Upgrading of triglycerides, pyrolysis oil, and lignin over metal sulfide catalysts: A review on the reaction mechanism, kinetics, and catalyst deactivation

Cheah, You Wayne; Salam, Muhammad Abdus; Sebastian, Joby; Ghosh, Sreetama; Arora, Prakhar; Öhrman, Olov; Olsson, Louise; Creaser, Derek

doi:10.1016/j.jece.2023.109614

Cited by 17 publications

(4 citation statements)

References 210 publications

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“…Recent studies by [15] and [14] have explored the concept of synergistic catalysis on K10 clay, where multiple catalytic sites collaborate to enhance reaction efficiency. Tandem reactions involving sequential catalytic steps have been investigated, showcasing the potential of K10 clay as a multifunctional catalyst.…”

Section: Synergistic Catalysis and Tandem Reactionsmentioning

confidence: 99%

Understanding The Mechanisms Of Catalytic Reactions On K10 Clay: A Comprehensive Study

Anjali Dhiman, Gurmeet Kaur

2023

tjjpt

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This systematic review delves into the mechanisms of catalytic reactions on K10 clay, synthesizing a wealth of experimental and computational insights to offer a comprehensive understanding. The catalytic versatility of K10 clay is dissected across diverse reactions, including esterification, aldol condensation, methane activation, biomass conversion, redox reactions, ester hydrolysis, and tandem reactions. Thematic analysis unravels the broad spectrum of applications for K10 clay, emphasizing the need for a nuanced understanding of reaction-specific mechanisms. A critical comparative analysis of experimental and computational approaches showcases their complementary roles in unraveling the intricacies of K10 clay catalysis. The quality assessment process underscores the methodological rigor of individual studies, guiding the interpretation of findings. Practical implications for environmental remediation, fine chemical synthesis, and industrial processes are discussed, accompanied by identified gaps that delineate future research directions. This systematic review not only advances the understanding of catalytic reactions on K10 clay but also serves as a template for future explorations in the dynamic realm of catalytic materials. With a foundation built on rigorous analysis and thoughtful integration of diverse findings, this review aims to inspire continued innovation and investigation in the field of catalysis research.

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Section: Synergistic Catalysis and Tandem Reactionsmentioning

confidence: 99%

Understanding The Mechanisms Of Catalytic Reactions On K10 Clay: A Comprehensive Study

Anjali Dhiman, Gurmeet Kaur

2023

tjjpt

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“…Hydrotreating is the largest-scale technology among the secondary oil refining processes, and its significance for the industry is very high. In this regard, currently used conventional hydrotreating catalysts based on transition metal sulfides and alumina − will continue to be improved in order to increase the effectiveness of the process for the refining of heavier feedstocks, as well as feedstocks from alternative sources, including renewables. − …”

Section: Introductionmentioning

confidence: 99%

Sorbitol Derived Carbon Coated Alumina Composite as a Promising Support for CoMoS Hydrotreating Catalyst

Kazakova,

Parfenov,

Golubtsov

et al. 2024

Ind. Eng. Chem. Res.

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The beneficial impact of carbon coated alumina (C@Al 2 O 3 ) implemented as support for the CoMoS hydrotreating catalyst has been demonstrated. A series of C@Al 2 O 3 supports with varying carbon contents were obtained by pyrolysis of sorbitol preliminarily impregnated in alumina from an aqueous solution. It was found that carbon coating positively affects the formation of the high-active CoMoS phase. However, control of the carbon content from 2.3 to 11.3 wt % is essential to maintain the sulfide particles dispersion and textural properties. CoMoS/C@Al 2 O 3 catalysts demonstrated superior hydrodesulfurization activity compared with CoMoS/Al 2 O 3 . The hydrodenitrogenation activity of most CoMoS/C@Al 2 O 3 samples is similar to CoMoS/Al 2 O 3 but decreases when the carbon content in the support exceeds 11.3 wt %. The determining factor in improving the CoMoS/C@Al 2 O 3 hydrodesulfurization activity is the formation of defective graphene fragments, which partially cover the alumina surface and help to reduce the support acidity and, therefore, metal−support interaction while maintaining the textural characteristics.

