Thermal evolution of chemical structure and mechanism of oil sands bitumen

Wang, Zhichao; Wang, Qing; Jia, Chunxia; Bai, Jingru

doi:10.1016/j.energy.2022.123190

Cited by 91 publications

(19 citation statements)

References 51 publications

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“…The bending vibrations at around 746 cm –1 indicated the rocking vibrations of the CH 2 of the long chain. , The notable bands observed in the pyrolytic oils depict the marked presence of aliphatic compounds in the oils. The findings obtained in this study are consistent with the FT-IR spectra of the liquid products derived from the pyrolysis of Buton oil sand bitumen , and Karamay oil sand bitumen …”

Section: Resultssupporting

confidence: 89%

Pyrolysis of Oil Sand Bitumen Using a Fixed-Bed Reactor: Process Modeling and Compositional Analysis

Ore,

Adebiyi

2023

Ind. Eng. Chem. Res.

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Section: Resultssupporting

confidence: 89%

Pyrolysis of Oil Sand Bitumen Using a Fixed-Bed Reactor: Process Modeling and Compositional Analysis

Ore,

Adebiyi

2023

Ind. Eng. Chem. Res.

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“…Analysis of pavements and their constituents is highly important due to a better understanding of their performances under diferent conditions [1,2]. Te behavior of asphalt pavement has a complex system that is faced with several layers of diferent materials with varying combinations of trafc loads and environmental conditions [3][4][5]. Te asphalt pavement industry is constantly looking for solutions to improve pavement performance, increase construction efciency, conserve resources, and advance environmental stewardship.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Investigation of Reclaimed Asphalt Mixtures Containing Cyclogen and Vacuum Bottom Rejuvenators

Ziari

Mojaradi

Saadatjoo

et al. 2023

Advances in Civil Engineering

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The use of reclaimed asphalt pavement (RAP) to create recycled asphalt mixture is attracting great interest because of landfill space decrease and natural resources saving. Also, incorporating rejuvenators is an effective method to promote the utilization of RAP materials in hot mix asphalt (HMA) production. The main goal of this study was to evaluate the effect of Cyclogen and vacuum bottom (VB) rejuvenators on the performance of RAP mixtures against moisture sensitivity, rutting resistance, and tensile strength. In this regard, mixtures were constructed with different RAP contents (0, 35, and 70% by asphalt mix weight) and virgin aggregates. Furthermore, three contents of Cyclogen (0, 5, and 10%) and VB (0, 15, and 30%) by the weight of RAP binder were used. The laboratory test results revealed that RAP materials enhanced the indirect tensile strength, rutting resistance, and moisture sensitivity of asphalt samples. Moreover, increasing RAP content improved the rutting resistance and permanent deformations of asphalt samples. The addition of RAP also enhanced the resilient modulus and tensile strength of asphalt samples; this increase was subject to RAP content applied. Furthermore, the effect of rejuvenators on the performance characteristics of RAP mixtures showed that adding VB and Cyclogen decreased tensile strength, resilient modulus, and strain creep and increased the moisture sensitivity of RAP mixtures.

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“…Many exciting studies have been carried out on estimating the pyrolysis kinetics of oil sands in recent years. − Nevertheless, many of these studies have contributed significantly to the advances in knowledge with respect to the sole use of either model-free or model-fitting method as well as the proposition of mechanistic models of chemical structure evolution during the pyrolysis of the oil resource. However, the present study represents the first known attempt at evaluating the pyrolysis characteristics of Nigerian oil sands using model-free and model-fitting methods.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric Characteristics and Pyrolysis Kinetics of Nigerian Oil Sands

Ore

Adebiyi

2023

ACS Omega

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In the present study, the pyrolysis behavior of Nigerian oil sands was investigated using thermogravimetric analysis. This was done with the aim of deriving kinetic models that can be relevant in the development of the natural resource. The effects of different heating rates (10, 20, and 30 °C/min) on oil sand pyrolysis were studied. The results of the study indicated that three regions comprising low-temperature oxidation, devolatilization, and high-temperature oxidation were obtained at all heating rates. The peak temperatures were observed to rise with an increasing heating rate, a phenomenon described as thermal hysteresis. Mineralogical analysis showed the presence of diffraction peaks corresponding to chlorite, quartz, aragonite, dolomite, calcite, and montmorillonite minerals and the notable absence of expandable clay minerals which are known to pose problems during tailing management and the aqueous bitumen extraction process. The kinetic analysis showed that the activation energy increased with the degree of conversion, with the highest activation energy of 14.682 kJ mol–1. The Coats–Redfern kinetic model gave the best model fit for oil sand pyrolysis.

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Thermal evolution of chemical structure and mechanism of oil sands bitumen

Cited by 91 publications

References 51 publications

Pyrolysis of Oil Sand Bitumen Using a Fixed-Bed Reactor: Process Modeling and Compositional Analysis

Pyrolysis of Oil Sand Bitumen Using a Fixed-Bed Reactor: Process Modeling and Compositional Analysis

Laboratory Investigation of Reclaimed Asphalt Mixtures Containing Cyclogen and Vacuum Bottom Rejuvenators

Thermogravimetric Characteristics and Pyrolysis Kinetics of Nigerian Oil Sands

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