Deactivation of nickel catalysts by thiophene in benzene hydrogenation

1988 ◽  
Vol 36 (1) ◽  
pp. 177-182 ◽  
Author(s):  
R. M. Masagutov ◽  
L. V. Kovaleva ◽  
B. F. Morozov ◽  
S. I. Spivak
Keyword(s):  
Nickel Catalysts ◽  
Benzene Hydrogenation

scholarly journals Benzene Hydrogenation Activities of Supported Nickel Catalysts in Relation to Their Chemisorption Properties

1995 ◽  
Vol 12 (2) ◽  
pp. 151-159 ◽  
Author(s):  
Th. El-Nabarawy ◽  
A.A. Attia ◽  
M.A. Hamada ◽  
A.M. Youssef
Keyword(s):  
Crystallite Size ◽  
Surface Area ◽  
Metal Surface ◽  
Textural Properties ◽  
Nitrogen Adsorption ◽  
Nickel Catalysts ◽  
Nickel Nitrate ◽  
Benzene Hydrogenation ◽  
Supported Nickel Catalysts

Samples of nickel on alumina (1.1–10.4 wt.% Ni) were prepared by impregnating alumina in hydrated nickel nitrate. The textural properties of the calcined catalysts have been determined from nitrogen adsorption at 77 K. Calcined catalysts were reduced prior to determination of the chemisorbed benzene at 308 K or chemisorbed hydrogen at 383 K. Hydrogenation of benzene was also determined at 473 K using the flow technique. The surface area of NiO/Al2O3 catalysts decrease and their mean pore radii increase with an increase in NiO content. These changes are more pronounced for catalysts containing more than 5% metal. Chemisorption of benzene proceeds via the formation of π-bonds with nickel. The chemisorption of hydrogen indicated that the percentage dispersion decreases and the crystallite size increases with an increase in metal loading. Dispersion, crystallite size and metal surface are important factors in determining the activity of supported nickel catalysts for benzene hydrogenation.

Benzene hydrogenation over alumina-supported nickel nanoparticles prepared by polyol method

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 59858-59864 ◽  
Author(s):  
Tahar Mokrane ◽  
Abdel-Ghani Boudjahem ◽  
Mohammed Bettahar
Keyword(s):  
Catalytic Activity ◽  
Nickel Nanoparticles ◽  
Nickel Catalysts ◽  
Polyol Method ◽  
Benzene Hydrogenation ◽  
Supported Nickel Catalysts

The reactivity of alumina-supported nickel catalysts can be improved by storing hydrogen in catalysts. This illustrates that a smooth correlation exists between the amount of stored hydrogen in catalysts and the catalytic activity.

Benzene hydrogenation activity of nickel catalysts prepared from amorphous Ni-Zr alloys

1994 ◽  
Vol 26 (3-4) ◽  
pp. 401-409 ◽  
Author(s):  
Takeshige Takahashi ◽  
Soh -ichro Higashi ◽  
Takami Kai ◽  
Hisamichi Kimura ◽  
Takeshi Masumoto
Keyword(s):  
Nickel Catalysts ◽  
Benzene Hydrogenation ◽  
Hydrogenation Activity ◽  
Zr Alloys

Activation Energy for Benzene Hydrogenation over Supported Nickel Catalysts

Nature ◽  
1966 ◽  
Vol 212 (5066) ◽  
pp. 1039-1040 ◽  
Author(s):  
JOHN B. BUTT ◽  
JAMES P. IRVING
Keyword(s):  
Activation Energy ◽  
Nickel Catalysts ◽  
Benzene Hydrogenation ◽  
Supported Nickel Catalysts

Pre-reforming of Liquefied Petroleum Gas over Magnesium Aluminum Mixed Oxide Supported Nickel Catalysts

2013 ◽  
Vol 33 (7) ◽  
pp. 1176-1182
Author(s):  
Xinxing WANG ◽  
Xueguang WANG ◽  
Xingfu SHANG ◽  
Wangxin NIE ◽  
Xiujing ZOU ◽  
...  
Keyword(s):  
Mixed Oxide ◽  
Nickel Catalysts ◽  
Liquefied Petroleum Gas ◽  
Supported Nickel Catalysts

Gas chromatographic study of the sorption of C1-C3 alkanes on nickel catalysts

1969 ◽  
Vol 34 (9) ◽  
pp. 2652-2661
Author(s):  
L. Scháněl ◽  
P. Schneider ◽  
V. Bažant
Keyword(s):  
Nickel Catalysts ◽  
Chromatographic Study
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