Effect of molybdenum carbide concentration on the Ni/ZrO2 catalysts for steam-CO2 bi-reforming of methane

RSC Advances ◽  
2015 ◽  
Vol 5 (122) ◽  
pp. 100865-100872 ◽  
Author(s):  
Weizuo Li ◽  
Zhongkui Zhao ◽  
Panpan Ren ◽  
Guiru Wang
Keyword(s):  
Catalytic Activity ◽  
Synthesis Gas ◽  
Molybdenum Carbide ◽  
Nickel Catalysts ◽  
Efficient Approach ◽  
Supported Nickel Catalysts

This work presents an efficient approach to enhance the catalytic activity and stability of supported nickel catalysts for steam-CO2 bi-reforming of methane to synthesis gas by introducing the appropriate amount of molybdenum carbide.

Chemisorption of Oxygen on Supported Nickel Catalysts

1993 ◽  
Vol 58 (4) ◽  
pp. 839-844 ◽  
Author(s):  
Hana Zahradníková ◽  
Olga Šolcová ◽  
Květa Jirátová
Keyword(s):  
Catalytic Activity ◽  
Oxygen Uptake ◽  
Diethylene Glycol ◽  
Reductive Amination ◽  
Nickel Catalysts ◽  
Oxygen Chemisorption ◽  
Supported Nickel Catalysts

One unsupported nickel catalysts (about 55 wt.% Ni) supported on SiO2, Al2O3, TiO2, Nb2O5, ZrO2, V2O5 and ZnO were characterized by pulse dynamic oxygen chemisorption measured at -78 °C and evaluated in the reaction of reductive amination of diethylene glycol. Correlation was obtained between their oxygen uptake and catalytic activity.

An Overview of Reforming Technologies and the Effect of Parameters on the Catalytic Performance of Mesoporous Silica/Alumina Supported Nickel Catalysts for Syngas Production by Methane Dry Reforming

2020 ◽  
Vol 13 (4) ◽  
pp. 303-322
Author(s):  
M.A. Saad ◽  
N.H. Abdurahman ◽  
Rosli Mohd Yunus ◽  
Mohammed Kamil ◽  
Omar I. Awad
Keyword(s):  
Catalytic Activity ◽  
Mesoporous Silica ◽  
Nickel Catalysts ◽  
Catalytic Performance ◽  
Dry Reforming ◽  
Future Research ◽  
Methane Dry Reforming ◽  
Syngas Production ◽  
Silica Alumina ◽  
Supported Nickel Catalysts

Synthetic gas - a combination of (H2) and (CO) - is an important chemical intermediate for the production of liquid hydrocarbon, olefin, gasoline, and other valuable chemicals. Several reforming methods that use steam, carbon dioxide, and oxygen in the presence of various catalytic systems have been extensively investigated, and this paper reviews the recent research on the state-of-the-art of reforming technologies and the effect of parameters on the catalytic activity of mesoporous silica/alumina supported nickel catalysts for syngas production by methane dry reforming. First, we provide an overview of reforming technologies, including methane dry reforming, steam methane reforming, partial oxidation of CH4, and auto thermal reforming of CH4. Then, we review the literature on dry reforming catalysts. Next, we describe recent findings on the effect of parameters on the catalytic activity of mesoporous silica/alumina supported nickel catalysts for syngas production. Finally, we make proposals for future research. This study can help achieve a better understanding of the reforming technologies and the effects of parameters on catalytic performance for syngas production, thus contributing to the development of green technologies.

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.

scholarly journals Nickel Oxide Catalysts for Partial Oxidation of Methane to Synthesis Gas

2016 ◽  
Vol 18 (1) ◽  
pp. 25
Author(s):  
K. Dossumov ◽  
H. Kurokawa ◽  
Y.G. Yergaziyeva ◽  
L.K. Myltykbayeva ◽  
S.Zh. Tayrabekova
Keyword(s):  
Heat Treatment ◽  
Partial Oxidation ◽  
Synthesis Gas ◽  
Nickel Catalysts ◽  
Xrd Analysis ◽  
Treatment Temperature ◽  
Partial Oxidation Of Methane ◽  
Oxidation Of Methane ◽  
Supported Nickel Catalysts ◽  
High Calcination Temperature

<p class="Default">Nickel catalysts supported on different carriers (θ-Al<sub>2</sub>O<sub>3</sub>, γ-Al<sub>2</sub>O<sub>3</sub>, HZSM-5 with γ-Al<sub>2</sub>O<sub>3</sub>, HZSM-5, and NaX) have been investigated for the partial oxidation of methane. All the supported nickel catalysts showed a high activity for the formation of synthesis gas, and γ-Al<sub>2</sub>O<sub>3</sub> was the most effective among all the tested carriers. The effect of the heat-treatment temperature of the 3 wt.% Ni/γ-Al<sub>2</sub>O<sub>3</sub> catalyst on its catalytic activity was studied, and a considerable decrease in its activity was observed by the heat-treatment of the catalyst at 1000 °C compared with the catalysts prepared by the 300–800 °C – calcination. The XRD analysis suggested the formation of NiAl<sub>2</sub>O<sub>4</sub> that is a non-reducible compound at the high calcination temperature. The addition of a modifier (Co, Ce, or La) to the 3 wt.% Ni/γ-Al<sub>2</sub>O<sub>3</sub> catalyst increased the selectivity to H<sub>2</sub> and CO with the decreasing selectivity to CO<sub>2</sub>, and the highest selectivity to H<sub>2</sub> was obtained by the 5 wt.% NiLa/γ-Al<sub>2</sub>O<sub>3</sub>. The developed 5 wt.% NiLa/γ-Al<sub>2</sub>O<sub>3</sub> catalyst showed a high stability for 30 h for the partial oxidation of methane at 750 °C. The methane conversion reached 95%, selectivity to hydrogen 83% and 52% to carbon monoxide.</p>

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
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