Identification of the structure of Ni active sites for ethylene oligomerization on an amorphous silica-alumina supported nickel catalyst

2021 ◽  
Vol 42 (12) ◽  
pp. 2181-2188
Author(s):  
Jinghua Xu ◽  
Ruifeng Wang ◽  
Yaru Zhang ◽  
Lin Li ◽  
Wenjun Yan ◽  
...  
Keyword(s):  
Nickel Catalyst ◽  
Amorphous Silica ◽  
Active Sites ◽  
Ethylene Oligomerization ◽  
Supported Nickel Catalyst ◽  
Silica Alumina

Unraveling the real active sites of an amorphous silica–alumina-supported nickel catalyst for highly efficient ethylene oligomerization

2021 ◽  
Author(s):  
Jinghua Xu ◽  
Ruifeng Wang ◽  
Lirong Zheng ◽  
Junguo Ma ◽  
Wenjun Yan ◽  
...  
Keyword(s):  
Nickel Catalyst ◽  
Amorphous Silica ◽  
Active Sites ◽  
Ethylene Oligomerization ◽  
Supported Nickel Catalyst ◽  
The Real ◽  
Highly Efficient ◽  
Silica Alumina

The Ni+ species in a heterogeneous N2-pretreated amorphous silica–alumina-supported nickel catalyst acted as the active sites for ethylene oligomerization.

scholarly journals Ethylene Oligomerization over Nickel Supported Silica-Alumina Catalysts with High Selectivity for C10+ Products

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 180 ◽  
Author(s):  
Lei Chen ◽  
Guangci Li ◽  
Zhong Wang ◽  
Shuangju Li ◽  
Mingjie Zhang ◽  
...  
Keyword(s):  
Reaction Temperature ◽  
Aging Temperature ◽  
Active Sites ◽  
High Selectivity ◽  
Acid Sites ◽  
Ethylene Oligomerization ◽  
Octahedral Coordination ◽  
Activation Temperature ◽  
High Aging Temperature ◽  
Silica Alumina

The nickel (II) loading silica-alumina under various treatments in terms of aging temperature, Si/Al ratio and activation temperature were investigated by XRD, N2 adsorption-desorption, TEM, UV-Vis, NH3-TPD and XRF and then applied to catalyze the ethylene oligomerization. High aging temperature, low Si/Al ratio and high activation temperature were beneficial to high selectivity for C10+ products because of a reasonable match between Ni active sites and acid sites, high Ni loading content and less octahedral coordination Ni2+ species, respectively. Ni loading content was more important than the number of acid sites for high yield of C10+ products, and less octahedral coordination Ni2+ species favored less by-products produced at high reaction temperature. In addition, other experimental conditions, such as reaction temperature, weight hourly space velocity (WHSV) and nickel precursor were discussed in the paper.

Hydrodeoxygenation of angelica lactone dimers and trimers over silica-alumina supported nickel catalyst

2016 ◽  
Vol 86 ◽  
pp. 943-948 ◽  
Author(s):  
Olubunmi O. Ayodele ◽  
Folasegun A. Dawodu ◽  
Dongxia Yan ◽  
Xingmei Lu ◽  
Jiayu Xin ◽  
...  
Keyword(s):  
Nickel Catalyst ◽  
Supported Nickel Catalyst ◽  
Silica Alumina ◽  
Angelica Lactone

Acidity Characterization of Amorphous Silica–Alumina

2012 ◽  
Vol 116 (40) ◽  
pp. 21416-21429 ◽  
Author(s):  
Emiel J.M. Hensen ◽  
Dilip G. Poduval ◽  
Volkan Degirmenci ◽  
D.A J. Michel Ligthart ◽  
Wenbin Chen ◽  
...  
Keyword(s):  
Amorphous Silica ◽  
Silica Alumina

Hydrogenation of anthracene over active carbon-supported nickel catalyst

1998 ◽  
Vol 45 (1-4) ◽  
pp. 361-366 ◽  
Author(s):  
Z.-G Zhang ◽  
K Okada ◽  
M Yamamoto ◽  
T Yoshida
Keyword(s):  
Nickel Catalyst ◽  
Active Carbon ◽  
Supported Nickel Catalyst

Effect of Modified Nanoclay Surface Supported Nickel Catalyst on Carbon Dioxide Reforming of Methane

2021 ◽  
Author(s):  
Juthasiri Chaisamphao ◽  
Sirapassorn Kiatphuengporn ◽  
Kajornsak Faungnawakij ◽  
Waleeporn Donphai ◽  
Metta Chareonpanich
Keyword(s):  
Carbon Dioxide ◽  
Nickel Catalyst ◽  
Carbon Dioxide Reforming ◽  
Supported Nickel Catalyst
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