Isobutane dehydrogenation kinetics determination in a modified Berty gradientless reactor

1992 ◽  
Vol 31 (9) ◽  
pp. 2088-2093 ◽  
Author(s):  
Andreas G. Zwahlen ◽  
John B. Agnew
Keyword(s):  
Isobutane Dehydrogenation ◽  
Dehydrogenation Kinetics ◽  
Gradientless Reactor

Anti-coke behavior of an alumina nanosheet supported Pt–Sn catalyst for isobutane dehydrogenation

2021 ◽  
Author(s):  
Xin-Qian Gao ◽  
Wei Song ◽  
Wen-Cui Li ◽  
An-Hui Lu
Keyword(s):  
Isobutane Dehydrogenation ◽  
Supported Platinum ◽  
Defect Sites ◽  
Catalytic Reactivity

Alumina nanosheet supported platinum-based catalysts exhibited excellent catalytic reactivity and stability with an anti-coke capacity in the isobutane dehydrogenation process due to the abundant defect sites and decreased acidity.

Isobutane dehydrogenation on various platinum supported mixed metallophosphate oxynitride catalysts MM′PON (M = Al, M′ = Ga,Cr)

1997 ◽  
Vol 17 (15-16) ◽  
pp. 2007-2010 ◽  
Author(s):  
E. Gueguen ◽  
S. Delsarte ◽  
V. Peltier ◽  
R. Conanec ◽  
R. Marchand ◽  
...  
Keyword(s):  
Isobutane Dehydrogenation

scholarly journals Improvement of Hydrogen Desorption Characteristics of MgH2 With Core-shell Ni@C Composites

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3113 ◽  
Author(s):  
Cuihua An ◽  
Qibo Deng
Keyword(s):  
Low Cost ◽  
Hydrogen Desorption ◽  
Core Shell ◽  
Desorption Kinetics ◽  
Hydrogen Storage Materials ◽  
High Hydrogen ◽  
Dehydrogenation Kinetics ◽  
Materials Research ◽  
High Theoretical Capacity ◽  
Kinetics Of

Magnesium hydride (MgH2) has become popular to study in hydrogen storage materials research due to its high theoretical capacity and low cost. However, the high hydrogen desorption temperature and enthalpy as well as the depressed kinetics, have severely blocked its actual utilizations. Hence, our work introduced Ni@C materials with a core-shell structure to synthesize MgH2-x wt.% Ni@C composites for improving the hydrogen desorption characteristics. The influences of the Ni@C addition on the hydrogen desorption performances and micro-structure of MgH2 have been well investigated. The addition of Ni@C can effectively improve the dehydrogenation kinetics. It is interesting found that: i) the hydrogen desorption kinetics of MgH2 were enhanced with the increased Ni@C additive amount; and ii) the dehydrogenation amount decreased with a rather larger Ni@C additive amount. The additive amount of 4 wt.% Ni@C has been chosen in this study for a balance of kinetics and amount. The MgH2-4 wt.% Ni@C composites release 5.9 wt.% of hydrogen in 5 min and 6.6 wt.% of hydrogen in 20 min. It reflects that the enhanced hydrogen desorption is much faster than the pure MgH2 materials (0.3 wt.% hydrogen in 20 min). More significantly, the activation energy (EA) of the MgH2-4 wt.% Ni@C composites is 112 kJ mol−1, implying excellent dehydrogenation kinetics.

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