The Synergistic Effect of Hydroxylated Carbon Nanotubes and Ultrasound Treatment on Hierarchical HZSM-5 in the Selective Catalytic Upgrading of Biomass Derived Glycerol to Aromatics

Wang, Fei; Li, Qiaoqi; Chu, Xiaozhong; Zhu, Fuliang; Zhao, Pusu; Wu, Feiyue; Xiao, Guomin

doi:10.1007/s10562-021-03823-1

Cited by 3 publications

(4 citation statements)

References 68 publications

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“…Also, this catalyst possesses an appreciably high surface area and has been extensively used successfully to drive the reaction of methanol to aromatics. Studies on the glycerol to aromatics synthesis revealed that protonated ZSM-5 (H-ZSM-5) has been effective for BTX and BTEX production due to its acidity and shape-selective characteristics [32]. The H-ZSM-5 contains sinusoidal channels (0.51 × 0.5 nm) that are crossed with straight channels of the dimension (0.53 × 0.56 nm) with intersection channel of 0.9 nm size [33,34].…”

Section: Effect Of Hzsm-5 Acidity Metals Addition and Reaction Condit...mentioning

confidence: 99%

“…The tuning of the acid strength and concentration can be achieved by modifying the zeolite tetrahedral framework Al content of the H-ZSM-5 or exchanging the protons that compensate for the negative charge of the Al sites tetrahedral framework. The strategy adopted over the years to accomplish these are either post-synthesis modification (top-down) or in situ modification during synthesis (bottom-up) [26,32]. For instance, the synthesis of H-ZSM-5 with different Si/Al ratios is a common bottom-up strategy to evaluate the effect of acidity.…”

Section: Effect Of Catalyst Aciditymentioning

confidence: 99%

“…Hence, the aromatics yield decreases, whereas the gaseous product increases as shown in Figure 3 [30]. Most studies adopted 400°C as the optimum temperature to achieve the glycerol to aromatic conversion [18,32,50].…”

Section: Effect Of Temperaturementioning

confidence: 99%

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Catalytic Conversion of Glycerol to Bio-Based Aromatics

Okoye¹,

Duque-Brito²,

Lobata-Peralta³

et al. 2023

Ethanol and Glycerol Chemistry - Production, Modelling, Applications, and Technological Aspects

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Green application of biodiesel-derived glycerol will boost biodiesel production in terms of sustainability and economics. The glycerol to liquid fuels is a promising route that provides an additional energy source, which contributes significantly to energy transition besides biodiesel. This pathway could generate alkyl-aromatic hydrocarbons with a yield of ∼60%, oxygenates, and gases. MFI Zeolites (H-ZSM-5) catalysts are mainly used to propagate the aromatization pathway. This chapter presents the pathways, challenges, catalytic design, influences of catalyst acidity, metal addition, reaction condition, and catalysts deactivation on glycerol conversion to hydrocarbon fuels and aromatics. Studies revealed that time on stream, temperature, and weight hourly space velocity (range of 0.1–1 h−1) influences the benzene, toluene, and xylene BTX and benzene, toluene, ethylbenzene, and xylene BTEX yield. Acidity of the H-ZSM-5 could be tailored by metals, additives, and binders. Bronsted acidity promotes coke formation which results in reversible deactivation of the H-ZSM-5 catalyst. It is hoped that this study will promote intensified research on the use of glycerol for purposes of fuel generating and valuable products.

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Section: Effect Of Hzsm-5 Acidity Metals Addition and Reaction Condit...mentioning

confidence: 99%

Section: Effect Of Catalyst Aciditymentioning

confidence: 99%

See 1 more Smart Citation

Catalytic Conversion of Glycerol to Bio-Based Aromatics

Okoye¹,

Duque-Brito²,

Lobata-Peralta³

et al. 2023

Ethanol and Glycerol Chemistry - Production, Modelling, Applications, and Technological Aspects

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“…28,29 Nevertheless, there is an incentive to increase the state-ofthe-art catalyst performance for glycerol to aromatics (GTA) to enhance the chance of success for industrial implementation. Considerable efforts have been made on tailoring the properties of the H-ZSM-5 zeolite (e.g., Lewis/Brønsted acidity, microporosity, crystallinity, and hydrophilicity) by modification with various metals (such as Zn, 30 Ga, 31 and Sn 32 ) and by using zeolites with hierarchical structures (e.g., via alkali treatment 33 or using templates 34 ).…”

Section: ■ Introductionmentioning

confidence: 99%

Enhanced Bio-BTX Formation by Catalytic Pyrolysis of Glycerol with In Situ Produced Toluene as the Cofeed

Wang,

Kramer,

Yan

et al. 2024

ACS Sustainable Chem. Eng.

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The catalytic coconversion of glycerol and toluene (93/7 wt %) over a technical H-ZSM-5/Al 2 O 3 (60−40 wt %) catalyst was studied, aiming for enhanced production of biobased benzene, toluene, and xylenes (bio-BTX). When using glycerol/toluene cofeed with a mass ratio of 93/7 wt %, a peak BTX carbon yield of 29.7 ± 1.1 C.% (at time on stream (TOS) of 1.5−2.5 h), and an overall BTX carbon yield of 28.7 C.% (during TOS of 8.5 h) were obtained, which are considerably higher than those (19.1 ± 0.4 C.% and 11.0 C.%) for glycerol alone. Synergetic effects when cofeeding toluene on the peak and overall BTX carbon yields were observed and quantified, showing a relative increase of 3.1% and 30.0% for the peak and overall BTX carbon yield (based on the feedstock). These findings indicate that the strategy of cofeeding in situ produced toluene for the conversion of glycerol to aromatics has potential to increase BTX yields. In addition, BTX production on the catalyst (based on the fresh catalyst during the first run for TOS of 8.5 h and without regeneration) is significantly improved to 0.547 ton ton −1 catalyst (excluding the 76% of toluene product that is 0.595 ton ton −1 catalyst for the recycle in the cofeed) for glycerol/toluene cofeed, which was 0.426 ton ton −1 catalyst for glycerol alone. In particular, this self-sufficient toluene product recycling strategy is advantageous for the production and selectivity (relative increase of 84.4% and 43.5% during TOS of 8.5 h) of biobased xylenes.

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Tailoring the impact of synthetic strategies on the catalytic upgrading of crude glycerol to produce bio-based aromatics in hierarchical HZSM-5

Wang

et al. 2023

Fuel

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The Synergistic Effect of Hydroxylated Carbon Nanotubes and Ultrasound Treatment on Hierarchical HZSM-5 in the Selective Catalytic Upgrading of Biomass Derived Glycerol to Aromatics

Cited by 3 publications

References 68 publications

Catalytic Conversion of Glycerol to Bio-Based Aromatics

Catalytic Conversion of Glycerol to Bio-Based Aromatics

Enhanced Bio-BTX Formation by Catalytic Pyrolysis of Glycerol with In Situ Produced Toluene as the Cofeed

Tailoring the impact of synthetic strategies on the catalytic upgrading of crude glycerol to produce bio-based aromatics in hierarchical HZSM-5

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