Sulfur Distribution on the Surface of Mesoporous Nanofibrous Carbon
, E-ISSN: 1873-3891
||A. Carbon filaments, B. Catalyst, Chemical vapor deposition, C. Adsorption, D. Surface properties
Boreskov Institute of Catalysis, Prospekt Ak. Lavrentieva, 5, Novosibirsk 630090, Russia
Distribution of sulfur in the mesoporous carbon catalysts for the direct selective oxidation of hydrogen sulfide has been investigated. Granules of carbon nanofibers, produced by catalytic pyrolysis of methane on the heavily loaded nickel and copper–nickel catalysts were used as catalysts. It was established that sulfur deposits similar to the adsorbates which actively interact with the adsorbent surface via the typical mechanism of physical adsorption, involving the filling of micropores at low sorption degrees with consequent formation of a single-layered coverage on the rest surface. A method for studying such distribution is proposed.