Acidic ionic liquid catalyzed liquefactions of corn cobs and switchgrass in acetone: Analysis of bio-oils using LC-MS and GC-MS

Amarasekara, Ananda S.; Reyes, Cristian D. Gutierrez

doi:10.1016/j.jaap.2019.104752

Cited by 11 publications

(5 citation statements)

References 44 publications

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“…The analysis was performed with an HP 6890 GC system coupled with a 5973 mass selective detector. The area percentage of the spectra of the detected components was used to semiquantitatively evaluate the composition of the liquid residue, , which was obtained by calculating the percentage of the peak areas of the individual compounds over the total peak area in a total ion chromatogram (TIC).…”

Section: Methodsmentioning

confidence: 99%

Supercritical Water Gasification of Lignin and Cellulose Catalyzed with Co-precipitated CeO₂–ZrO₂

Chen

Xie

et al. 2021

Energy Fuels

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Lignin and cellulose were gasified at 500 and 600 °C in supercritical water over co-precipitated CeO2–ZrO2 catalyst. The addition of CeO2–ZrO2 improved the gasification efficiency and hydrogen production, and the catalytic effect was more significant at lower temperatures. The H2 yield from cellulose gasification at 500 °C increased by over 2.5 times to 8.50 mol/kg with the presence of CeO2–ZrO2. The gas chromatography-mass spectrometry (GC-MS) analysis showed that the catalyst reduced the content of cyclopentenone and furan derivatives in the aqueous product but increased the content of refractory phenols. We characterized the fresh and the used catalysts with H2-temperature-programmed reduction (H2-TPR), X-ray diffraction (XRD), and scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDS) analysis, showing that CeO2 was the main active component, which catalyzed gasification through redox reactions. ZrO2 enhanced the catalytic activity of CeO2 by lowering the reduction temperature in hydrogen, increasing the dispersion of CeO2, and facilitating H2 adsorption on the catalyst surface.

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Section: Methodsmentioning

confidence: 99%

Supercritical Water Gasification of Lignin and Cellulose Catalyzed with Co-precipitated CeO₂–ZrO₂

Chen

Xie

et al. 2021

Energy Fuels

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“…However, other solvents were selected by this research group, namely ethylene glycol, being the first use of ethylene glycol as a reaction medium ever reported in the liquefaction of cellulose. These reaction mediums (ethylene glycol [3] and acetone [16]) have been proven to lead to greater yields of cellulose depolymerization products as well as cross-reactions of these products with the solvent. In the work of Amarasekara and Wiredu [3], [SO 3 Hpmim][Cl] and [SO 3 Hbmim][Cl] were used as catalysts in the liquefaction of cellulose in ethylene glycol at 180 • C. These conditions led to a simple mixture.…”

Section: Herbaceous and Agricultural Biomassmentioning

confidence: 99%

“…Amarasekara and Deng [16] have tested other types of biomass, untreated switchgrass in acetone, to produce hydrophobic liquefied oils. These catalysts converted 39.5% and 31.75% of switchgrass at 120 • C after 3.5 h. The highest biomass conversions were obtained by Amarasekara and Reys [17] in their work with corn cobs and switchgrass.…”

Section: Herbaceous and Agricultural Biomassmentioning

confidence: 99%

The Role of Ionic Liquids on Biomass Liquefaction—A Short Review of the Recent Advances

et al. 2021

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Biomass is recognised as one of the most attractive feedstocks among the alternative resources, having a high potential for the sustainable production of valuable chemicals and biofuels. Due to its abundance, convenience, carbon neutrality and eco-friendliness, biomass is believed to positively impact the current environmental crisis caused by the extensive use of petroleum resources. For this reason, the search for processes that can convert this feedstock, resolving some inherent drawbacks, is needed. Biomass liquefaction using ionic liquids (ILs) as catalysts has received appreciable attention in renewable fuels and chemicals production. With the potential for a substantial number of anion and cation pairings, ILs can be an attractive medium towards reusability and sustainability for these processes due to the unique and tunable combinations of their functional groups-and, therefore, their properties. In this review, several studies using ILs in biomass liquefaction are compared and discussed. With a particular emphasis on the last five years, advantages and disadvantages will be discussed using this class of liquids addressing essential issues such as yields, reusability and conversion, among others.

