Catalytic Decomposition of Methane: Effect of Various Factors on Catalytic Properties

2007 ◽  
pp. 23-26
Author(s):  
Hyun Chang Shin ◽  
Hyun Jung Kim ◽  
Dong Shin Yun ◽  
Jung Whan Yoo ◽  
Dong Jin Lee ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Catalytic Decomposition ◽  
Decomposition Of Methane

Catalytic Decomposition of Methane: Effect of Various Factors on Catalytic Properties

2007 ◽  
Vol 544-545 ◽  
pp. 23-26 ◽  
Author(s):  
Hyun Chang Shin ◽  
Hyun Jung Kim ◽  
Dong Shin Yun ◽  
Jung Whan Yoo ◽  
Dong Jin Lee ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Reaction Temperature ◽  
Methane Conversion ◽  
Catalytic Properties ◽  
Catalytic Decomposition ◽  
Good Catalytic Activity ◽  
Decomposition Of Methane ◽  
Mesoporous Supports ◽  
Mcm 41

The effect of various reaction factors such as amount of Ni loaded, temperature, and variety of supports on the methane conversion were investigated to obtain higher methane conversion. The high activities were observed over Ni(10 wt%)/SiO2 catalyst and at 650oC of reaction temperature. Catalysts using mesoporous supports such as SiO2 and MCM-41 showed good catalytic activity and stability.

Catalytic decomposition of methane over rare earth metal (Ce and La) oxides supported iron catalysts

2019 ◽  
Vol 467-468 ◽  
pp. 236-248 ◽  
Author(s):  
Manoj Pudukudy ◽  
Zahira Yaakob ◽  
Qingming Jia ◽  
Mohd Sobri Takriff
Keyword(s):  
Rare Earth ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Catalytic Decomposition ◽  
Iron Catalysts ◽  
Decomposition Of Methane ◽  
Supported Iron

scholarly journals Production of COx-Free Hydrogen and Few-Layer Graphene Nanoplatelets by Catalytic Decomposition of Methane over Ni-Lignin-Derived Nanoparticles

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 503
Author(s):  
Qiangu Yan ◽  
Timothy Ketelboeter ◽  
Zhiyong Cai
Keyword(s):  
Active Sites ◽  
Nickel Nanoparticles ◽  
Catalytic Decomposition ◽  
Graphene Nanoplatelets ◽  
Methane Decomposition ◽  
High Catalytic Activity ◽  
Layer Graphene ◽  
Free Hydrogen ◽  
Decomposition Of Methane ◽  
Few Layer Graphene

Nickel (Ni)-lignin nanocomposites were synthesized from nickel nitrate and kraft lignin then catalytically graphitized to few-layer graphene-encapsulated nickel nanoparticles (Ni@G). Ni@G nanoparticles were used for catalytic decomposition of methane (CDM) to produce COx-free hydrogen and graphene nanoplatelets. Ni@G showed high catalytic activity for methane decomposition at temperatures of 800 to 900 °C and exhibited long-term stability of 600 min time-on-stream (TOS) without apparent deactivation. The catalytic stability may be attributed to the nickel dispersion in the Ni@G sample. During the CDM reaction process, graphene shells over Ni@G nanoparticles were cracked and peeled off the nickel cores at high temperature. Both the exposed nickel nanoparticles and the cracked graphene shells may participate the CDM reaction, making Ni@G samples highly active for CDM reaction. The vacancy defects and edges in the cracked graphene shells serve as the active sites for methane decomposition. The edges are continuously regenerated by methane molecules through CDM reaction.

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