Dispersed Ni and Co Promoted MoS<sub>2</sub>
 Catalysts with Magnetic Greigite as a Core: Performance and Stability in Hydrodesulfurization

Sharifvaghefi, Seyyedmajid; Zheng, Ying

doi:10.1002/slct.201700851

Cited by 9 publications

(5 citation statements)

References 26 publications

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“…Efficiency, as we might expect, was substantially increased with addition of amine compounds [ 34 ]. Yet, in contrast to its occlusion in mackinawite, molybdenum appears to be excluded from the inverse spinel, though Ni-bearing greigite can be coated with layered MoS 2 in the lab [ 247 ]. Dosed thus, Sharifvaghefi and Zheng showed that it can promote both hydrogenation and desulfurization reactions of, for example, dibenzothiophene (DBT, H 4 C 6 S C 6 H 4 ), while remaining stable [ 247 ].…”

Section: Iron Sulfides: the Supporting Castmentioning

confidence: 99%

Green Rust: The Simple Organizing ‘Seed’ of All Life?

Russell

2018

Life

126

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Korenaga and coworkers presented evidence to suggest that the Earth’s mantle was dry and water filled the ocean to twice its present volume 4.3 billion years ago. Carbon dioxide was constantly exhaled during the mafic to ultramafic volcanic activity associated with magmatic plumes that produced the thick, dense, and relatively stable oceanic crust. In that setting, two distinct and major types of sub-marine hydrothermal vents were active: ~400 °C acidic springs, whose effluents bore vast quantities of iron into the ocean, and ~120 °C, highly alkaline, and reduced vents exhaling from the cooler, serpentinizing crust some distance from the heads of the plumes. When encountering the alkaline effluents, the iron from the plume head vents precipitated out, forming mounds likely surrounded by voluminous exhalative deposits similar to the banded iron formations known from the Archean. These mounds and the surrounding sediments, comprised micro or nano-crysts of the variable valence FeII/FeIII oxyhydroxide known as green rust. The precipitation of green rust, along with subsidiary iron sulfides and minor concentrations of nickel, cobalt, and molybdenum in the environment at the alkaline springs, may have established both the key bio-syntonic disequilibria and the means to properly make use of them—the elements needed to effect the essential inanimate-to-animate transitions that launched life. Specifically, in the submarine alkaline vent model for the emergence of life, it is first suggested that the redox-flexible green rust micro- and nano-crysts spontaneously precipitated to form barriers to the complete mixing of carbonic ocean and alkaline hydrothermal fluids. These barriers created and maintained steep ionic disequilibria. Second, the hydrous interlayers of green rust acted as engines that were powered by those ionic disequilibria and drove essential endergonic reactions. There, aided by sulfides and trace elements acting as catalytic promoters and electron transfer agents, nitrate could be reduced to ammonia and carbon dioxide to formate, while methane may have been oxidized to methyl and formyl groups. Acetate and higher carboxylic acids could then have been produced from these C1 molecules and aminated to amino acids, and thence oligomerized to offer peptide nests to phosphate and iron sulfides, and secreted to form primitive amyloid-bounded structures, leading conceivably to protocells.

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Section: Iron Sulfides: the Supporting Castmentioning

confidence: 99%

Green Rust: The Simple Organizing ‘Seed’ of All Life?

Russell

2018

Life

126

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“…After adding C16H36BrN, the surface of microspheres became smoother. The application of additives was favourable to fixation and nucleation, MoS2/Fe3S4, CoMoS/Fe3S4, NiMoS/Fe3S4 and MoS2/SiO2/Fe3O4 with CTAB and SDS were synthesized as additives [76,77]. The application of additive make the morphology of products become more homogeneous.…”

Section: Additivementioning

confidence: 99%

Application of Hydrothermal and Solvothermal Method in Synthesis of MoS2

He¹,

Liu²,

Zhong³

et al. 2022

Rev. Chim.

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Hydrothermal and solvothermal method were considered as the effective methods for preparation of MoS2 nanomaterials. The current researches of MoS2 mainly concerned on electrical properties, the research of reaction system was relatively less. In this paper, synthesis system of MoS2 was elaborated from precursor, solution, reductant, sulfurizing agent, additive and pH regulator. The application of multifunctional raw materials can greatly simplify reaction system. This provided a reference for the application of hydrothermal and solvothermal method in preparation of MoS2.

