Nanotechnology catalytical techniques are having a profound impact on clean energy research and development, ranging from hydrogen and liquid fuel production to clean combustion technologies. In this area, catalyst stability is paramount for technical application, and remains a major challenge, even for many conventional catalysts. Thermal stability in particular is a challenge across many currently discussed technical applications and an obstacle for many nanocatalyst. In particular fuel processing technologies (hydrogen and/or liquid fuel production from fossil and renewable resources, clean combustion) typically proceed at particularly severe conditions (high temperatures, high through. put, contaminated fuel streams, etc) and hence require particular attention to catalyst stabilization, but even many processes at much lower temperature conditions, such as fuel cells, are still looking for catalysts with improved stability.