristics of Coke on Mo/HZSM-5 Catalysts for Methane Dehydroaromatization Under Nonoxidative Conditions by TP Techniques [J]. Chem. J. Chinese Universities, 2002, 23(8): 1556.
[5]	LI Shuang, ZHANG Chun-Lei, YUAN Yi, WU Tong-Hao, XU Zhu-Sheng, LIN Li-Wu  . Methane Aromatization in the Absence of Oxygen over the Fourth Period Transitional Metal Ion Exchanged H-ZSM-5 Catalysts [J]. Chem. J. Chinese Universities, 1998, 19(6): 964.
[6]	LI Shuang, ZHANG Chun-Lei, YUAN Yi, PENG Yan-Bing, WU Tong-Hao, ZHANG Mi-Lin, LIN Li-Wu. Effects of Zeolite Structure on the Catalytic Performance of Catalysts for Methane Non-oxidative Aromatization [J]. Chem. J. Chinese Universities, 1998, 19(12): 2005.
[7]	ZHOU Ren-Xian, XU Xiao-Ling, ZHENG Xiao-Ming. Effect of CeO₂ on Oxidation of CO over Pd/Al₂O₃ Catalyst [J]. Chem. J. Chinese Universities, 1996, 17(3): 443.
[8]	XIA Qing-Hua, GAO Zi. Investigaions on TPSR-TPD of H₂O₂,O₂and Allyl Chloride Species Adsorbed on Ti-Si Zeolites [J]. Chem. J. Chinese Universities, 1995, 16(12): 1926.
[9]	Wang Zi-chen, Zhang Li-hua, Yang Yong-hua, Zhao Mu-yu . Studies on the Characteristics of Metastable Zone of the Aqueous K₂SO₄Solution (Ⅲ)--The Induction Period of Nucleation [J]. Chem. J. Chinese Universities, 1991, 12(2): 259.

Formation of Active Phase of the Catalyst for the Reaction of Methane Aromatization

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 9

Recommended Articles

Metrics

Comments