New carbon composites containing ultrafine metal particles. 2. Synthesis by pyrolisis of pitch-organometallic blends |
| |
| Authors: | Hajime Yasuda Akio Hiwara Akira Nakamura and Hiroshi Sakai |
| |
| Affiliation: | (1) Department of Applied Chemistry, Faculty of Engineering, Hiroshima University, Saijo, 724 Higashi-Hiroshima, Japan;(2) Department of Macromolecular Science, Faculty of Science, 560 Toyonaka, Osaka, Japan;(3) Department of Chemistry, Faculty of Science, Hiroshima University, 730 Hiroshima, Japan |
| |
| Abstract: | Air-stable new carbon composites containing uniformly dispersed ultrafine Fe, Co, Ni, Ru, Pd, Rh, or Ag particles were obtained by thermal degradation of coal pitches mixed homogeneously with 1–10% of poly(vinyl ferrocene), cobaltocene, nickelocene, (acenaphthylene) Ru3(CO)7, PdCl2(COD), RhCp(COD), and AgC6H4CH2NMe2, respectively, at 400–1200°C in Ar. Carbonization yields are 45–55% and the size of metal particles varied from 5 to 65 nm depending upon the treatment temperature and identity of the metal. The carbon composites containing Fe particles showed high Vicat hardness and good electrical conductivity. Pd- and Rh-dispersed materials exhibited good catalysis in hydrogenation of 1-hexene. The composite containing ultrafine Ag particles showed excellent bacteriostatic activity forEscherichia coli, Pseudomonas aeruginosa, andBatchillus subtilis. |
| |
| Keywords: | Carbon composites ultrafine metal particles metallocene hydrogenation catalyst bacteriostatic activity |
| 本文献已被 SpringerLink 等数据库收录！ |
|
