日本ゼオライト学会　刊行物 Publication of Japan Zeolite Association

Carbon nanotubes (CNTs) are very promising materials supporting nano technology in 21^st century, because they are very thin fibers that have never been seen so far and they have excellent electric, thermal, and mechanical properties. In order to industrialize CNTs, the method to produce high quality CNTs at reasonable cost is required. And the production method to control the diameter and the chirality of CNTs is expected. We have researched the method to synthesize CNTs by catalytic decomposition of carbon containing compounds on metal catalysts supported on zeolites (CCVD method). We have succeeded in the selective synthesis of single-walled CNTs, double-walled CNTs, and multi-walled CNTs as well as the synthesis of high-purity and high-quality CNTs by this method.