Characterization and Catalytic Performances of Three-Dimensional Mesoporous FeSBA-1 Catalysts

2006 ◽  
Vol 110 (24) ◽  
pp. 11924-11931 ◽  
Author(s):  
Ajayan Vinu ◽  
Thangavelu Krithiga ◽  
Veerappan Vaithilingam Balasubramanian ◽  
Anjana Asthana ◽  
Pavuluri Srinivasu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Catalytic Performances

Three-dimensional Mesoporous TiKIT-6 withIa3dSymmetry Synthesized at Low Acid Concentration and Its Catalytic Performances

2008 ◽  
Vol 37 (10) ◽  
pp. 1016-1017 ◽  
Author(s):  
Ajayan Vinu ◽  
Pavuluri Srinivasu ◽  
Veerappan V. Balasubramanian ◽  
Katsuhiko Ariga ◽  
Toshiyuki Mori ◽  
...  
Keyword(s):  
Acid Concentration ◽  
Three Dimensional ◽  
Catalytic Performances

scholarly journals Effect of pore geometry of mesoporous supports on catalytic performances in methane reforming

2018 ◽  
Vol 171 ◽  
pp. 01003
Author(s):  
Joy Tannous ◽  
Leila Karam ◽  
Marie-Nour Kaydouh ◽  
Henri El Zakhem ◽  
Nissrine El Hassan ◽  
...  
Keyword(s):  
Coke Formation ◽  
Three Dimensional ◽  
Dry Reforming ◽  
Methane Reforming ◽  
X Ray Diffraction ◽  
Methane Dry Reforming ◽  
X Ray ◽  
Spent Catalysts ◽  
Temperature Programmed ◽  
Catalytic Performances

Catalysts prepared using three dimensional SBA-16 silica support (composed of micropores and cage-like mesopores) were tested in the reaction of methane dry reforming, in comparison with 2D hexagonal mesoporous SBA-15 support. The samples were evaluated by N2 sorption and X-Ray diffraction (XRD) for the assessment of their textural and structural properties. The reducibility was characterized by temperature programmed reduction (TPR). The catalytic performances were evaluated in methane dry reforming and spent catalysts (after reaction) were characterized for the evaluation of sintering and coke formation by TPH/MS, XRD and HR-TEM.

scholarly journals Preparation and Electrocatalysis Application of Pure Metallic Aerogel: A Review

Catalysts ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1376
Author(s):  
Ran Zhang ◽  
Yan Zhao
Keyword(s):  
Active Sites ◽  
Synergetic Effect ◽  
Three Dimensional ◽  
Utilization Efficiency ◽  
High Porosity ◽  
Quantum Size ◽  
Dimensional Network ◽  
High Utilization ◽  
Preparation Strategy ◽  
Catalytic Performances

Nanomaterials are widely used in electrocatalysts due to their quantum size effect and high utilization efficiency. There are two ways to improve the activity of nanoelectrocatalysts: increasing the number of active sites and improving the inherent activity of each catalytic site. The structure of the catalyst itself can be improved by increasing the number of exposed active sites per unit mass. The high porosity and three-dimensional network structure enable aerogels to have the characteristics of a large specific surface area, exposing many active sites and bringing structural stability through the self-supporting nature of aerogels. Thus, by adjusting the compositions of aerogels, the synergetic effect introduced by alloy elements can be utilized to further improve the single-site activity. In this review, we summarized the basic preparation strategy of aerogels and extended it to the preparation of alloys and special structure aerogels. Moreover, through the eight electrocatalysis cases, the outstanding catalytic performances and broad applicability of aerogel electrocatalysts are emphasized. Finally, we predict the future development of pure metallic aerogel electrocatalysts from the perspective of preparation to application.

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