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“…Similarly, Cristino et al have assessed the role of ILs in biomass liquefaction . Amarasekara and Reyes have reported the usage of 1-(3-propylsulfonic)-3-methylimidazolium chloride and 1-(4-butylsulfonic)-3-imidazolium chloride ILs as catalysts for liquefaction of corn cob . Thus, integration of ILs can be a good choice for the liquefaction of biomass and MSW feedstocks.…”

Section: Introductionmentioning

confidence: 99%

“…38 Amarasekara and Reyes have reported the usage of 1-(3-propylsulfonic)-3-methylimidazolium chloride and 1-(4-butylsulfonic)-3-imidazolium chloride ILs as catalysts for liquefaction of corn cob. 39 Thus, integration of ILs can be a good choice for the liquefaction of biomass and MSW feedstocks. In our previous study, we have reported the imidazole-based IL-mediated CTL process for the liquefaction of organic biodegradable MSW to produce 80% CTL-Oil.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Liquefaction Kinetics of the PolyE-IL-Catalyzed Catalytic Thermo Liquefaction Process for Organic Biodegradable Municipal Solid Waste

et al. 2022

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The catalytic thermo liquefaction (CTL) process with integration of the PolyE-IL catalyst has the specific advantages of high conversion, no char production, and nonstringent operating conditions. However, the study of the liquefaction kinetics is one of the most important parameters to elucidate the mechanism of the CTL process and a guide for process scale-up. The present manuscript demonstrates the elucidation of the liquefaction kinetics of a PolyE-IL-catalyzed CTL process for CTL of organic biodegradable waste. The CTL for different feedstocks showed >80% feed conversion at 120 °C in 120 min and under 10 bar inert gas pressure. Thus, both pressure and reflux reaction condition approaches for CTL were followed to investigate prevailing reactor parameters for liquefaction. However, the influences of reactor operating conditions with variable MSW slurry concentrations, temperatures, and times were inspected. The lower slurry concentration (<3 wt %) did not show the effect of the mode of operation, but the efficacy of liquefaction was reduced in the reflux mode of operation at a higher slurry concentration (<5 wt %). The reaction temperature of >90 °C was found to be efficient to achieve a maximum conversion, 75 and 70% at pressure and reflux modes of operation, respectively. Moreover, it was observed that a reaction time of at least 10 min was sufficient to achieve at least 75% conversion, although a longer reaction time increased the degree of liquefaction. According to liquefaction behavior of MSW, the plausible reaction routes were proposed. The first-order reaction was shown in the kinetic analysis to have an activation energy of 411.5 J/g and a frequency factor of 9.3 min −1 . The lowest contact time was advantageous for increased liquefaction of MSW. Thus, the present study offers an in-depth understanding of the CTL reaction pathways and the liquefaction kinetics, which can be useful for developing scalable and economically viable CTL processes.

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Acidic ionic liquid catalyzed liquefactions of corn cobs and switchgrass in acetone: Analysis of bio-oils using LC-MS and GC-MS

Cited by 11 publications

References 44 publications

Supercritical Water Gasification of Lignin and Cellulose Catalyzed with Co-precipitated CeO₂–ZrO₂

Supercritical Water Gasification of Lignin and Cellulose Catalyzed with Co-precipitated CeO₂–ZrO₂

The Role of Ionic Liquids on Biomass Liquefaction—A Short Review of the Recent Advances

Investigation of the Liquefaction Kinetics of the PolyE-IL-Catalyzed Catalytic Thermo Liquefaction Process for Organic Biodegradable Municipal Solid Waste

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Acidic ionic liquid catalyzed liquefactions of corn cobs and switchgrass in acetone: Analysis of bio-oils using LC-MS and GC-MS

Cited by 11 publications

References 44 publications

Supercritical Water Gasification of Lignin and Cellulose Catalyzed with Co-precipitated CeO2–ZrO2

Supercritical Water Gasification of Lignin and Cellulose Catalyzed with Co-precipitated CeO2–ZrO2

The Role of Ionic Liquids on Biomass Liquefaction—A Short Review of the Recent Advances

Investigation of the Liquefaction Kinetics of the PolyE-IL-Catalyzed Catalytic Thermo Liquefaction Process for Organic Biodegradable Municipal Solid Waste

Contact Info

Product

Resources

About

Supercritical Water Gasification of Lignin and Cellulose Catalyzed with Co-precipitated CeO₂–ZrO₂

Supercritical Water Gasification of Lignin and Cellulose Catalyzed with Co-precipitated CeO₂–ZrO₂