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

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.

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

Catalyst Selection for Hydrogenation of 1,2-Dihydroacenaphthylene

1998 ◽  
Vol 63 (11) ◽  
pp. 1945-1953 ◽  
Author(s):  
Jiří Hanika ◽  
Karel Sporka ◽  
Petr Macoun ◽  
Vladimír Kysilka
Keyword(s):  
Activation Energy ◽  
Nickel Catalyst ◽  
Palladium Catalyst ◽  
Active Component ◽  
Reaction Order ◽  
Nickel Catalysts ◽  
Practical Application ◽  
Repeated Use ◽  
Selection For ◽  
Catalyst Selection

The activity of ruthenium, palladium, and nickel catalysts for the hydrogenation of 1,2-dihydroacenaphthylene in cyclohexane solution was studied at temperatures up to 180 °C and pressures up to 8 MPa. The GC-MS technique was used to identify most of the perhydroacenaphthylene stereoisomers, whose fractions in the product were found dependent on the nature of the active component of the catalyst. The hydrogenation was fastest on the palladium catalyst (3% Pd/C). The nickel catalyst Ni-NiO/Al2O3, which is sufficiently active also after repeated use, can be recommended for practical application. The activation energy of 1,2-dihydroacenaphthylene hydrogenation using this catalyst is 17 kJ/mol, the reaction order with respect to hydrogen is unity.

Direct synthesis of hexitols from microcrystalline cellulose and birch over zirconium(iv) phosphate supported nickel catalysts and the mechanism study

2021 ◽  
Vol 23 (3) ◽  
pp. 1353-1360
Author(s):  
Xiaodong Liu ◽  
Xiaohao Liu ◽  
Ning Li ◽  
Peiyong Ma ◽  
Ying Zhang
Keyword(s):  
Microcrystalline Cellulose ◽  
Direct Synthesis ◽  
Nickel Catalysts ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Mechanism Study ◽  
Structure Activity ◽  
Supported Nickel Catalysts

A series of Ni/ZrPx catalysts with precisely regulated acid and hydrogenation sites were prepared to study the structure–activity relationship for sorbitol production directly from microcrystalline cellulose and raw biomass.

Highly Efficient LaxCe1–xO2–x/2 Nanorod-Supported Nickel Catalysts for CO Methanation: Effect of La Addition

2021 ◽  
Vol 35 (4) ◽  
pp. 3307-3314
Author(s):  
Yahong Han ◽  
Jinxian Zhao ◽  
Yanhong Quan ◽  
Shunan Yin ◽  
Shiping Wu ◽  
...  
Keyword(s):  
Nickel Catalysts ◽  
Co Methanation ◽  
Highly Efficient ◽  
Supported Nickel Catalysts ◽  
La Addition
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