Synthesis gas production by dry reforming of methane over Neodymium-modified hydrotalcite-derived nickel catalysts

2021 ◽  
pp. 107104
Author(s):  
Xiaoqing Yuan ◽  
Bin Li ◽  
Xiujun Wang ◽  
Baitao Li
2018 ◽  
Vol 58 (3) ◽  
pp. 203-213 ◽  
Author(s):  
A. G. Dedov ◽  
A. S. Loktev ◽  
I. E. Mukhin ◽  
A. A. Karavaev ◽  
S. I. Tyumenova ◽  
...  

Processes ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 157
Author(s):  
Ahmed Sadeq Al-Fatesh ◽  
Mayankkumar Lakshmanbhai Chaudhary ◽  
Anis Hamza Fakeeha ◽  
Ahmed Aidid Ibrahim ◽  
Fahad Al-Mubaddel ◽  
...  

H2 production through dry reforming of methane (DRM) is a hot topic amidst growing environmental and atom-economy concerns. Loading Ni-based reducible mixed oxide systems onto a thermally stable support is a reliable approach for obtaining catalysts of good dispersion and high stability. Herein, NiO was dispersed over MOx-modified-γ-Al2O3 (M = Ti, Mo, Si, or W; x = 2 or 3) through incipient wetness impregnation followed by calcination. The obtained catalyst systems were characterized by infrared, ultraviolet–visible, and X-ray photoelectron spectroscopies, and H2 temperature-programmed reduction. The mentioned synthetic procedure afforded the proper nucleation of different NiO-containing mixed oxides and/or interacting-NiO species. With different modifiers, the interaction of NiO with the γ-Al2O3 support was found to change, the Ni2+ environment was reformed exclusively, and the tendency of NiO species to undergo reduction was modified greatly. Catalyst systems 5Ni3MAl (M = Si, W) comprised a variety of species, whereby NiO interacted with the modifier and the support (e.g., NiSiO3, NiAl2O4, and NiWO3). These two catalyst systems displayed equal efficiency, >70% H2 yield at 800 °C, and were thermally stable for up to 420 min on stream. 5Ni3SiAl catalyst regained nearly all its activity during regeneration for up to two cycles.


2015 ◽  
Vol 17 (2) ◽  
pp. 959-972 ◽  
Author(s):  
T. M. C. Hoang ◽  
E. R. H. van Eck ◽  
W. P. Bula ◽  
J. G. E. Gardeniers ◽  
L. Lefferts ◽  
...  

Valorisation of humin by-products: the chemical structure of humin and the evolution as well as reactivity of humin in dry reforming.


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