Abstract: The invention relates to carbon nanoparticles from fibers or tubes or combinations thereof, which have the morphology of macroscopic, spherical and/or spheroid secondary agglomerates, separated from each other. The invention also relates to a method for producing carbon nanoparticles by a CVD method using nanoporous catalyst particles having a spherical and/or spheroid secondary structure and comprising nanoparticulate metals and/or metal oxides or the precursors thereof as the catalytically active components. The inventive carbon nanoparticles are suitable for use in adsorbents, additives or active materials in energy accumulating systems, in supercapacitors, as filtering media, as catalysts or supports for catalysts, as sensors or as substrate for sensors, as additives for polymers, ceramics, metals and metal alloys, glasses, textiles and composite materials.