Byproducts of floating catalyst method for preparing carbon nanotubes;

The synthesis of single-walled carbon nanotubes(SWNTs)by floating catalyst method,using phos- phorus as promoter,was investigated.

Carbon nanotubes with good quality were prepared continuously in a vertical reactor by floating catalyst method, in which the catalyst precursor was directly carried into the reactor by a gas flow, thus avoiding the tedious step of catalyst preparation.

Multi-wall carbon nanotubes(MWNT) were preparaed by floating catalytic pyrolysis method,using liquid paraffin as the carbon source,ferrocene as the precursor of catalyst and dimethyl sulfoxide as the growth accelerant.

Single-walled carbon nanotubes with different diameter were synthesized successfully by catalytic pyrolysis method when helium,nitrogen and argon was used as carrier gas,respectively.

Carbon spheres with onion structure were prepared by catalytic pyrolysis method and graphitized at 2300 ℃ and 2800 ℃.

The interface between carbon fiber and CNTs/CNFs grown on the surface of carbon fibers combined well by catalytic pyrolysis method.

Large-scale mutil-waller carbon nanotubes have been synthesized by catalytic decomposition of C 2H 2 in N 2 atmosphere on bimetallic Fe-Co catalysts.

The continuous synthesis was realized by controling parameters using floating catalyst method.

The carbon micro/nano-materials with different morphologies are synthesized in a single horizontal high-temperature resistance furnace by floating catalyst method with a reaction system using ethanol as the carbon source,through varying the experimental factors such as the types of the catalysts,the kinds and flow rates of the reaction gases and additives.