scholarly journals The Distinctive Effects of Glucose-Derived Carbon on the Performance of Ni-Based Catalysts in Methane Dry Reforming

Catalysts ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 21
Author(s):  
UPM Ashik ◽  
Shusaku Asano ◽  
Shinji Kudo ◽  
Doan Pham Minh ◽  
Srinivas Appari ◽  
...  
Keyword(s):  
Physicochemical Characteristics ◽  
Dry Reforming ◽  
Co2 Conversion ◽  
Metal Dispersion ◽  
Ni Catalysts ◽  
Methane Dry Reforming ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
The Stability

This study aimed to investigate the effect of carbon derived from glucose (C) on the physicochemical characteristics and catalytic activity of Ni, supported over SiO2, ZSM-5, and TiO2 in methane dry reforming. Among the Ni catalysts without C, Ni/SiO2 exhibited the highest CH4-CO2 conversion and stability at all experimented temperatures. On the other hand, the C-incorporated catalysts prepared by glucose impregnation, followed by pyrolysis, showed dissimilar performances. C improved the stability of Ni/SiO2 in the reforming at 650 °C and 750 °C and increased the CH4 and CO2 conversion to the level close to the thermodynamic equilibrium at 850 °C. However, this element did not substantially affect the activity of Ni/ZSM-5 and exerted a retarding effect on Ni/TiO2. Characterizations with H2-TPD, XRD, EXAFS, and STEM-EDS revealed that the different influences of C by the supports were attributed to the extent of metal dispersion and metal-support interaction.

Size-dependent strong metal-support interaction in Pd/ZnO catalysts for hydrogenation of CO2 to methanol

2021 ◽  
Author(s):  
Liangcai Zhang ◽  
Xinyu Liu ◽  
Hengwei Wang ◽  
Lina Cao ◽  
Chenxi Huang ◽  
...  
Keyword(s):  
Catalytic Reactions ◽  
Hydrogenation Of Co2 ◽  
Size Dependent ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
The Stability ◽  
Smsi Effect ◽  
Strong Metal Support Interaction

Strong metal-support interaction (SMSI) has long been studied in catalytic reactions. Proper utilization of the SMSI effect might not only improve the stability of the catalysts, but also the activity...

scholarly journals Plasma Promotes Dry Reforming Reaction of CH4 and CO2 at Room Temperature with Highly Dispersed NiO/γ-Al2O3 Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1433
Author(s):  
Shan-Shan Lin ◽  
Peng-Rui Li ◽  
Hui-Bo Jiang ◽  
Jian-Feng Diao ◽  
Zhong-Ning Xu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Particle Size ◽  
Room Temperature ◽  
Dry Reforming ◽  
Impregnation Method ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Highly Dispersed ◽  
Metal Support ◽  
Al2o3 Catalyst

Plasma is an efficient method that can activate inert molecules such as methane and carbon dioxide in a mild environment to make them reactive. In this work, we have prepared an AE-NiO/γ-Al2O3 catalyst using an ammonia-evaporation method for plasma promoted dry reforming reaction of CO2 and CH4 at room temperature. According to the characterization data of XRD, H2-TPR, TEM, XPS, etc., the AE-NiO/γ-Al2O3 catalyst has higher dispersion, smaller particle size and stronger metal-support interaction than the catalyst prepared by the traditional impregnation method. In addition, the AE-NiO/γ-Al2O3 catalyst also exhibits higher activity in dry reforming reaction. This work provides a feasible reference experience for the research of plasma promoted dry reforming reaction catalysts at room temperature.

Effects of metal support interaction on dry reforming of methane over Ni/ Ce‐Al 2 O 3 catalysts

2020 ◽  
Vol 98 (11) ◽  
pp. 2425-2434
Author(s):  
Sagir Adamu ◽  
Abdul‐Rashid Bawah ◽  
Oki Muraza ◽  
Zuhair Malaibari ◽  
Mohammad M. Hossain
Keyword(s):  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support

Development of Mo/γ-Al2O3-CeO2 Catalyst with High Thermal Stability by Modified Impregnation Method

2017 ◽  
Vol 888 ◽  
pp. 491-495
Author(s):  
Anita Ramli ◽  
Muhammad Farooq
Keyword(s):  
Thermal Stability ◽  
Supported Catalyst ◽  
High Thermal Stability ◽  
Binding Energies ◽  
Impregnation Method ◽  
Support Interaction ◽  
Characterization Techniques ◽  
Metal Support Interaction ◽  
Metal Support ◽  
The Stability

In the present studies, different characterization techniques have been utilized to evaluate the stability of catalysts prepared by modified impregnation method. The results indicated that strong metal-support (Mo-support) interaction existed in the γ-Al2O3-CeO2 supported catalyst with higher CeO2 loading as compared to the Mo/γ-Al2O3 catalyst. This suggested that the addition of CeO2 into the γ-Al2O3 enhanced the metal-support interaction, thus decreases the reducibility, depending on the CeO2 loading. Similarly, the catalyst with higher CeO2 loading exhibited lower Ce 3d and higher Mo 3d binding energies respectively, supporting the TPR results.

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