Reduction of tobacco smoke components yields by zeolites and synthesized Al-MCM-41

Marcilla, A.; Gómez-Siurana, Amparo; Berenguer, D.; Martínez-Castellanos, I.; Beltrán, M.

doi:10.1016/j.micromeso.2012.05.010

Cited by 25 publications

(33 citation statements)

References 23 publications

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“…As can be seen, the normalized GS-intensities of the tobacco (Figure 2a) and tobacco-glycerol ( Figure 2c) pyrolysis at temperatures higher than 150ºC are lowered by the A c c e p t e d M a n u s c r i p t 7 presence of catalyst, thus indicating a decrease of the yield of volatile products. This is a very interesting result because MCM-41 and related products are being considered as additives for reducing tobacco smoke toxicity [28]. At temperatures lower than 150ºC, the evolution of water desorbed overlaps with dehydration of glycerol, and evaporation of other volatile compounds.…”

Section: Resultsmentioning

confidence: 83%

“…A c c e p t e d M a n u s c r i p t 11 this type of mixture [28]. Moreover, a wide step with a diffuse peak at around 460-490ºC can also be observed.…”

Section: Page 11 Of 41mentioning

confidence: 71%

“…The BET area, the pore size distribution (according to the BJH method with cylindrical geometry of the pores and using the Harkins and Jura equation for determining the adsorbed layer thickness (t)) and the pore volume from the N 2 adsorption isotherms are shown in Table 1. Figure 1 shows the XRD spectra of the catalyst, obtained in a Seifert equipment, model JSO-DEBYEEFLEX 2002, showing the existence of the (100) diffraction peak and the shoulders related to the presence of aluminium [28]. The particle size of the catalyst is lower than 70 μm.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…MCM-41 is a molecular sieve with an aluminosilicate based composition and characterized by its mesoporous structure which has been successfully tested as cigarette additive in order to reduce tobacco most smoke component yields [28]. The study of the catalytic effect of MCM-41 on the pyrolysis and oxidative pyrolysis of tobacco and mixtures of tobacco with several cigarette ingredients by Thermogravimetric analysis (TGA) has also been reported elsewhere [12,29].…”

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confidence: 99%

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

et al. 2014

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In this work, the catalytic effect of MCM-41 on the qualitative composition of the gases evolved in the pyrolysis of glycerol, tobacco and tobacco-glycerol mixtures has been studied by TGA/FTIR. The results obtained reflect that the amount of volatile products obtained from tobacco or from tobacco containing mixtures is noticeably decreased if the catalyst is used as a tobacco additive. The addition of the catalyst also produces noticeable changes in the composition of the gases obtained at each temperature. Such changes are more significant in the case of the pyrolysis of the tobacco-glycerol-mixture than in the pyrolysis of tobacco. The evolution patterns for different types of compounds reveal that the catalyst contributes to a noticeable decrease of the yields of methane, CO, CO 2 and carbonylic compounds, which could be interesting from the point of view of the use of MCM-41 as a tobacco additive in order to reduce tobacco smoke toxicity.

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Section: Resultsmentioning

confidence: 83%

“…A c c e p t e d M a n u s c r i p t 11 this type of mixture [28]. Moreover, a wide step with a diffuse peak at around 460-490ºC can also be observed.…”

Section: Page 11 Of 41mentioning

confidence: 71%

Section: Experimental Methodsmentioning

confidence: 99%

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confidence: 99%

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

et al. 2014

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“…Our research group has studied the effect of three commercial zeolites (HUSY, Hβ and HZSM-5) and an own-synthesized Al-MCM-41 catalyst when mixed with a commercial tobacco brand of cigarettes in order to study the modifications in the components of the tobacco smoke (21). We have also studied the effect of Al-MCM-41 on the thermal decomposition behaviour of tobacco (22), as well as the efficiency of solvent extraction for template removal in the synthesis of MCM-41 to be used as tobacco additive for smoke toxicity reduction (23).…”

Section: Introductionmentioning

confidence: 99%

Effect of Mesoporous Catalysts on the Mainstream Tobacco Smoke of 3R4F and 1R5F Reference Cigarettes

Gomis¹

2015

AJCHE

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Abstract:The effect of three synthesised mesoporous catalysts (a SBA-15 and two MCM-41) on the smoke of two reference tobaccos (1R5F and 3R4F) has been studied. Mixtures of the catalysts and each tobacco were smoked under the ISO 3388 standard conditions. The gaseous compounds and the particulate matter condensed in the filter tip (TPM-F) and in a trap located downstream (TPM-T) from the mainstream smoke were analysed separately. The results obtained show that these catalysts directly mixed with tobacco are capable of reducing the yield of most of the compounds studied in the mainstream tobacco smoke. SBA-15 is a better additive for reducing the amount of the compounds analysed in 1R5F and 3R4F tobaccos, both in the liquid fraction (TPM-F and TPM-T) and in the gas fraction. The effect of the studied catalysts is higher on the full-flavour cigarette than on the ultra-low one. As an example, the reductions observed for CO and nicotine in TPM-T from 3R4F as a consequence of the SBA-15 addition were 46% and 77%, respectively. Thus, although the three checked materials are able to provide noticeable reductions, the best is the one having the higher size of pores (SBA-15).

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Synthesis of humidity‐conditioning mesoporous molecular sieves by using liquid‐crystal display waste glass

Cheng

Lin

et al. 2020

Env Prog and Sustain Energy

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During this analysis, liquid-crystal display (LCD) waste glass containing high SiO 2 and Al 2 O 3 contents was investigated as an alternative source for the synthesis of a humidity-conditioning Al-MCM-41 mesoporous molecular sieve (HC-Al-MCM-41). The hydrothermal method of synthesis involved the use of supernatants of LCD glass waste and the cationic surfactant cetyltrimethylammonium bromide as a structural controller. Chemically examined LCD waste glass was used in the HC-Al-MCM-41 preparation. Silicates were used as a matrix and as a source of Si and Al precursors in HC-Al-MCM-41 preparation. HC-Al-MCM-41 has a uniform pore network and a transparent, hexagonal arrangement of pores or honeycomb-like structures synthesized at a hydrothermal temperature of 105 C. At 105 C and 120 C, the N 2 adsorption-desorption isotherms are commonly type IV, with the HC-Al-MCM-41 sampling characteristics of the hysteresis chain. The HC-Al-MCM-41 samples synthesized from LCD waste glass showed higher equilibrium moisture contents than mortars (0.8-1.6 m 3 /m 3) and bricks (0.3-0.8 m 3 /m 3) due to the ordered structure. When the hydrothermal reaction temperature was 105 C (relative humidity = 95%), HC-Al-MCM-41 exhibited favorable mechanical properties and met JIS A 1475 intensity building materials specifications (equilibrium moisture content >5 m 3 /m 3); therefore, HC-Al-MCM-41 can be used in several applications, especially as a humidity-conditioning material in construction.

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Reduction of tobacco smoke components yields by zeolites and synthesized Al-MCM-41

Cited by 25 publications

References 23 publications

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

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

Effect of Mesoporous Catalysts on the Mainstream Tobacco Smoke of 3R4F and 1R5F Reference Cigarettes

Synthesis of humidity‐conditioning mesoporous molecular sieves by using liquid‐crystal display waste glass

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