Volatile Products Formed in the Thermal Decomposition of a Tobacco Substrate

Abstract

The identification and quantification of volatile species formed in the thermal degradation of tobacco substrates was investigated by TG-FTIR analysis. A specific experimental methodology was developed to obtain quantitative data on key components of interest present in evolved gases during TG-FTIR runs in air and nitrogen at low heating rates. Multivariate deconvolution techniques were used to identify the contributions of the key components of interest to the overall FTIR spectra. Validation runs were carried out to test the limits of the TG-FTIR technique. Significant data were obtained for the quantitative characterization and the emission profiles of some key components of evolved gases, such as acetaldehyde, carbon dioxide, carbon monoxide, nicotine, and water. A different experimental strategy based on the use of a fixed bed reactor was applied to the characterization of glycerol evolved from the tobacco substrate, thus obtaining a complete figure of the main components of the evolved gases formed during the slow thermal decomposition of tobacco substrates in nitrogen and air.

TGA/FTIR study of the MCM-41-catalytic pyrolysis of tobacco and tobacco–glycerol mixtures

“…Therefore, in this work, we focus on the effect of the addition of MCM-41. The results shown in Figure 4 are in good agreement with that reported by Barontini et al [31] for the content of CO 2 , CO, water and acetaldehyde in the evolved gas from the pyrolysis of shredded tobacco. Figure 3 shows the evolution with temperature of the FTIR selected bands appearing in the spectra of the gases evolved from the thermal and catalytic pyrolysis of glycerol.…”

“…In that work it was reported that the glycerol condensed in the transfer line from the TG to the FTIR spectrometer, and the signal corresponding to that compound was observed during all the experiment, as a result of the entrainment of this compound by the carrier gas throughout the experiment. Barontini et al [31] have also investigated the identification and quantification of volatile species formed in the pyrolysis of tobacco by TGA/FTIR, and developed an interesting methodology based on multivariate deconvolution techniques in order to quantify the key components of interes in smoke.…”

Thermal Decomposition of Electronic Cigarette Liquid. Ir Study

“…The authors used the experimental conditions and methods similar with ones we have used for studying the electronic cigarette liquid. In the products of tobacco combustion, they have found the large amounts of carbonyl compounds of different structure [30][31][32], acetaldehyde [31], carbon monoxide [30][31][32], mixture of phenolic compounds [30,32], formic acid [30], ammonia [32], hydrogen cyanide [30] and propanal [30]. These toxic components were not detected in the presented study.…”

“…It is worth noting that there is a number of articles describing the thermal decomposition of tobacco [e. g. [30][31][32]. The authors used the experimental conditions and methods similar with ones we have used for studying the electronic cigarette liquid.…”

Combustion of hazardous biological waste derived from the fermentation of antibiotics using TG–FTIR and Py–GC/MS techniques

“…Typically, the combustion behavior of AR materials can be divided into three regions: Region I was related to the primary degradation and evaporation of light component in AR materials (Barontini et al, 2013;Xu and Huang, 2010). As shown in Table 1, the KR material possessed a low peak temperature (T max1 ) and high weight loss in Region I.…”