Preparation of porous carbon with high dispersion of Ru nanoparticles by sol–gel method and its application in hydrogen storage.

Release Time:2025-04-30  Hits:

• Date:2025-04-30
• Title of Paper:Preparation of porous carbon with high dispersion of Ru nanoparticles by sol–gel method and its application in hydrogen storage.
• Journal:Journal of Materials Chemistry A
• Summary:Nano-Ru/porous carbon composites were prepared by Ru/aerogels which were made through a reaction
  of resorcinol, formaldehyde and RuCl3$3H2O. The specific surface area (SSA) measurement showed that
  there was an SSA maximum with the increase of Ru loading. The sample RRu ¼ 5 (mol percent) obtained
  the largest SSA value of 1970 m2 g1 and the most homogeneous distribution of Ru nanoparticles on the
  porous carbon surface. It also obtained the highest hydrogen adsorption value of 0.8 wt% (7.5 MPa) and
  4.1 wt% (4 MPa) at 298 and 77 K respectively. Considering the H2 compressed within the pores, the
  corresponding total value reached up to 1.4 wt% (P ¼ 7.5 MPa) and 6.3 wt% (P ¼ 6.5 MPa) at 298 and
  77 K respectively. Compared with porous carbon, the Ru/porous carbon composites had an obvious
  adsorption increase under the same SSA conditions at 298 K, which were contributed by the hydrogen
  spillover of Ru. The calculated contribution rate for hydrogen adsorption was 38%. However, the
  spillover effect also brought a hysteresis phenomenon during hydrogen desorption since the hydrogen
  spilled from the hydride into the carbon matrix needed a lower pressure to move and release
• Co-author:Chen, Y. Z; Liu, Y.N.
• Volume:2(24)
• Page Number:9193-9199
• Translation or Not:No
• Date of Publication:2014-09-02