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“…[33] Yet, in contrast to its occlusion in mackinawite, molybdenum appears to be excluded from the inverse spinel, though Ni-bearing greigite can be coated with layered MoS2 in the lab. [223] Dosed thus, Sharifvaghefi and Zheng show that it can, while remaining stable, promote both hydrogenation and desulfurization reactions of, for example, dibenzothiophene (DBT, H4C6S C6H4). [223] …”

Section: Greigite [Fe3s4]mentioning

confidence: 99%

“…[223] Dosed thus, Sharifvaghefi and Zheng show that it can, while remaining stable, promote both hydrogenation and desulfurization reactions of, for example, dibenzothiophene (DBT, H4C6S C6H4). [223] …”

Section: Greigite [Fe3s4]mentioning

confidence: 99%

Green Rust: The Simple Organizing ‘Seed’ of All Life?  <strong> </strong>

Russell

2018

Preprint

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The most important problem of synthetic biology is…the reduction of carbonic acid. and Without the idea of spontaneous generation and a physical theory of life, the doctrine of evolution is a mutilated hypothesis without unity or cohesion.[1] Leduc, [1]Abstract: Korenaga and coworkers present evidence to suggest that 4.3 billion years ago the Earth's mantle was dry and water filled the ocean to twice its present volume.[2] CO2 was constantly exhaled during the mafic to ultramafic volcanic activity associated with magmatic plumes that produced the thick, dense and relatively stable oceanic crust. In that setting two distinct major types of sub-marine hydrothermal vents were active: ~400°C acidic springs whose effluents bore vast quantities of iron into the ocean, and ~120°C, highly alkaline and reduced vents exhaling from the cooler, serpentinizing crust at some distance from the heads of the plumes. When encountering the alkaline effluents, the iron from the plume head vents precipitated out forming mounds likely surrounded by voluminous exhalative deposits similar to the banded iron formations known from the Archean. These mounds and the surrounding sediments likely comprising nanocrysts of the variable valence FeII/FeIII oxyhydroxide, green rust. The precipitation of green rust, along with subsidiary iron sulfides and minor concentrations of Ni, Co and Mo in the environment at the alkaline springs may have established both the key bio-syntonic disequilibria, and the means to properly make use of them -those needed to drive the essential inanimate-to-animate transitions that launched life. In the submarine alkaline vent model for the emergence of life specifically it is first suggested that the redox-flexible green rust microcrysts spontaneously formed precipitated barriers to the complete mixing of carbonic ocean and alkaline hydrothermal fluids, barriers that created and maintained steep ionic disequilibria; and second, that the hydrous interlayers of green rust acted as 'engines' that were powered by those ionic disequilibria and drove essential endergonic reactions. There, aided by sulfides and trace elements acting as catalytic promoters and electron transfer agents, nitrate could be reduced to ammonia and carbon dioxide to formate, while methane may have been oxidized to methyl and formyl groups. Acetate and higher carboxylic acids could then have been produced from these C1 molecules and aminated to amino acids, and thence oligomerized to offer peptide nests to phosphate and iron sulfides and secreted to form primitive amyloid-bounded structures, leading conceivably to protocells.

show abstract

Dispersed Ni and Co Promoted MoS₂ Catalysts with Magnetic Greigite as a Core: Performance and Stability in Hydrodesulfurization

Cited by 9 publications

References 26 publications

Green Rust: The Simple Organizing ‘Seed’ of All Life?

Green Rust: The Simple Organizing ‘Seed’ of All Life?

Application of Hydrothermal and Solvothermal Method in Synthesis of MoS2

Green Rust: The Simple Organizing ‘Seed’ of All Life?  <strong> </strong>

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Dispersed Ni and Co Promoted MoS2 Catalysts with Magnetic Greigite as a Core: Performance and Stability in Hydrodesulfurization

Cited by 9 publications

References 26 publications

Green Rust: The Simple Organizing ‘Seed’ of All Life?

Green Rust: The Simple Organizing ‘Seed’ of All Life?

Application of Hydrothermal and Solvothermal Method in Synthesis of MoS2

Green Rust: The Simple Organizing &lsquo;Seed&rsquo; of All Life?&nbsp;&nbsp;<strong> </strong>

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Dispersed Ni and Co Promoted MoS₂ Catalysts with Magnetic Greigite as a Core: Performance and Stability in Hydrodesulfurization

Green Rust: The Simple Organizing ‘Seed’ of All Life? <strong> </strong>