Simulation of Methane Steam Reforming Enhanced by in Situ CO2 Sorption Using K2CO3-Promoted Hydrotalcites for H2 Production

2013 ◽  
Vol 27 (8) ◽  
pp. 4457-4470 ◽  
Author(s):  
Naruewan Chanburanasiri ◽  
Ana M. Ribeiro ◽  
Alirio E. Rodrigues ◽  
Navadol Laosiripojana ◽  
Suttichai Assabumrungrat
Keyword(s):  
Steam Reforming ◽  
H2 Production ◽  
Methane Steam Reforming ◽  
Co2 Sorption ◽  
Methane Steam

Effect of Catalytic Distribution on the Performance of Microreactor for Hydrogen Production through Methane Steam Reforming

2010 ◽  
Vol 156-157 ◽  
pp. 873-876 ◽  
Author(s):  
Feng Wang ◽  
Zi Long An ◽  
Bo Qi ◽  
Jing Zhou
Keyword(s):  
Steam Reforming ◽  
Active Sites ◽  
Flow Direction ◽  
Space Velocity ◽  
H2 Production ◽  
Methane Steam Reforming ◽  
Reactor Performance ◽  
Methane Steam ◽  
Site Density ◽  
Availability Ratio

The effect of catalyst coating distributing on the reactor performance for methane steam reforming(MSR) was numerically investigated. In calculation, the amount catalyst loaded on the microreactor wall was fixed but the catalyst active site density was distributed according to arithmetic progression along the flow direction. Results show that it is possible to get the higher conversion of CH4 and output of H2 due to the higher availability ratio of catalyst surface active sites at this distribution. And this distribution effect is more remarkable at higher space velocity or lower reaction temperature, however, there exists an optimal distribution which can reach the highest CH4 conversion and H2 production at 900K.

Methane Steam Reforming Over NiO/CexZryO2-Sil-1 Catalyst Prepared by In-Situ Self-Assembly

2019 ◽  
Vol 19 (11) ◽  
pp. 7416-7420
Author(s):  
Ning Wei ◽  
Jia Zhang ◽  
Hexiang Zhong ◽  
Liwei Pan ◽  
Zeyu Wang ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Steam Reforming ◽  
Self Assembly ◽  
Methane Conversion ◽  
High Surface ◽  
Synthesis Method ◽  
Methane Steam Reforming ◽  
Molar Ratio ◽  
Methane Steam

NiO/CexZryO2-Sil-1 catalysts were prepared using an In-Situ self-assembly approach by coupling silicalite-1 and CexZryO2. This one-step synthesis method utilized the high surface area and hydrothermal stability of silicalite-1 and the good oxidation-reduction ability of the CexZryO2, and hence offered high synthesis efficiency. The catalyst structure was examined by N2-physisorption, temperature-programmed reduction, transmission electron microscopy, and X-ray diffraction. All the results showed that silicalite-1 was well-encapsulated by NiO/Ce0.5Zr0.5O2. Furthermore, the effect of the Ce/Zr molar ratio on the performance of the catalysts was investigated in detail. The catalysts were subjected to methane steam reforming at high temperatures to evaluate their catalytic performance. The result showed that the NiO/Ce0.5Zr0.5O2-Sil-1 catalyst exhibited the best performance and its methane conversion efficiency reached up to 99.5%. Even after 16 h of continuous stability test, this catalyst could retain a methane conversion efficiency of 97.8%.

In situ synthesis of Ni/MgO catalysts on inorganic paper-like matrix for methane steam reforming

2013 ◽  
Vol 229 ◽  
pp. 515-521 ◽  
Author(s):  
Shin Miura ◽  
Yuuka Umemura ◽  
Yusuke Shiratori ◽  
Takuya Kitaoka
Keyword(s):  
Steam Reforming ◽  
In Situ Synthesis ◽  
Methane Steam Reforming ◽  
Methane Steam
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