Catalytic pyrolysis of woody oil over SiC foam-MCM41 catalyst for aromatic-rich bio-oil production in a dual microwave system

Yu, Zhenting; Jiang, Lin; Wang, Yunpu; Li, Yanzhi; Ke, Linyao; Yang, Qi; Peng, Yujie; Xu, Jiamin; Dai, Leilei; Wu, Qiuhao; Liu, Yuhuan; Ruan, Roger; Xia, Dingguo; Jiang, Li

doi:10.1016/j.jclepro.2020.120179

Cited by 39 publications

(50 citation statements)

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“…Biomass can be converted either biologically or thermochemically to biofuels in solid, liquid, or gaseous forms. In fast pyrolysis, biomass is decomposed under oxygen-free environment into multiple products, including biochar, bio-oil, and non-condensable gases, over a very short reaction time ( Chandrasekaran and Hopke, 2012 ; Rezaei et al, 2014 ; Wang et al, 2019 ; Sun et al, 2020 ; Yu et al, 2020 ). The challenge remains on how to upgrade pyrolysis bio-oil to drop-in liquid fuels due to their high oxygen content, high viscosity, and acidity.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Catalyst Mixtures on Biomass Catalytic Pyrolysis

Mohamed

Ellis

Kim

et al. 2020

Front. Bioeng. Biotechnol.

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This paper studied the synergistic effects of catalyst mixtures on biomass catalytic pyrolysis in comparison with the single catalyst in a microwave reactor and a TGA. In general, positive synergistic effects were identified based on increased mass loss rate, reduced activation energy, and improved bio-oil quality compared to the case with a single catalyst at higher catalyst loads. 10KP/10Bento (a mixture of 10% K3PO4 and 10% bentonite) increased the mass loss rate by 85 and 45% at heating rates of 100 and 25°C/min, respectively, compared to switchgrass without catalyst. The activation energy for 10KP/10Bento and 10KP/10Clino (a mixture of 10% K3PO4 and 10% clinoptilolite) was slightly lower or similar to other catalysts at 30 wt.% load. The reduction in the activation energy by the catalyst mixture was higher at 100°C/min than 25°C/min due to the improved catalytic activity at higher heating rates. Synergistic effects are also reflected in the improved properties of bio-oil, as acids, aldehydes, and anhydrosugars were significantly decreased, whereas phenol and aromatic compounds were substantially increased. 30KP (30% K3PO4) and 10KP/10Bento increased the content of alkylated phenols by 341 and 207%, respectively, in comparison with switchgrass without catalyst. Finally, the use of catalyst mixtures improved the catalytic performance markedly, which shows the potential to reduce the production cost of bio-oil and biochar from microwave catalytic pyrolysis.

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Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Catalyst Mixtures on Biomass Catalytic Pyrolysis

Mohamed

Ellis

Kim

et al. 2020

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

show abstract

“…Biomass can be converted either biologically or thermochemically to biofuels in solid, liquid, or gaseous forms. In fast pyrolysis, biomass is decomposed under oxygen-free environment into multiple products, including biochar, bio-oil, and non-condensable gases, over a very short reaction time (Chandrasekaran and Hopke, 2012;Rezaei et al, 2014;Wang et al, 2019;Sun et al, 2020;Yu et al, 2020). The challenge remains on how to upgrade pyrolysis bio-oil to drop-in liquid fuels due to their high oxygen content, high viscosity, and acidity.…”

Section: Introductionmentioning

confidence: 99%

“…Several techniques have been investigated, including the use of catalytic materials and microwave heating, to enhance the quality of bio-oil and biochar (Budarin et al, 2009;Luque et al, 2012;Bundhoo, 2018;State et al, 2019;Hua et al, 2020). Catalytic fast pyrolysis has been found to be effective in improving the quality of bio-oil (Carlson et al, 2011;Rezaei et al, 2014;Bundhoo, 2018;Song et al, 2020;Yu et al, 2020). Given that high oxygen content of bio-oil can contribute to high acidity, viscosity, and reduced heating value of bio-oil, deoxygenation is essential for improving bio-oil quality and stability.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Microwave-assisted pyrolysis has been proposed as an alternative heating method to increase the heating rate, thereby improving the quality of bio-oil, biochar, and syngas (Miura et al, 2004;Budarin et al, 2009;Wan et al, 2009;Lin et al, 2012;State et al, 2019;Yu et al, 2020). It is found that biochar generated from microwave-assisted pyrolysis has a greater specific surface area and pore volume than obtained from conventional fast pyrolysis because of the unique heating mechanism of microwave radiation, in which particles are directly heated (Domínguez et al, 2007;Luque et al, 2012;Yu et al, 2020). Tripotassium phosphate (K 3 PO 4 ), clinoptilolite, and bentonite, which were previously investigated for catalytic pyrolysis, showed improvements in bio-oil quality as reflected by the decreased acidity, viscosity, and the increased fractions of aromatics and hydrocarbons, which are beneficial for the production of liquid biofuels (Pütun et al, 2009;Lu et al, 2013;Veses et al, 2015;Mohamed et al, 2016aMohamed et al, , 2019a.…”

Section: Introductionmentioning

confidence: 99%

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