Fast Pyrolysis of Cellulose and the Effect of a Catalyst on Product Distribution

Sun, Tao; Zhang, Lu; Yang, Yuhao; Li, Yanling; Ren, Suxia; Dong, Lili; Lei, Tingzhou

doi:10.3390/ijerph192416837

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…To the best of our knowledge, only one study reported that HZSM-5 promoted the formation of carbohydrates. However, they did not investigate or explain the reaction mechanism behind such a finding …”

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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Section: Resultsmentioning

confidence: 99%

“…However, they did not investigate or explain the reaction mechanism behind such a finding. 108 Maliekkal et al explained the importance of the hydroxyl group of glucose in aiding LGA formation during CE pyrolysis. They explained that the breakage of the α-glycosidic bond of CE gave a glucose molecule and an epoxy end.…”

Section: Ce Vs D-glucosementioning

confidence: 99%

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

Abdellaoui,

Agblevor,

Haghighi Mood

2023

Energy Fuels

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Sustainable energy production from waste paper: A CuMgAlOx-catalyzed approach to alcohol fuels

Yang,

Wang,

Bai

et al. 2024

Fuel

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Influences of Reaction Temperature, Duration, and Catalysts on Hemicellulose Pyrolysis Products

Sun,

Li,

Wang

et al. 2023

j biobased mat bioenergy

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Fast pyrolysis experiments were conducted on xylan (XY) using pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) to explore influences of the reaction temperature, duration, and catalysts on product distributions from XY pyrolysis. The results show that temperature and duration can notably influence the classes and yields of compounds generated by the pyrolysis of hemicellulose. Pyrolysis at 500–600 °C for a duration of 5–20 s is conducive to improving the yields of condensable volatiles from hemicellulose pyrolysis. In all catalytic experiments, when taking HZSM-5 as the catalyst, alcohols (37.31%), carbohydrates (27.61%), and hydrocarbons (3.71%) have the highest contents while aldehydes (9.76%), ketones (2.20%), esters (0%), furans (0%), and N-compounds (4.09%) possess the lowest contents. MCM-41 promotes production of aldehydes (59.94%), acids (5.11%), ketones (6.92%), phenols (0.30%), ethers (0.61%), and N-compounds (18.70%) while inhibiting generation of alcohols (1.21%) and carbohydrates (3.79%). ZrO2 is conducive to increasing the content of furans (2.23%) while decreasing the content of acids (0.64%).

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Fast Pyrolysis of Cellulose and the Effect of a Catalyst on Product Distribution

Cited by 5 publications

References 35 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

Sustainable energy production from waste paper: A CuMgAlOx-catalyzed approach to alcohol fuels

Influences of Reaction Temperature, Duration, and Catalysts on Hemicellulose Pyrolysis Products

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