Patent ID: 9409779
Filing Date: 2016-08-09
CPC Classification: B01J,B82Y,C01B,D01F,H01L

Claim Text:
1. A process for producing carbon nanotubes comprising: a) preparing a catalyst by joint precipitation: b) thermally pretreating the catalyst in an oxidizing atmosphere at a temperature between 300° C. and 900° C.; and c) decomposing a gaseous hydrocarbon on the catalyst to form carbon nanotubes; wherein the catalyst consists essentially of wherein said Mn is present in said catalyst in an amount in the range from 25-75 mol % and Co is present in said catalyst in an amount in the range of from 25-75 mol %, based on the total content of Mn and Co and optionally Mo, Cu, W, V, Cr, or Sn.