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Novel silicon oxycarbide-carbon enriched composites (SiOC-C) were prepared from mixtures of SiOC and different amounts of carbon nanofibers (CNF) (0–10%) sintered through spark plasma sintering at 1500 °C. During sintering, the SiOC matrix experiences a rearrangement to SiO2, SiC and C, and the growth of SiC wires within the material which produce epitaxial graphene-like carbon flakes with AB stacking...
The relationship between the concentration of silane, the degree of surface coverage and the functionalization of multiwall carbon nanotubes (MWCNTs) upon silanization is experimentally investigated. MWCNT silanization is conducted using a γ-methacryloxypropyltrimethoxy silane varying its concentration with respect to the weight of the MWCNTs from 3.5% to 1000% (10×). Physicochemical characterization...
α,β-Unsaturated nitriles have been synthesized by sonochemical activated reactions of carbonylic compounds with malononitrile using two basic carbons (Na + - and Cs + -Norit) as catalysts. The catalysts were characterized by thermal analysis, X-ray photoelectron spectroscopy and nitrogen adsorption isotherms. Under the experimental conditions, unsaturated nitriles can be prepared with...
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