Affiliation:
1. Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043, China
Abstract
Laser pyrolysis of CH3Br by a strong laser irradiation was studied in this work. Besides a fine needle of
solid carbon was deposited at the surface on the substrate, HBr and CH4, were found as gaseous products
with a ratio of 2:1. Small amount of C2H2 was also detected. The variation in the pressures of CH3Br,
HBr and CH4 were measured by Raman spectroscopy. It indicated that the decomposition of CH3Br was
first order with respect to CH3Br. The reaction mechanism of the laser pyrolysis was suggested as follows:
After gaining enough energy at the hot spot, CHaBr was pyrolyzed to produce HBr and CH2 which then
reacted with CH3Br to form CH4, and solid carbon.
Subject
Spectroscopy,Biochemistry,Atomic and Molecular Physics, and Optics
Cited by
5 articles.
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