Silica-Confined Two-Atom Single-Cluster Catalyst for Direct Nonoxidative Conversion of Methane: A DFT Study

2021 ◽  
Author(s):  
Han-Xuan Liu ◽  
Tao Ban ◽  
Xi-Yang Yu ◽  
Zheng-Qing Huang ◽  
Chun-Ran Chang
Keyword(s):  
Dft Study ◽  
Conversion Of Methane ◽  
Nonoxidative Conversion ◽  
Single Cluster

XPS AND FTIR STUDIES OF Mo/ZSM-5 CATALYSTS FOR NONOXIDATIVE CONVERSION OF METHANE TO AROMATICS

2001 ◽  
Vol 08 (06) ◽  
pp. 627-632 ◽  
Author(s):  
H. Y. CHEN ◽  
S. TANG ◽  
Z. Y. ZHONG ◽  
J. LIN ◽  
K. L. TAN
Keyword(s):  
Methane Conversion ◽  
Active Sites ◽  
Reaction Times ◽  
Initial Reaction ◽  
Oxygen Treatment ◽  
Conversion Of Methane ◽  
Xps Study ◽  
Nonoxidative Conversion ◽  
First Time

In this investigation, several Mo/ZSM-5 catalysts with various Mo loadings and various reaction times were prepared, and methane conversion to aromatics without the presence of oxygen was studied by microreactor evaluation, FTIR and XPS. It was found, for the first time, that oxygen treatment before the reaction could shorten the induction period of this reaction. In situ FTIR study indicated the formation of [Formula: see text] species ( 888 cm -1) and O–Al ( 670 cm -1) on the surface of the catalyst as a result of the oxygen treatment. The two IR bands shifted to 854 and 659 cm -1 respectively when 18 O 2 was used. These oxygen species may take part in the initial reaction and shorten the induction time. The XPS study revealed the coexistence of Mo 2 C and MoO 3 species on working catalyst surfaces, and a proper Mo 2 C/MoO 3 ratio (~0.38) was identified for the best aromatization Mo/ZSM-5 catalyst. The active sites for methane conversion to aromatics should include Mo oxide as well as Mo carbide.

Nonoxidative Conversion of Methane, Ethane, and Ethylene on Flat Ir(111) and Stepped Ir(211) Surfaces

2021 ◽  
Vol 125 (10) ◽  
pp. 5602-5615
Author(s):  
Chunli Liu ◽  
Xiaodong Wen ◽  
Yong Yang ◽  
Yong-Wang Li ◽  
Haijun Jiao
Keyword(s):  
Conversion Of Methane ◽  
Nonoxidative Conversion

Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen

Science ◽  
2014 ◽  
Vol 344 (6184) ◽  
pp. 616-619 ◽  
Author(s):  
X. Guo ◽  
G. Fang ◽  
G. Li ◽  
H. Ma ◽  
H. Fan ◽  
...  
Keyword(s):  
Conversion Of Methane ◽  
Nonoxidative Conversion

Cooperative Catalysis by Multiple Active Centers in Nonoxidative Conversion of Methane

2020 ◽  
Vol 124 (25) ◽  
pp. 13656-13663 ◽  
Author(s):  
Teng-Hao Li ◽  
Ming Yan ◽  
Yuan Liu ◽  
Zheng-Qing Huang ◽  
Chun-Ran Chang ◽  
...  
Keyword(s):  
Active Centers ◽  
Cooperative Catalysis ◽  
Conversion Of Methane ◽  
Nonoxidative Conversion

Nonoxidative conversion of methane and n-pentane over a platinum/alumina catalyst

2016 ◽  
Vol 57 (4) ◽  
pp. 504-510 ◽  
Author(s):  
D. V. Golinskii ◽  
N. V. Vinichenko ◽  
V. V. Pashkov ◽  
I. E. Udras ◽  
O. V. Krol’ ◽  
...  
Keyword(s):  
Alumina Catalyst ◽  
Conversion Of Methane ◽  
Nonoxidative Conversion

Unravelling the Enigma of Nonoxidative Conversion of Methane on Iron Single‐Atom Catalysts

2020 ◽  
Vol 59 (42) ◽  
pp. 18586-18590
Author(s):  
Yuan Liu ◽  
Jin‐Cheng Liu ◽  
Teng‐Hao Li ◽  
Zeng‐Hui Duan ◽  
Tian‐Yu Zhang ◽  
...  
Keyword(s):  
Single Atom ◽  
Conversion Of Methane ◽  
Nonoxidative Conversion
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