Synthesis and Characterization of Bio-pitch from Bio-oil

Lu, Ying; Li, Dazhi; Picard, Donald; Mollaabbasi, Roozbeh; Ollevier, Thierry; Alamdari, Houshang

doi:10.1021/acssuschemeng.0c03903

Cited by 21 publications

(33 citation statements)

References 35 publications

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“…A detailed description of the properties of bio-oil, CTP, and calcined petroleum coke for this study can be found elsewhere. 4,6 Synthesis of Biopitch. The biopitch samples were synthesized from bio-oil using vacuum distillation process.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…The biopitch samples were synthesized from bio-oil using vacuum distillation process. 4 Different quantities of biochar powders (0, 0.5, 1.0, 1.5, 3.0, 6.0, and 9.0 wt %) were mixed with bio-oil prior to vacuum distillation. The mixture of bio-oil and biochar was heated from room temperature to the desired soaking temperature (180 °C) with a heating rate of 5 °C/min and then maintained for 3 h at this temperature under a reduced pressure (54 Torr) and slowly allowed to cool to room temperature.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…The corresponding detailed description of the characterization for these techniques was presented elsewhere. 4,6 Fabrication and Characterization of Biocarbon Anode Samples. BP-9 was chosen as the best biopitch to prepare anode samples.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…However, it was reported that the biopitch exhibits lower coking value and quinoline-insoluble (QI) content than does CTP. 4 The QI is defined as the carbon black-like material, which is essentially the solid particles, insoluble in quinoline. A high coking value of pitch results in low porosity and highdensity anodes, thus improving the anode quality.…”

Section: ■ Introductionmentioning

confidence: 99%

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Biochar as an Additive to Modify Biopitch Binder for Carbon Anodes

Hussein

Lauzon-Gauthier

et al. 2021

ACS Sustainable Chem. Eng.

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Looking for alternative materials to coal-tar pitch (CTP), as a binder in anode manufacturing, in aluminum production is of great interest. Such a material should be able to mitigate the cost and health issues without decreasing the carbon anode quality. Biopitch (BP) could be considered as a potential candidate. Previous studies show that biomass-based pitch has generally a low coking value compared to that of CTP, which might negatively affect its properties as a binder in carbon anodes. To increase its coking value, biopitch was modified by using additives. A solid bio-based material, namely, biochar, was considered as an additive. The prepared biopitch samples, containing different quantities of biochars, were analyzed for their softening point (SP), QI content, coking value (CV), molecular weight distribution, viscosity, surface tension, chemical groups, and surface composition, as well as their wettability with coke particles. The differences in texture and topography of different pitches, as well as the interface between pitch and aggregate particles in sessile drop after wettability test, were studied. The results revealed that increasing the quantities of biochars in biopitch increases their coking value, QI content, density, viscosity, and softening point. Furthermore, biochar addition only shows a minor influence on surface tension and molecular weight distribution of biopitch. An optimum amount (9.0 wt %) of biochar addition in biopitch could therefore be beneficial in anode formulation while using biopitch as a binder, compared to those of the reference anodes. The properties of the laboratory anodes (green/baked density, air/CO2 reactivity, compressive strength and electrical resistivity, carbon structure of the carbonized pitch) were investigated. Addition of biochar into biopitch could reduce the overall consumption of biopitch in the carbon anode formulation.

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Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biochar as an Additive to Modify Biopitch Binder for Carbon Anodes

Hussein

Lauzon-Gauthier

et al. 2021

ACS Sustainable Chem. Eng.

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“…The softening point and the density of the pitch are 1.310 g cm −3 and 109 C, respectively. Note that more information about the physical properties of the pitch is available at Lu et al [42,43] It is worth mentioning that 178 C is the forming temperature in anode production [1] ; however, this temperature could vary between 165-185 C depending on the smelter. The other two temperatures (T = 166 and 190 C) are chosen to study the effects of temperature on the rheological properties of the materials.…”

Section: Rheological Characterization 21 | Rheological Properties Of ...mentioning

confidence: 99%

Effect of fine coke particles on rheological properties of the binder matrix of carbon anodes in aluminium production process

et al. 2021

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Aluminium production through the Hall-Héroult process relies on an extensive use of carbon anodes, which are originally made of coal tar pitch and fine and coarse carbon particles. During the forming process of green anodes, the mixture of the fine particles and the coal-tar pitch (i.e., the binder matrix) moves between the coarse particles and produces a uniform agglomerated paste. The efficiency of the forming process directly affects the final quality of the baked anode and consequently the efficiency of the Hall-Héroult process. The rheological properties of the binder matrix play a crucial role in the forming process. In this study, rotation and oscillation tests are used to study the effects of the fine particle concentration and temperature on the viscoelastic properties of the binder matrix. The

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Recent advances in liquid‐phase NMR of the coal‐derived products

Krivdin

2024

Magnetic Reson in Chemistry

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Present review focuses on the most recent advances in a liquid‐phase nuclear magnetic resonance (NMR) of the coal‐derived products—coal tar pitches, asphaltenes, and humic and fulvic acids, covering exclusively the results in the liquid‐phase NMR studies leaving apart an overwhelming amount of publications dealing with the solid‐state NMR investigations in this field (which are comprehensively reviewed elsewhere). Owing to the complexity of the coal‐derived products, their 1H and 13C NMR spectra consist of a number of overlapping signals belonging to different hydrocarbon types. Comprehensive studies of coal tar pitches, asphaltenes, and humic and fulvic acids by means of NMR over the past several decades revealed characteristic functional groups of those fractions together with spectral regions in which they resonate. Quantitative 1H and 13C NMR spectra characterize aromatic and saturated carbons spread over many structural moieties, which provides a solid guideline into molecular structure of the coal‐derived products. Nowadays, quantitative 13C NMR measurements yield information about a variety of structural parameters such as functional group distribution, aromaticity, degree of condensation of aromatic rings, and medium chain lengths together with many other more specific parameters. The structural NMR studies of coal and coal‐derived products are developing on a backdrop of a marked progress in computational NMR. At present, we are witnessing an unprecedentedly fast development of theoretical and computational methods in the field of NMR spectroscopy. Discussed in the present review are the most recent advances in the NMR studies of the processing products of peat, lignite or brown coal, anthracite or hard coal, and graphite in solution, like coal tar pitches, asphaltenes, and humic and fulvic acids.

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Synthesis and Characterization of Bio-pitch from Bio-oil

Cited by 21 publications

References 35 publications

Biochar as an Additive to Modify Biopitch Binder for Carbon Anodes

Biochar as an Additive to Modify Biopitch Binder for Carbon Anodes

Effect of fine coke particles on rheological properties of the binder matrix of carbon anodes in aluminium production process

Recent advances in liquid‐phase NMR of the coal‐derived products

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