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“…Oils derived from the pyrolysis of biomass have been proven for their potential as a high-end fuel through the process of hydrotreatment. , Hydrotreatment aims to reduce O 2 content and catalytically increase the stability and calorific value of the pyro-oil. Hydrotreatment is a well-established process in the petroleum industry and was employed on oils derived from biomass in the past, with no research conducted as of yet on its effect on the catalyst used post-treatment of PW pyrolysis oil .…”

Section: Introductionmentioning

confidence: 99%

Effect of Polyethylene Pyrolysis Oil Hydrotreatment on the Pt/Al₂O₃ Catalyst: Experimental Characterization

Adamou,

Harkou,

Bumajdad

et al. 2024

ACS Omega

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The dramatic increase in plastics production, coupled with a low recycling and recovery rate, has been a major challenge for sustainable practices and combating climate change. Hydrotreatment processing to upgrade fuel oils is a well-known process in the petroleum industry. In this work, we aim to investigate the catalyst properties before and after the hydrotreatment of pyrolysis oil derived from plastics, namely, linear low-density polyethylene, as no such report is available in the literature. Granular and powder forms of the Pt/Al2O3 catalyst were used in this study with characterization methods executed as such: transmission electron microscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and IR-RIS. XRD data show that the crystallinity of the catalyst support was unaffected by the hydrotreatment without any residues left, as the characteristic diffraction peaks were indicated for the crystalline phase of the support as 37.4, 39.8, 46.3, and 67.3°. In addition, the TGA experiments revealed that the carbon deposition on the spent catalyst was higher, as indicated by the higher weight loss (15.359%) compared to the fresh catalyst sample (11.43%). XPS analysis showed that the carbon deposition is more intense on the granular spent catalyst, as the intensity of the peaks is some 15 times greater than the peaks from the fresh catalyst. Also, compared to the observed peaks of the powder catalyst, less coke is formed. The band at 1624.05 cm–1 from the IR-RIS spectra was attributed to a shifted CO band from the coke formation. The extension of these investigations using different catalysts to improve their characteristics and performance and to inhibit coke deposition will contribute to the incorporation of such processes in industry as well as the cost of fuels.

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Upgrading of triglycerides, pyrolysis oil, and lignin over metal sulfide catalysts: A review on the reaction mechanism, kinetics, and catalyst deactivation

Cited by 17 publications

References 210 publications

Understanding The Mechanisms Of Catalytic Reactions On K10 Clay: A Comprehensive Study

Understanding The Mechanisms Of Catalytic Reactions On K10 Clay: A Comprehensive Study

Sorbitol Derived Carbon Coated Alumina Composite as a Promising Support for CoMoS Hydrotreating Catalyst

Effect of Polyethylene Pyrolysis Oil Hydrotreatment on the Pt/Al₂O₃ Catalyst: Experimental Characterization

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Upgrading of triglycerides, pyrolysis oil, and lignin over metal sulfide catalysts: A review on the reaction mechanism, kinetics, and catalyst deactivation

Cited by 17 publications

References 210 publications

Understanding The Mechanisms Of Catalytic Reactions On K10 Clay: A Comprehensive Study

Understanding The Mechanisms Of Catalytic Reactions On K10 Clay: A Comprehensive Study

Sorbitol Derived Carbon Coated Alumina Composite as a Promising Support for CoMoS Hydrotreating Catalyst

Effect of Polyethylene Pyrolysis Oil Hydrotreatment on the Pt/Al2O3 Catalyst: Experimental Characterization

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Effect of Polyethylene Pyrolysis Oil Hydrotreatment on the Pt/Al₂O₃ Catalyst: Experimental Characterization