Towards a full understanding of the nature of Ni(ii) species and hydroxyl groups over highly siliceous HZSM-5 zeolite supported nickel catalysts prepared by a deposition–precipitation method

2016 ◽  
Vol 45 (6) ◽  
pp. 2720-2739 ◽  
Author(s):  
Bao-Hui Chen ◽  
Zi-Sheng Chao ◽  
Hao He ◽  
Chen Huang ◽  
Ya-Juan Liu ◽  
...  
Keyword(s):  
Nickel Catalysts ◽  
Precipitation Method ◽  
Hydroxyl Groups ◽  
Full Understanding ◽  
Supported Nickel Catalysts

A mechanism for the preparation of highly siliceous HZSM-5 zeolite supported nickel catalysts via a deposition–precipitation (D–P) method.

Optimization of nano-sized Ni/MgAl2O4 catalyst synthesis by the surfactant-assisted deposition precipitation method for steam pre-reforming of natural gas

RSC Advances ◽  
2016 ◽  
Vol 6 (66) ◽  
pp. 61536-61543 ◽  
Author(s):  
Ahmad Reza Keshavarz ◽  
Mansooreh Soleimani
Keyword(s):  
Natural Gas ◽  
Nickel Catalysts ◽  
Precipitation Method ◽  
Magnesium Aluminate ◽  
Catalyst Synthesis ◽  
Supported Nickel Catalysts ◽  
Surfactant Assisted

In this work, steam pre-reforming of natural gas over magnesium aluminate-supported nickel catalysts (Ni/MgAl2O4) was studied.

scholarly journals COMBINED STEAM AND CO2 REFORMING OF CH4 OVER NICKEL CATALYSTS BASED ON Al2O3–MO (M= Mg, Ca, Ba)

2018 ◽  
Vol 55 (1B) ◽  
pp. 49
Author(s):  
Phuong P. H.
Keyword(s):  
Nickel Catalysts ◽  
Precipitation Method ◽  
Impregnation Method ◽  
Co2 Reforming ◽  
Co2 Reforming Of Ch4 ◽  
Transmission Electron ◽  
Catalytic Stability ◽  
Supported Nickel Catalysts ◽  
Temperature Programmed ◽  
Co Precipitation

A series of 10 wt% Ni/Al2O3–MO (M = Mg, Ca, Ba) catalyst was prepared by impregnation method for applying in the combined steam and carbon dioxide reforming of methane (CSCRM). In this study, five supported nickel catalysts were impregnated on different supports. All of the supports have been obtained by co–precipitation method and also have been investigated. Several techniques, including N2 physisorption measurements, X–ray powder diffraction (XRD), temperature–programmed reduction using H2 (H2–TPR), and transmission electron microscopy (TEM) were used to investigate catalysts’ physicochemical properties. The results showed that MgO was the most suitable promoter comparing with CaO and BaO in CSCRM. The presence of MgO in Ni/Al2O3 changed catalysts’ characteristics leading to an increase in the catalytic activity and stability with time on stream (TOS). It was found that the suitable catalyst was Ni–based on Al2O3–MgO of mass ratio 2:1 which showed a high metal dispersion as well as dominated spinel structure. The CH4 and CO2 conversion at 800 °C reached 99.8 % and 51.7 %, respectively. Catalytic stability of this catalyst with TOS at 800 °C could reach to more than 20 hours until it started decreasing.

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

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

Dehydrogenation of Cyclohexanol to Cyclohexanone on Supported Nickel Catalysts

1989 ◽  
Vol 18 (5) ◽  
pp. 777-780 ◽  
Author(s):  
Yoshio Uemichi ◽  
Takeshi Sakai ◽  
Takaji Kanazuka
Keyword(s):  
Nickel Catalysts ◽  
Supported Nickel Catalysts
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