Core–Shell Structured Catalysts for Hydrocarbon Pyrolysis
1 October 2026
Affiliation
NUS
Focus topic
Low-carbon H2 & Derivatives
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Summary
A novel embedded core-shell TiO₂@Ni-SiO₂ catalyst has been developed for low-temperature methane pyrolysis to produce CO₂-free hydrogen and metal-free carbon nanotubes (CNTs). Unlike conventional fully encapsulated core-shell catalysts, the embedded TiO₂ overlayer stabilises Ni nanoparticles while maintaining active catalytic sites, enabling operation at approximately 500°C.
Laboratory testing achieved ~25% methane conversion without a membrane and >40% conversion with a Pd membrane at ambient pressure, while maintaining catalyst stability over 4 hours. The catalyst produces high-purity metal-free CNTs via a base-growth mechanism and exhibits superior regeneration potential compared with conventional Ni catalysts.
Current work focuses on laboratory-scale validation and scale-up towards pilot demonstration with potential industrial partners in the hydrogen and power sectors.
What makes this novel compared to best-in-class technology?
Embedded TiO₂ overlayer stabilises Ni nanoparticles without fully blocking active sites, enabling lower-temperature methane pyrolysis, improved catalyst durability and regeneration, and direct production of metal-free carbon nanotubes alongside CO₂-free hydrogen.
TRL Level
1-3
Relevant for
Hydrogen production plants, methane pyrolysis facilities, natural gas processors, gas-fired power plants, industrial hydrogen users, petrochemical plants, catalyst manufacturers, carbon nanotube producers
About
Inventors: Sibudjing Kawi
Affiliation: National University of Singapore (NUS), Department of Chemical and Biomolecular Engineering
Contact NUS for licensing opportunities and more information.
Please quote ID ref [2025-134] in your email.