Effect of a mesoporous catalyst on the flash pyrolysis of tobacco

Emilio Calabuig,Antonio Marcilla

doi:10.1016/j.tca.2021.179032

Emilio Calabuig, Antonio Marcilla

Open Access

https://doi.org/10.1016/j.tca.2021.179032

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Journal: Thermochimica Acta	Publication Date: Sep 1, 2021
Citations: 7	License type: cc-by

Affiliation: University of Alicante

Abstract

Thermal and catalytic pyrolysis of a tobacco blend were studied by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). The Py-GC/MS experiments were carried out in helium and air atmosphere at 300, 500 and 700 °C. SBA-15 mesoporous silica has been used as a catalyst blended with the tobacco at 5%, 15% and 50%. The results obtained show that under inert atmosphere and at high pyrolysis temperatures, the catalyst addition did not significantly modify the formation of pyrolysis products, while under oxidising atmosphere and at low temperatures, the formation of pyrolysis products decrease considerably. It was found that components linked to tobacco use responsible of the most severe health effects are generated from 500 °C on. Catalyst selectivity has been observed, maintaining nicotine release while decreasing the generation of other pyrolysis products. It was found that the concentration of the catalyst modifies the formation of the selected pyrolysis products significantly, although 5% of the catalyst is enough to obtain significant results.

Highlights

Tobacco use is one of the leading causes of premature mortality globally, contributing to around 18% of all deaths [1]. 87.5% of these deaths are from direct tobacco use, while the remaining are due to non-smokers being exposed to second-hand smoke [2]
The present study focuses on the flash thermal and catalytic pyrolysis at three different temperatures of a reference tobacco blend using PyGC/MS
The pyrolysis of tobacco and tobacco blended with 5%, 15% and 50% SBA-15 have been studied by Py-GC/MS under inert and oxidising atmospheres at 300, 500 and 700 ◦C

Summary

Introduction

Tobacco use is one of the leading causes of premature mortality globally, contributing to around 18% of all deaths [1]. 87.5% of these deaths are from direct tobacco use, while the remaining are due to non-smokers being exposed to second-hand smoke [2]. Tobacco use is one of the leading causes of premature mortality globally, contributing to around 18% of all deaths [1]. 87.5% of these deaths are from direct tobacco use, while the remaining are due to non-smokers being exposed to second-hand smoke [2]. “heat not burn” (HNB) products, in which the tobacco is heated at tempera tures between 200 and 350◦C, taste more like conventional cigarettes while showing a reduction of ~ 90% in toxic and potentially toxic compounds, maintaining nicotine levels [7,8,9]

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Conclusion