We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Nanogold-Containing Catalysts for Low-Temperature Removal of S-VOC from Air.
- Authors
Kucherov, Alexei V.; Tkachenko, Olga P.; Kirichenko, Olga A.; Kapustin, Gennady I.; Mishin, Igor V.; Klementiev, Konstantin V.; Ojala, Satu; Kustov, Leonid M.; Keiski, Riitta
- Abstract
Activity and selectivity of mono- and bimetallic catalysts containing nano-particles of gold stabilized by different supports are compared in dimethyldisulfide removal from air at 150–320 °C. TiO2-supported Au and Au–Pd samples demonstrate stable and efficient DMDS removal at temperature as low as 155 °C, with formation of the two products: SO2 and elemental S. On the contrary, no formation of elemental S is detected in the case of Au, Au–Rh, and Au–Pd catalysts supported on HZSM-5, H-beta, or MCM-41. The most active Au–Rh/HZSM-5 catalyst demonstrates an efficient DMDS removal at 290 °C, with quantitative DMDS-to-SO2 oxidation. Characterization of catalysts with TPR, XRD, and (XANES + EXAFS) confirms a high dispersion of the metallic phases in all catalysts under study. Specific interaction between nano-particles of gold and titanium dioxide surface could be responsible for the unusual catalytic behavior of Au/TiO2 samples, as distinct from Au/zeolitic systems.
- Subjects
GOLD; METAL catalysts; TITANIUM dioxide; PALLADIUM; ZEOLITES; VOLATILE organic compounds; NANOPARTICLES
- Publication
Topics in Catalysis, 2009, Vol 52, Issue 4, p351
- ISSN
1022-5528
- Publication type
Article
- DOI
10.1007/s11244-008-9168-y