The HI catalytic decomposition for the lab-scale H2 producing apparatus of the iodine–sulfur thermochemical cycle

Activity and stability of Pt catalysts supported on carbon nanotubes, active carbon and γ-Al2O3 for HI decomposition in iodine–sulfur thermochemical cycle

“…3 illustrates the HI conversion with the reaction time at 500 C over 0.5 g of different supports and 0.1 g of Pt-support catalysts, respectively. Among the three kinds of pure supports, the AC shows the best activity for HI decomposition, which agrees with the results reported in the literature [12,18,23]. During comparing the activity of different supports with that of different supported Pt catalysts, the differences between their reaction conditions should be noted.…”

“…Liberatore et al from ENEA first reported that the CNT supported Pt had very good activity for HI decomposition [9]. Recently, in our previous studies of HI catalytic decomposition for the lab-scale H 2 producing apparatus of IS-10, the CNT supported Pt catalyst was found to have better catalytic performance than the active carbon supported Pt catalyst [23]. Researches of ENEA and INET revealed that CNT supported Pt had excellent activity for HI decomposition.…”

Comparisons of Pt catalysts supported on active carbon, carbon molecular sieve, carbon nanotubes and graphite for HI decomposition at different temperature

“…The Pt/CMS demonstrated the highest HI conversion at 400 C among the four different supported Pt catalyst. This result maybe ascribes to the synergy effect of the surface Pt particles and the CMS support which showed the highest activity among the four kinds of carbon materials [19]. Among these different carbon supports, the CNT has presented some advantages because it could enable small size and uniform distribution of supported Pt nanoparticles.…”

“…In a previous paper, we have reported that Pt catalysts supported on different carbon materials including active carbon (AC), carbon molecular sieve (CMS), carbon nanotubes (CNT) and graphite (GR) showed different activity for HI decomposition at 500 C [19]. However, no systematic studies have been conducted on the comparisons of the roles of different carbon materials as catalyst supports for HI decomposition and it is interesting to compare the Pt catalysts supported on different carbon materials for HI decomposition at different temperature.…”

Catalytic performance of bimetallic Ni-Pt nanoparticles supported on activated carbon, gamma-alumina, zirconia, and ceria for hydrogen production in sulfur-iodine thermochemical cycle

“…The supported Pt-catalysts were found to be not stable at high temperatures during hydrogen iodide-decomposition and showed agglomeration of Pt nanoparticles (Pt/AC = 5.1 nm and used Pt/AC = 16 -22 nm) [26][27][28]. Further, the addition of second metal atoms along with Pt metal into supported Pt-catalysts resulted into high sintering resistance of Pt nanoparticles during hydrogen iodide-decomposition [23][24][25].…”