Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received April 28, 2025
Revised July 21, 2025
Accepted July 23, 2025
Available online December 25, 2025
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Porosity Control of Spherical Ni/Al2O3 Catalysts to Reduce Internal Diffusion Resistance for Enhanced Methane Dry Reforming Performance
https://doi.org/10.1007/s11814-025-00527-9
Abstract
Designing catalyst particles with high catalytic activity and low pressure drop across the catalyst bed remains a critical challenge
for the practical operation of dry reforming of methane (DRM) processes. In this study, the pore structure of spherical
Ni/Al2O3 catalyst particles was modified to reduce internal mass transfer limitations. The pore diameter and volume of the
spherical alumina supports were successfully controlled by varying the HCl treatment duration. The modified pore structure
resulting from HCl treatment significantly alleviated internal diffusion resistance, enhancing catalytic performance even
under short residence times. Ni/Al_12h catalysts which showed the largest mesopore diameter and pore volume exhibit significantly
enhanced catalytic performance in terms of CH4
and CO2
specific activity and H2
specific production rate under
high gas hourly space velocity (GHSV) (100,000 h −1) condition, due to reduced internal mass transfer limitation. And it
shows stable catalytic activity without any catalytic deactivation.
