Preparation and characterization of aluminosilicate supports with a synthesized layer of catalytic filamentous carbon: I. Synthesis of carbon nanofibers on a supported nickel catalyst

Carbon-in-silica matrices for the preparation of heterogeneous biocatalysts: The synthesis of carbon nanofibers on a Ni/SiO2 catalyst and the characterization of the resulting adsorbents for the immobilization of thermostable lipase

“…The nickel content of the silica xerogel was varied from 0.1 to 10 wt %. The obtained granules of Ni catalysts were loaded into a fixed bed reactor, and the pyrolysis of C 3 -C 4 alkanes was performed in the presence of H 2 at 500°C for 60 min as described previously [10,11]. The coking of the initial SiO 2 xerogel (without Ni) was performed under analogous conditions for 5-60 min at 500°C.…”

“…These supports retain the geometric form and mechanical strength of initial matrices with supported M catalysts (M = Ni, Cu, Co, and Fe) made as granules, monoliths, or foam materials, and they possess unique adsorption capac ity [9][10][11][12][13]. Kovalenko and coauthors [9][10][11] system atically studied the synthesis of a CFC layer on differ ent inorganic supports, including honeycomb mono liths and foam ceramics. The study of the texture characteristics of the resulting adsorbents showed that the specific surface area was ~500 m 2 /(g carbon) in terms of CNFs; nanopores 10-50 nm in diameter were predominant in the texture of the CFC layer.…”