Conventional and Catalytic Pyrolysis of Pinyon Juniper Biomass

Yathavan, Bhuvanesh

doi:10.26076/6e69-74f3

Cited by 3 publications

(7 citation statements)

References 98 publications

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“…Since the FRM particles used for this study were smaller than those used by Agblevor et al (180 < d p < 450 μm), the specific surface area of the FRM (125 < d p < 180 μm) was measured using a Quantachrome Monosorb (Quantachrome Instruments, Boynton Beach, FL). The surface area of the HZSM-5 catalyst was also measured to confirm what was reported by Yathavan …”

Section: Methodssupporting

confidence: 81%

“…Briefly, the FRM is an alkaline catalyst with pore size and pore volume of 10 Å and 0.3 cm 3 /g, respectively, and has an acidity of 0.095 mmol/g . The HZSM-5 is an acidic catalyst (acidity: 2.39 mmol/g) . The pore size and pore volume of the HZSM-5 were not measured for this study.…”

Section: Resultsmentioning

confidence: 99%

“…The difference in the catalytic pathways between the FRM and HZSM-5 could be due to the difference in acidity and pore size. The HZSM-5 catalyst used in this study has a surface area of 121 m 2 /g and an acidity of 2.390 mmol/g, whereas the FRM is an alkaline catalyst (pH 9.5) that has a surface area of 101 m 2 /g and an acidity of 0.095 mmol/g …”

Section: Resultsmentioning

confidence: 99%

“…The FRM and HZSM-5 catalysts used in this study were from the same batches used by Agblevor et al . and Yathavan, respectively. Prior to each experiment, the sand and the catalysts were dried at 105 °C overnight and sieved to a particle size of 125 < d p < 180 μm.…”

Section: Methodsmentioning

confidence: 99%

“…The main product of the fast pyrolysis of lignocellulosic biomass is a liquid product called biooil. This liquid has high viscosity, high oxygen content, high water content, and low stability. ,, Catalytic pyrolysis can improve the properties of the biooil by converting the reactive species in the latter to either gases consisting mainly of C 1 –C 5 hydrocarbons alongside carbon monoxide and carbon dioxide or shorter chain liquid organic molecules . Several kinetic studies have been conducted for the catalytic pyrolysis of different types of lignocellulosic biomass to develop potential catalysts that can lower the activation energy required to convert the biomass and improve the quality of biooil produced from its catalytic pyrolysis.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Kinetic and Pyrolytic Studies of d-Glucose Using Formulated Red Mud, Sand, and HZSM-5

Abdellaoui

Agblevor

2023

Energy Fuels

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The catalytic pyrolysis of D-glucose (DG) was conducted using a thermogravimetric analyzer (TGA) and formulated red mud (FRM) as the catalyst to determine the kinetic parameters of DG decomposition in the presence of the catalyst. The FRM reduced the overall activation energy (45.58−87.35 KJ/mol) of DG conversion compared to sand (45.27−112.00 KJ/mol). The trend of the frequency factor (A) for the catalytic pyrolysis (first-order reaction: 78.1−1.14 × 10 8 s −1 ) and non-catalytic pyrolysis (firstorder reaction: 7.10−2.08 × 10 7 s −1 ) of DG was different, which indicated different reaction mechanisms. Compared to the sand and HZSM-5 catalyst, the FRM altered the thermal decomposition profile of the DG and promoted its decomposition at lower reaction temperatures. The thermogravimetric analyses showed that at 260 °C, the FRM catalyst converted more DG (50% conversion) than the HZSM-5 (44% conversion) and sand (35% conversion), which was in agreement with its activation energy. Furthermore, the DG decomposition was studied in a fixed-bed reactor using catalytic and non-catalytic pyrolysis conditions. The FRM promoted the formation of low-molecular-weight compounds (acetic acid and formic acid, CO 2 , formaldehyde, and CO) and hindered the formation of furans. The HZSM-5 catalyst promoted the formation of furans.

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Section: Methodssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative Kinetic and Pyrolytic Studies of d-Glucose Using Formulated Red Mud, Sand, and HZSM-5

Abdellaoui

Agblevor

2023

Energy Fuels

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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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Catalytic Fast Pyrolysis of Whole Field Pennycress Biomass

Kidane¹

2015

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Conventional and Catalytic Pyrolysis of Pinyon Juniper Biomass

Cited by 3 publications

References 98 publications

Comparative Kinetic and Pyrolytic Studies of d-Glucose Using Formulated Red Mud, Sand, and HZSM-5

Comparative Kinetic and Pyrolytic Studies of d-Glucose Using Formulated Red Mud, Sand, and HZSM-5

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

Catalytic Fast Pyrolysis of Whole Field Pennycress Biomass

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