Abstract
The influence of Ru/La–Al2O3 catalyst loading (100–200 mg) was investigated over high cell density Fecralloy® monoliths (461 cpsi, 1367 cpsi) for methane steam reforming (SMR). A uniform and well-attached catalyst layer was developed by in-situ washcoating method and the developed catalysts were analyzed by using various physico-chemical characterization techniques. The results confirmed the impact of catalyst loading on the geometric and hydraulic properties of monoliths, and methane conversion was improved by increasing both the catalyst loading and cell density. As per characteristic time analysis, no external and washcoat diffusion regimes were observed and SMR was found to be in kinetic controlling regime. The methane conversion was still limited by the amount of catalyst (200 mg) deposited onto the monoliths (40.9 μm for 461 cpsi, 26.9 μm for 1367 cpsi) which demonstrated the potential to deposit more catalyst up to the transition point of washcoat diffusion limitations. For same washcoat thickness of ∼20.6 μm, the higher cell density 1367 cpsi monolith showed better catalytic activity towards SMR as compared to 461 cpsi monolith and this improvement is more prominent at lower temperature with a value of 13.6% higher methane conversion at 600 °C, WHSV = 55 NL h−1 gcat −1 and S/C = 3.0.
Original language | English |
---|---|
Pages (from-to) | 11778-11792 |
Number of pages | 15 |
Journal | International Journal of Hydrogen Energy |
Volume | 43 |
Issue number | 26 |
Early online date | 30 May 2018 |
DOIs | |
Publication status | Published - 28 Jun 2018 |
Funding
The authors acknowledge the Italian Ministry of Education, University, and Research ( PRIN IFOAMS n. 2010XFT2BB , the Basque Government ( IT1069-16 ), the Spanish MINECO/FEDER ( ENE2015-66975-C3-3-R and CTQ2015-73901-JIN ), and the FP7 European program with the related national organisms ( ERANETMED ENERG-11-065 SOL-CARE ) for the financial support. Appendix A
Keywords
- Fecralloy washcoated monoliths
- High cell density
- Hydrogen production
- Kinetic regime
- Ru/La–AlO catalyst
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology
Fingerprint
Dive into the research topics of 'Insights into the effect of catalyst loading on methane steam reforming and controlling regime for metallic catalytic monoliths'. Together they form a unique fingerprint.Equipment
-
3Flex Physisorption Analyser (BET)
Material and Chemical Characterisation (MC2)Facility/equipment: Equipment
-