Numerical Analysis of Inlet Gas-Mixture Flow Rate Effects on Carbon Nanotube Growth Rate

• Main Authors: B. Zahed, T. Fanaei S., H. Ateshi
• Format: Article
• Language: English
• Published: University of Sistan and Baluchestan (USB) and the Iranian Society of Mechanical Engineers (ISME) 2013-01-01
• Series: Transport Phenomena in Nano and Micro Scales
• Subjects: Chemical Vapor Deposition; Numerical Analysis; Carbon Nanotube
• Online Access: http://tpnms.usb.ac.ir/article_994_52a54eb2f90863cb821e6c9896191495.pdf

The growth rate and uniformity of Carbon Nano Tubes (CNTs) based on Chemical Vapor Deposition (CVD) technique is investigated by using a numerical model. In this reactor, inlet gas mixture, including xylene as carbon source and mixture of argon and hydrogen as  carrier gas enters into a horizontal CVD reactor at atmospheric pressure. Based on the gas phase and surface reactions, released carbon atoms are grown as CNTs on the iron catalysts at the reactor hot walls. The effect of inlet gas-mixture flow rate, on CNTs growth rate and its uniformity is discussed. In addition the velocity and temperature profile and also species concentrations throughout the reactor are presented.