The effect of mesoporosity in the reaction of vinyl acetate and isoamyl alcohol catalyzed by H-ZSM-5 zeolites based on natural Perlite

Corregidor, Pablo Fernando; Tolaba, Ebelia Noemi; Acosta, Delicia Ester; Destéfanis, Hugo Alberto

doi:10.1016/j.apcata.2020.117717

Cited by 6 publications

(4 citation statements)

References 46 publications

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“…The purpose of Py-FTIR is to examine the effects of the different types of acid strengths of hierarchical ZSM-5. − Figure S1 shows three absorption peaks in the range of 1400–1600 cm –1 in the Z-Parent and hierarchical Z-0.2M. The absorption peaks at 1455 and 1490 cm –1 can be attributed to the absorption of pyridine molecules by Lewis acid sites.…”

Section: Resultsmentioning

confidence: 99%

Hydrothermal Catalytic Upgrading of Model Compounds of Algae-Based Bio-Oil to Monocyclic Aromatic Hydrocarbons over Hierarchical HZSM-5

Lü

Gong

Lu³

et al. 2020

Ind. Eng. Chem. Res.

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Stearic acid (SA) and hexadecanamide (HA), which are model compounds of algae-based bio-oil, were used to produce aromatics for catalysis by a hierarchical HZSM-5 zeolite under hydrothermal conditions. The results showed that the hierarchical HZSM-5 zeolite was more active than the traditional HZSM-5 parent zeolite. The molar yield of toluene, ethylbenzene, and xylene could reach (1.14 ± 0.05) × 100% (normal weight percentage yield = 40.77 wt %) when the reaction temperature was 400 °C. Moreover, the catalyst was stable and recyclable under hydrothermal conditions. Besides, the addition of acetic acid remarkably improved the deoxygenation (or denitrification) and aromatization efficiencies of the SA and HA mixture by more than 25%. This study provides a feasible approach to the valorization of algal biomass and the production of aromatics.

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Section: Resultsmentioning

confidence: 99%

Hydrothermal Catalytic Upgrading of Model Compounds of Algae-Based Bio-Oil to Monocyclic Aromatic Hydrocarbons over Hierarchical HZSM-5

Lü

Gong

Lu³

et al. 2020

Ind. Eng. Chem. Res.

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“…These findings underscore the suitability of H-Beta zeolites with smaller sizes and suitable Bro̷nsted acid site densities (corresponding to high Si/Al ratios) as ideal catalysts for the conversion of FA to BFM. To further confirm the role of Bro̷nsted acid in facilitating this reaction, we conducted a control experiment involving the alkylation of FUR and FA in the presence of either 2,6-lutidine or pyridine (Figure c), under otherwise identical reaction conditions. − It is worth noting that pyridine can interact with both Bro̷nsted and Lewis acid sites through protonation and coordination, whereas 2,6-lutidine selectively interacts with Bro̷nsted acid sites due to steric hindrance. As shown in Figure d, a substantial decrease in BFM yield was observed in both cases, underscoring the indispensable role of Bro̷nsted acid sites in promoting direct alkylation.…”

Section: Resultsmentioning

confidence: 99%

Hydrophobic Nanosized H-Beta Catalysis for Biomass Furanic Compound Valorization

Wang,

Sun,

Zhao

et al. 2023

J. Phys. Chem. C

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The depletion of crude oil reserves and escalating concerns about global warming have intensified the quest for sustainable alternatives in the production of fuels and fine chemicals. In this context, the selective transformation of renewable biomass-derived furanic compounds into biofuels and valuable chemicals represents a promising avenue. This research explores the catalytic potential of hydrophobic nanosized H-Beta zeolites in the alkylation of furan and its derivatives. By systematically investigating the influencing factors, including acid strength and hydrophobicity, we revealed that zeolitebased catalysts with moderate acid strengths exhibit superior efficacy in promoting alkylation reactions. Notably, the optimized catalyst, TEFSfunctionalized pyridine-protected nanosized H-Beta-180 (Nano-H-Beta-180-Py-TEFS), demonstrates exceptional selectivity and efficiency in the production of bifurfurylfuran (BFFF), a key precursor for nextgeneration biofuels. Furthermore, the successful implementation of continuous-flow processing enhances the scalability and efficiency of these catalytic transformations, making them highly promising for large-scale applications. This work not only contributes to the development of sustainable chemical processes but also offers a practical solution for the alkylation of furanic compounds, addressing the growing demand for ecofriendly fuels and chemicals.

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“…51 The number of Brønsted and Lewis acid sites is calculated based on the peak area and were summarized in Table 1. 52,53 The hydrothermal condition affected the distribution of Brønsted and Lewis acid sites in the ZSM-5. 54 The number of Lewis acid sites reduced at a longer hydrothermal time, whereas the Brønsted acid sites number were approximately similar for all catalysts.…”

Section: Acidity Studymentioning

confidence: 99%

Optimization of hierarchical ZSM-5 structure from kaolin as catalysts for biofuel production

et al. 2023

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The effect of mesoporosity in the reaction of vinyl acetate and isoamyl alcohol catalyzed by H-ZSM-5 zeolites based on natural Perlite

Cited by 6 publications

References 46 publications

Hydrothermal Catalytic Upgrading of Model Compounds of Algae-Based Bio-Oil to Monocyclic Aromatic Hydrocarbons over Hierarchical HZSM-5

Hydrothermal Catalytic Upgrading of Model Compounds of Algae-Based Bio-Oil to Monocyclic Aromatic Hydrocarbons over Hierarchical HZSM-5

Hydrophobic Nanosized H-Beta Catalysis for Biomass Furanic Compound Valorization

Optimization of hierarchical ZSM-5 structure from kaolin as catalysts for biofuel production

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