Coordination structures of vanadium and iron in MCM-41 and the catalytic properties in partial oxidation of methane

2005 ◽  
Vol 77 (2-3) ◽  
pp. 223-234 ◽  
Author(s):  
Qinghong Zhang ◽  
Wei Yang ◽  
Xiaoxing Wang ◽  
Ye Wang ◽  
Tetsuya Shishido ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Catalytic Properties ◽  
Partial Oxidation Of Methane ◽  
Oxidation Of Methane ◽  
Mcm 41

The effect of the nature of the support on catalytic properties of ruthenium supported catalysts in partial oxidation of methane to syn-gas

2011 ◽  
Vol 52 (5) ◽  
pp. 711-715 ◽  
Author(s):  
T. P. Maniecki ◽  
K. Bawolak ◽  
P. Mierczyński ◽  
P. Kaczorowski ◽  
W. K. Jóźwiak
Keyword(s):  
Partial Oxidation ◽  
Catalytic Properties ◽  
Supported Catalysts ◽  
Partial Oxidation Of Methane ◽  
Oxidation Of Methane

Catalytic performance of vanadium incorporated MCM-41 catalysts for the partial oxidation of methane to formaldehyde

2006 ◽  
Vol 302 (1) ◽  
pp. 48-61 ◽  
Author(s):  
Guoan Du ◽  
Sangyun Lim ◽  
Yanhui Yang ◽  
Chuan Wang ◽  
Lisa Pfefferle ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Catalytic Performance ◽  
Partial Oxidation Of Methane ◽  
Oxidation Of Methane ◽  
Mcm 41

MCM-41-supported iron phosphate catalyst for partial oxidation of methane to oxygenates with oxygen and nitrous oxide

2003 ◽  
Vol 217 (2) ◽  
pp. 457-467 ◽  
Author(s):  
Xiaoxing Wang ◽  
Ye Wang ◽  
Qinghu Tang ◽  
Qian Guo ◽  
Qinghong Zhang ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Partial Oxidation ◽  
Iron Phosphate ◽  
Partial Oxidation Of Methane ◽  
Oxidation Of Methane ◽  
Mcm 41 ◽  
Iron Phosphate Catalyst ◽  
Supported Iron

scholarly journals The Role of Active Sites Location in Partial Oxidation of Methane to Syngas for MCM-41 Supported Ni Nanoparticles

Catalysts ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 606 ◽  
Author(s):  
Chuanmin Ding ◽  
Junwen Wang ◽  
Yufeng Li ◽  
Qian Ma ◽  
Lichao Ma ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Active Sites ◽  
Catalytic Performance ◽  
Partial Oxidation Of Methane ◽  
Pore Channel ◽  
Impregnation Method ◽  
Ni Nanoparticles ◽  
Oxidation Of Methane ◽  
Supported Ni ◽  
Mcm 41

The supporting modes of active metal over mesoporous materials play an important role in catalytic performance. The location of Ni nanoparticles inside or outside the mesoporous channel of MCM-41 has a significant influence on the reactivity in partial oxidation of methane to syngas reaction. The characterization data using different techniques (Transmission Electron Microscope (TEM), X-Ray Diffraction (XRD), N2 adsorption-desorption, H2 Temperature-Programmed Reduction (H2-TPR), and Inductively Coupled Plasma (ICP)) indicated that nickel was located outside the mesoporous channels for the impregnation method (Ni/MCM-41), while nickel was encapsulated within MCM-41 via the one-step hydrothermal crystallization method (Ni-MCM-41). The nickel atoms were mainly dispersed predominantly inside the skeleton of zeolite. When the load amount of Ni increased, both of Ni species inside the skeleton or pore channel of zeolite increased, and the ordered structure of MCM-41 was destroyed gradually. Contributed by the strong interaction with MCM-41, the Ni particles of Ni-MCM-41 were highly dispersed with smaller particle size compared with supported Ni/MCM-41 catalyst. The Ni-MCM-41 displayed higher catalytic performance than Ni/MCM-41, especially 10% Ni-MCM-41 due to high dispersity of Ni. The confinement effect of MCM-41 zeolite also afforded high resistance of sintering and coking for 10% Ni-MCM-41 catalyst. Especially, 10% Ni-MCM-41 catalyst showed outstanding catalytic stability.

Sign in / Sign up

Export Citation Format

Share Document