Temperature programmed reduction studies of nonpyrophoric Raney nickel catalysts

1989 ◽  
Vol 38 (1) ◽  
pp. 181-185
Author(s):  
A. B. Fasman ◽  
S. D. Mikhailenko ◽  
E. V. Leongard ◽  
T. A. Khodareva ◽  
A. I. Lyashenko
Keyword(s):  
Raney Nickel ◽  
Nickel Catalysts ◽  
Temperature Programmed Reduction ◽  
Temperature Programmed

Temperature programmed reduction of silica supported nickel catalysts

1993 ◽  
Vol 271 (11) ◽  
pp. 1100-1105 ◽  
Author(s):  
M. Afzal ◽  
C. R. Theocharis ◽  
S. Karim
Keyword(s):  
Nickel Catalysts ◽  
Temperature Programmed Reduction ◽  
Supported Nickel Catalysts ◽  
Temperature Programmed

Temperature-programmed reduction of silica-supported platinum/nickel catalysts studied by XANES

1992 ◽  
Vol 96 (3) ◽  
pp. 1324-1328 ◽  
Author(s):  
Andreas Jentys ◽  
Brian J. McHugh ◽  
Gary L. Haller ◽  
Johannes A. Lercher
Keyword(s):  
Nickel Catalysts ◽  
Temperature Programmed Reduction ◽  
Supported Platinum ◽  
Temperature Programmed

scholarly journals Novel Nickel- and Magnesium-Modified Cenospheres as Catalysts for Dry Reforming of Methane at Moderate Temperatures

Catalysts ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1066 ◽  
Author(s):  
Bogdan Samojeden ◽  
Marta Kamienowska ◽  
Armando Izquierdo Colorado ◽  
Maria Elena Galvez ◽  
Ilona Kolebuk ◽  
...  
Keyword(s):  
Supported Catalysts ◽  
Temperature Programmed Desorption ◽  
Catalytic Performance ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Temperature Programmed Reduction ◽  
Fly Ashes ◽  
Coal Fly Ashes ◽  
Temperature Programmed ◽  
Mg Content

Cenospheres from coal fly ashes were used as support in the preparation of Ni–Mg catalysts for dry reforming of methane. These materials were characterized by means of XRD, H2-temperature-programmed reduction (H2-TPR), CO2-temperature-programmed desorption (CO2-TPD), and low-temperature nitrogen sorption techniques. The cenosphere-supported catalysts showed relatively high activity and good stability in the dry reforming of methane (DRM) at 700 °C. The catalytic performance of modified cenospheres was found to depend on both Ni and Mg content. The highest activity at 750 °C and 1 atm was observed for the catalyst containing 30 wt % Mg and 10, 20, and 30 wt % Ni, yielding to CO2 and CH4 conversions of around 95%.

Temperature-programmed reduction of CuO−NiO/Al2O3 catalysts

1982 ◽  
Vol 21 (3) ◽  
pp. 295-298 ◽  
Author(s):  
T. Paryjczak ◽  
J. Rynkowski ◽  
K. Krzyzanowski
Keyword(s):  
Temperature Programmed Reduction ◽  
Temperature Programmed

scholarly journals High-Active Metallic-Activated Carbon Catalysts for Selective Hydrogenation

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Nicolás Carrara ◽  
Carolina Betti ◽  
Fernando Coloma-Pascual ◽  
María Cristina Almansa ◽  
Laura Gutierrez ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Selective Hydrogenation ◽  
Nickel Catalysts ◽  
Metallic Phase ◽  
Hydrogen Chemisorption ◽  
Electronic Effects ◽  
X Ray ◽  
Mild Conditions ◽  
Temperature Programmed ◽  
Carbon Catalysts

A series of low-loaded metallic-activated carbon catalysts were evaluated during the selective hydrogenation of a medium-chain alkyne under mild conditions. The catalysts and support were characterized by ICP, hydrogen chemisorption, Raman spectroscopy, temperature-programmed desorption (TPD), temperature-programmed reduction (TPR), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR micro-ATR), transmission electronic microscopy (TEM), and X-ray photoelectronic spectroscopy (XPS). When studying the effect of the metallic phase, the catalysts were active and selective to the alkene synthesis. NiCl/C was the most active and selective catalytic system. Besides, when the precursor salt was evaluated, PdN/C was more active and selective than PdCl/C. Meanwhile, alkyne is present in the reaction media, and geometrical and electronic effects favor alkene desorption and so avoid their overhydrogenation to the alkane. Under mild conditions, nickel catalysts are considerably more active and selective than the Lindlar catalyst.

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