Boosting production of useful chemicals and micro-mesopores biochar from in situ catalytic pyrolysis of cellulose with red mud

Yang, Xinyu; Liu, Zechun; Zhang, Jianping; Zheng, Jie; Chen, Jinlei; Liu, Qian; Li, Xingyong; Wang, Qi; Li, Shuirong; Ye, Yueyuan; Wang, Duo; Xie, Wei; Liu, Jiangsheng; Lan, Hongqiao; Wang, Jiaofei; Wang, Dechao

doi:10.1007/s13399-022-02778-6

Cited by 6 publications

(4 citation statements)

References 45 publications

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“…It is worth mentioning that the final weight of the CE−HZSM-5 was lower than that of the CE− sand and CE−FRM, which was probably due to the initial weight loss of the physisorbed water on the HZSM-5. The effect of red mud on the TGA curve of CE was in agreement with the study of Yang et al52 3.3. Catalytic Pyrolysis of CE: Effect of the Pyrolysis Medium.…”

supporting

confidence: 92%

“…The FRM-catalyzed pyrolysis promoted the production of CO 2 by 67.8% and decreased the production of CO by 11.7%. Red mud has been reported to produce more CO 2 than CO during the pyrolysis of CE and biomass. , This was believed to be due to the fact that the lattice oxygen in the Fe 2 O 3 of the FRM participated in the pyrolysis reaction by migrating into the liquid and gas products, which resulted in the increase of the CO 2 as well as the water yields . Furthermore, CaO has been reported to promote ketonization on its surface as well as the formation of acetate, which can decompose into acetone, CO 2 , reactions formation of CO 2 , acetone, and water. , In contrast, the HZSM-5-catalyzed pyrolysis of CE promoted the production of CO by 53.4% and decreased the production of CO 2 by 1.9%.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Catalytic Pyrolysis of Cellulose Using Formulated Red Mud, Sand, and HZSM-5

Abdellaoui,

Agblevor,

Haghighi Mood

2023

Energy Fuels

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The catalytic pyrolysis of microcrystalline cellulose (CE) using formulated red mud (FRM) and HZSM-5 catalysts was conducted in a fluidized bed reactor at 400 °C. Both catalysts promoted the conversion of CE. The FRM promoted the formation of organic liquids and pyrolytic water, while the HZSM-5 catalyst promoted the pyrolytic water and the formation of pyrolysis noncondensable gases (PNCGs). The electrostatic precipitator (ESP) biooil (25.8 ± 2.54 wt %) from the CE-FRM consisted mainly of levoglucosan (LGA, 68.60 area %), cyclic ketones (CKs, 2.91 area%), and aromatics (1.38 area%), whereas the HZSM-5 biooil consisted of levoglucosan (82.27 area%). The major oxides of the FRM (i.e., Al 2 O 3 and Fe 2 O 3 ) were used during the pyrolysis of CE. Both catalysts promoted the formation of pyrolytic water and PNCGs. Compared to sand, the Fe 2 O 3 promoted the formation of anhydrous sugars by about 6%, aromatics by more than 3-fold and CKs by more than 2-fold, whereas the Al 2 O 3 promoted the formation of noncyclic oxygenates (NCOs) by more than 3-fold, furans by more than 3-fold, CKs by more than 5-fold, and aromatics by more than 28-fold. During the CE-FRM pyrolysis, larger particle size resulted in higher char/coke and pyrolytic water yields and lower organic liquid and PNCGs. This was due to the longer residence time of LGA in the larger particles where further dehydration and charring occur. The pyrolysis of D-glucose (DG) over the FRM catalyst resulted in higher char/coke and water yields and lower organic liquid and PNCGs compared to the catalytic pyrolysis of CE over FRM. Compared to the CE-FRM biooil, the DG-FRM biooil had higher furans content and lower yields of anhydrous sugars and aromatics. The longer residence time of LGA produced during the DG-FRM pyrolysis in the hot zone resulted in its further dehydration and polymerization to form char.

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supporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Catalytic Pyrolysis of Cellulose Using Formulated Red Mud, Sand, and HZSM-5

Abdellaoui,

Agblevor,

Haghighi Mood

2023

Energy Fuels

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“…The introduction of catalysts could obtain the product with higher yields and better quality at lower temperatures. Nevertheless, the cost of catalysts should be taken into consideration and most of the studies regarding catalytic pyrolysis are still in the lab scale, and attention should be paid to this aspect in future studies (Yang et al 2022). Gasification is often performed at large scales thus producing several tons of biochar per day as a co-product.…”

Section: Cost Factormentioning

confidence: 99%

Advances in preparation, application in contaminant removal, and environmental risks of biochar-based catalysts: a review

Yang

Dai

Zhao

et al. 2022

Biochar

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As a carbon-rich material produced by pyrolysis of biomass, biochar features low cost, large specific surface area, and widely available feedstocks based on the functional diversity and environmental-friendly properties, it has received increasing attention in the fields of pollutant removal due to three win–win effects of water remediation, carbon sequestration and reutilization of wastes. To design excellent biochar-based catalysts for environmental applications, one must understand recent advances in the catalysts for contaminant removal. This review focuses on the current application of biochar-based catalysts in redox systems, Fenton-like systems, sonocatalytic systems and photocatalytic systems. Besides in-depth discussion in effects of preparation conditions on physicochemical characteristics of biochars, the review supplements new preparation technologies of biochar and biochar-based catalysts. Most importantly, the advantages/shortcomings, catalysis mechanisms, as well as the pollutant removal ability of different types of biochar-based catalysts are discussed. The environmental risks of the catalyst applications are also elaborated on. Future research on biochar-based catalyst production and its environmental applications is discussed. The review provides a good overview of the current advances of biochar-based catalysts in pollutant control and the futureresearch directions. Graphical Abstract

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Two-step strategy for the comprehensive utilization of tobacco stem

Yang

Liu

et al. 2022

Chem. Pap.

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Boosting production of useful chemicals and micro-mesopores biochar from in situ catalytic pyrolysis of cellulose with red mud

Cited by 6 publications

References 45 publications

Catalytic Pyrolysis of Cellulose Using Formulated Red Mud, Sand, and HZSM-5

Catalytic Pyrolysis of Cellulose Using Formulated Red Mud, Sand, and HZSM-5

Advances in preparation, application in contaminant removal, and environmental risks of biochar-based catalysts: a review

Two-step strategy for the comprehensive utilization of tobacco stem

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