Low temperature catalytic pyrolysis performances of heated tobacco sheets by alkali/alkaline earth metal

Influence of anionic species on the low temperature pyrolysis performance of heated tobacco sheets catalyzed by sodium salts

“…The heated tobacco sheets used in this study were obtained from China Tobacco Henan Industry Co., Ltd., and their chemical composition can be found in the literature ( Li et al, 2023 ). The reagents utilized in the experiment included the following high-quality substances: sodium acetate trihydrate (analytical grade, Tianjin Fuchen Chemical Reagent Factory), anhydrous sodium carbonate (analytical grade, Aladdin), anhydrous trisodium phosphate (analytical grade, Aladdin), sodium citrate (analytical grade, Aladdin), and sodium tartrate (analytical grade, Kemiou Chemical Reagent Co., Ltd.).…”

“…The specific surface area and pore size distribution of the sample were determined using nitrogen physical adsorption (Micromeritics ASAP 2020), during which the specific surface areas of the samples were calculated using the BET formula, the total pore volumes were calculated based on the adsorption capacity of N 2 when P/P 0 is 0.98, and the pore diameter was calculated using the BJH method. The experimental parameters can be found in the literature ( Li et al, 2023 ). The thermal properties of the samples were evaluated using a Mettler thermal analyzer.…”

“…The heating temperature was generally around 300°C. However, due to the lower use temperature, heated tobacco sheets often failed to undergo pyrolysis reactions to produce flavor substances, resulting in lower smoke volume and aroma concentration, which significantly differed from traditional tobacco products ( Eaton et al, 2018 ; Forster et al, 2018 ; Gasparyan et al, 2018 ; Li et al, 2023 ). Therefore, it is a crucial technical problem to develop low temperature pyrolysis technology for heated tobacco sheets, increasing the release of flavor in the development of heated tobacco products.…”

“…Heated tobacco sheets, as a unique type of biomass resource, have the potential to benefit from the application of these catalysts in low temperature catalytic pyrolysis. In our previous study ( Li et al, 2023 ), we investigated the effects of different types of cations, such as sodium, potassium, magnesium, and calcium, on the low temperature pyrolysis performance of heated tobacco sheets. The results demonstrated that sodium catalysts significantly reduced the pyrolysis temperature and enhanced the release of flavor substances.…”

Preparation of tobacco pyrolysis liquids in subcritical/supercritical ethanol and their application in the aroma enhancement of heated cigarettes

“…Unlike traditional cigarettes, which mainly release aromatic substances through high-temperature combustion, heated cigarettes are a new type of cigarette that use closed heating to distill and pyrolyze tobacco components to release aerosols without combustion ( Gasparyan et al, 2018 ; Li et al, 2023 ). Their heating temperature is generally less than 350 o C and only distillation and simple pyrolysis reactions occur, which effectively mitigate the generation of toxic and potentially toxic compounds that are harmful to humans and the environment ( Caputi, 2017 ; Farsalinos et al, 2018 ; El-Kaassamani et al, 2022 ; Ardati et al, 2023 ).…”