Catalytic Decomposition of Methane into Hydrogen and High-Value Carbons: Combined Experimental and DFT Computational Study

2021 ◽  
Author(s):  
I-Wen Wang ◽  
Robert A Dagle ◽  
Tuhin Suvra Khan ◽  
Juan A. Lopez-Ruiz ◽  
Libor Kovarik ◽  
...  
Keyword(s):  
Co2 Emission ◽  
Computational Study ◽  
Catalytic Decomposition ◽  
Ni Catalysts ◽  
Decomposition Of Methane ◽  
Thermocatalytic Decomposition

Thermocatalytic decomposition (TCD) of methane can produce hydrogen and valuable nanocarbon co-products with low to near-zero CO2 emission. In this study, a series of Pd promoted Ni catalysts, prepared with...

Synthesis of Carbon Nanotubes by the Catalytic Decomposition of Methane

2006 ◽  
Vol 48 ◽  
pp. 67-72 ◽  
Author(s):  
Masashi Inoue ◽  
Kouta Asai ◽  
Yoshiyuki Nagayasu ◽  
Koji Takane ◽  
Eriko Yagasaki
Keyword(s):  
Carbon Nanotubes ◽  
Catalyst Support ◽  
Catalytic Decomposition ◽  
Ni Catalyst ◽  
High Carbon ◽  
Carbon Yield ◽  
Ni Catalysts ◽  
Chemical Potentials ◽  
Decomposition Of Methane ◽  
Synthesis Of Carbon Nanotubes

The influence of morphology of the support particles upon the nickel-catalyzed decomposition of methane into carbon nanotubes and hydrogen was explored using a thermogravimetric apparatus. High carbon nanotube yield was attained by the Ni catalysts supported on the glycothermally synthesized ZrO2 and Er3Ga5O12 particles, which had spherical shapes. Quite high carbon yield was also obtained by the Ni catalyst supported on spherical Al2O3 particles (Nanophase Tech. Corp.). It was concluded that the most important factor governing the carbon yield is the morphology of the catalyst support, which contributes to the internal pressure of carbon nanotubes thus determining their chemical potentials.

Catalytic decomposition of methane over supported Ni catalysts with different particle sizes

2009 ◽  
Vol 4 (5) ◽  
pp. 814-820 ◽  
Author(s):  
Sun Yunfei ◽  
Sui Zhijun ◽  
Zhou Jinghong ◽  
Li Ping ◽  
Zhou Xinggui ◽  
...  
Keyword(s):  
Catalytic Decomposition ◽  
Particle Sizes ◽  
Ni Catalysts ◽  
Decomposition Of Methane ◽  
Supported Ni Catalysts ◽  
Supported Ni

Catalytic decomposition of methane over cerium-doped Ni Catalysts

2005 ◽  
Vol 885 ◽  
Author(s):  
Oscar A. González ◽  
Miguel A. Valenzuela ◽  
Jin-An Wang
Keyword(s):  
Cetyltrimethylammonium Bromide ◽  
Catalytic Decomposition ◽  
Gaseous Product ◽  
Tetraethyl Orthosilicate ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Ni Catalysts ◽  
X Ray ◽  
Decomposition Of Methane ◽  
Temperature Programmed

ABSTRACTSi-Ce-O mixed solids (50, 30, 10 and 5, Si/Ce molar ratio) were prepared by using Ce(NO3)3·6H2O as cerium source, tetraethyl orthosilicate (TEOS) as Si precursor and cetyltrimethylammonium bromide (CTABr) as synthesis template. The Ni catalysts were prepared by impregnation of the supports using Ni-acetilacetonate (30 wt.% Ni) as Ni source. The samples were characterized by: X-ray diffraction, temperature-programmed reduction (TPR), and TEM. The nickel reduction degree decreased with the addition of cerium, even in low concentration. When methane was decomposed over all the catalysts only hydrogen was obtained as a gaseous product. The addition of cerium brought about a significant increase in stability compared with Ni/SiO2 catalyst. These preliminary results indicated that CeO2 addition improves the dispersion of Ni particles leading to a better distribution of deposited carbon and increasing the lifetime of Ni particles.

scholarly journals Carbons Formed in Methane Thermal and Thermocatalytic Decomposition Processes: Properties and Applications

2021 ◽  
Vol 7 (3) ◽  
pp. 50
Author(s):  
Emmi Välimäki ◽  
Lasse Yli-Varo ◽  
Henrik Romar ◽  
Ulla Lassi
Keyword(s):  
Thermal Decomposition ◽  
Hydrogen Production ◽  
Energy Systems ◽  
Hydrogen Gas ◽  
Solid Carbon ◽  
Hydrogen Economy ◽  
Decomposition Processes ◽  
Different Types ◽  
Decomposition Of Methane ◽  
Thermocatalytic Decomposition

The hydrogen economy will play a key role in future energy systems. Several thermal and catalytic methods for hydrogen production have been presented. In this review, methane thermocatalytic and thermal decomposition into hydrogen gas and solid carbon are considered. These processes, known as the thermal decomposition of methane (TDM) and thermocatalytic decomposition (TCD) of methane, respectively, appear to have the greatest potential for hydrogen production. In particular, the focus is on the different types and properties of carbons formed during the decomposition processes. The applications for carbons are also investigated.

Sign in / Sign up

Export Citation Format

Share Document