Support effect in the hydrodesulfurization of thiophene over rhodium sulfide

Kaluža, Luděk; Vı́t, Zdeněk; Zdražil, Miroslav

doi:10.1007/s11144-010-0212-0

Cited by 6 publications

(4 citation statements)

References 23 publications

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“…Thiophene and its derivatives are very stable and difficult to desulfurize, and many different substrates have been subject to extensive analyses as possible catalysts. Among these, materials are semiconductor oxides like TiO 2 or ZnO [33,34], specifically, TiO 2 is employed as an active support for trapping S-containing impurities [33][34][35][36][37][38][39][40][41]. Experimental work supported by density functional calculation, STM and synchrotron studies, among others, have shown that thiophene can be bond to TiO 2 via the aromatic ring, but also by the S-end atom [37][38][39][40][41].…”

Section: Meh-ppv Vs P3ht: Bridging Tio 2 Through the S-end Atommentioning

confidence: 99%

Oxide/polymer interfaces for hybrid and organic solar cells: Anatase vs. Rutile TiO2

Lira‐Cantú

Chafiq

Faissat

et al. 2011

Solar Energy Materials and Solar Cells

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Section: Meh-ppv Vs P3ht: Bridging Tio 2 Through the S-end Atommentioning

confidence: 99%

Oxide/polymer interfaces for hybrid and organic solar cells: Anatase vs. Rutile TiO2

Lira‐Cantú

Chafiq

Faissat

et al. 2011

Solar Energy Materials and Solar Cells

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“…The vast applications of Pd-based bimetallic catalysts in catalysis science, including hydrodesulfurization, were recently reviewed by Fenglin et al Other noble metals such as ruthenium − and rhodium − have also been explored for the hydrodesulfurization application; however, like Pt and Pd, they have not been widely accepted for practical application in refineries. On the other hand, cheaper metals are also continuously being explored for possible replacement of predominantly alumina-supported NiMo and CoMo catalysts.…”

Section: Active Phasesmentioning

confidence: 99%

Advanced Hydrodesulfurization Catalysts: A Review of Design and Synthesis

2019

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Proliferating energy consumption, particularly of fossil fuels, has led to an increasing generation of pollutants; many of these harmful products have been of serious environmental concern. While energy demand will continue to grow due to massive urbanization and industrialization, the ability to remove such pollutants has not yet been achieved. Therefore, policies are always being reviewed to accommodate the existing reality of minimizing the amount of pollutants released to the environment on a daily basis. Sulfur dioxide, a major environmental pollutant, gets to the environment through the combustion of sulfur-containing fuel in the engine of automobiles. Over the years, regulatory bodies such as the European Emission Standard have set limits to the amount of sulfur in transportation fuel to safeguard the environment. Lately, the limit for clean fuel specification with respect to sulfur content is set to nearly zero ppm. This policy came at a time when crude oil experienced a large decline in price, in addition to increased sulfur content and daily fluctuations of crude density. Compliance with this tight regulation will mean that refineries are expected to either modify their hydrotreating unit, which is capital intensive, or adopt robust catalysts, through research, that can work in tandem with the existing conventional hydrotreating catalysts to reduce the sulfur level to the required limit. This urgent demand has once more drawn the attention of the scientific community. Since there has been a great stock of research outcomes with respect to catalysts for hydrodesulfurization application in recent times, our aim is to collect and review those recent articles on hydrodesulfurization catalyst design and development. The tutorial review is therefore intended to cover a basic hydrodesulfurization overview, followed by detailed discussions on the recent development in the choice of active phases, their supports, and synthesis strategies. The work is expected to guide researchers, especially beginners that are interested in refinery hydrotreatment, on the recent development in hydrodesulfurization catalyst design and development.

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“…[119][120][121][122][123][124] Additionally, Ru, Rh and Re were explore to advance the HDS activity of different crude oils, but the advances were shortfall of the performances obtained for conventional catalysts and could not be advanced for industrial feasibility. [102,123,[125][126][127][128][129][130] Another important class of HDS catalysts, gaining fast research interests and touted to be a serious alternative to the transition metal sulfides is transition metal phosphides (MP or M 2 P). [131][132][133][134][135][136][137][138][139][140][141][142][143][144] This popularity and research acceptability is due to their intrinsic catalytic performance during HDS reaction that is well compared to the conventional sulfided Ni(Co)Mo(W).…”

Section: Active Phasementioning

confidence: 99%

“…in supported HDS catalysts [119–124] . Additionally, Ru, Rh and Re were explore to advance the HDS activity of different crude oils, but the advances were shortfall of the performances obtained for conventional catalysts and could not be advanced for industrial feasibility [102,123,125–130] …”

Section: Active Phasementioning

confidence: 99%

Hierarchical Hybrid Supports and Synthesis Strategies for Hydrodesulfurization of Recalcitrance Organosulfur Compounds

Ganiyu

2021

Chemistry An Asian Journal

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It is undisputed that there is a paradigm shift in the global trend of crude oil towards being more sour and heavier than usual light sources. Consequently, the hydrotreating activity becomes a bottleneck with high content of S, N, metals and other impurities than expected. On the other hand, the price of petroleum products lately witnessed instability and fell to the lowest average price (<USD 20) in recent times. In the same vein, the regulation to control the emission of toxic compounds in the atmosphere become stricter as promulgated by various policymakers. In this sense, robust hydrotreating catalysts with characteristics efficient catalytic activity, selectivity and stability are highly desirable. Recently, different approaches have been used to improve and cushion the unprecedented effect emanated from economic, social and environmental challenges posed by heavy and sour crude sources, price instability of the refined products and regulation to lower the sulfur to minimum level or zero parts per millions (ppm). Importantly, the role of support in catalysis cannot be over emphasized, whilst the surface area and porosity, mechanical and thermal stability, dispersion of active metals, acidity/basicity have been greatly improved, the increased activity, stability and selectivity has been observed significantly. In this review, hybrid supports based on aluminosilicates (zeolitic types) and other notable supports from recent literatures were explored and discussed for Ni(Co)Mo(W) supported catalysts for hydrodesulfurization (HDS) activity of heavy organosulfur molecules. The emphasis on the hybrid supports’ varied characteristics for HDS of organosulfur molecules, where there are necessities for fast diffusion of reactants and products, better dispersion of MoS2 crystallites, high surface area and pore volume, and increased acidity of the catalysts are greatly emphasized. Furthermore, the progress made so far on different HDS active phases viz. noble metals, metal phosphides, intermetallic silicides, carbides and iron‐zinc are highlighted in this write‐up, irrespective of the support composition in the supported catalysts formulations. The need for application of predictive tools, like machine learning (ML) in the design and development of HDS catalysts, and performance evaluation of HDS activity towards achieving better catalytic operation was briefly highlighted. Finally, the review will serve as a summary of scientific efforts in this regards and bridge a gap for the newcomers to investigate the topic in a better way through proper selection and efficient catalysts design.

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Support effect in the hydrodesulfurization of thiophene over rhodium sulfide

Cited by 6 publications

References 23 publications

Oxide/polymer interfaces for hybrid and organic solar cells: Anatase vs. Rutile TiO2

Oxide/polymer interfaces for hybrid and organic solar cells: Anatase vs. Rutile TiO2

Advanced Hydrodesulfurization Catalysts: A Review of Design and Synthesis

Hierarchical Hybrid Supports and Synthesis Strategies for Hydrodesulfurization of Recalcitrance Organosulfur Compounds

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