Selective hydrogenation of nitroarenes using an electrogenerated polyoxometalate redox mediator

MacDonald, Lewis; Rausch, Benjamin; Symes, Mark D.; Cronin, Leroy

doi:10.1039/c7cc09036f

Cited by 52 publications

(28 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Na 0.44 MnO 2 -based electrode has previously been employed in sodium ion batteries and so displays the required sodium ion intercalation/deintercalation properties; its redox Figure 17. Organic transformations mediated by reduced silicotungstic acid prepared by decoupled water electrolysis: a) Reductions of nitroarenes as reported by MacDonald et al [87] b) Hydrogenation of phenylacetylene and acetophenone as reported by Wu et al [85] waves are also almost exactly midway between the onset potentials of hydrogen and chlorine evolution.…”

Section: -mentioning

confidence: 87%

“…The polyoxometalate silicotungstic acid has found utility in this regard as a sustainable hydrogenation agent for a number of organic transformations. In 2018, MacDonald et al [87] used the two-electron reduced form of this compound (H 6 SiW 12 O 40 , which they generated electrochemically with concomitant oxidation of water) as a source of protons and electrons for the reduction of a range of nitroarene compounds to their aniline analogues in (on the whole) good to excellent yields (Figure 17a). The silicotungstic acid could then be recycled, rereduced, and reused without any appreciable drop in catalytic performance.…”

Section: Decoupled Electrolysis For Chemical Synthesismentioning

confidence: 99%

“…Organic transformations mediated by reduced silicotungstic acid prepared by decoupled water electrolysis: a) Reductions of nitroarenes as reported by MacDonald et al. [ 87 ] b) Hydrogenation of phenylacetylene and acetophenone as reported by Wu et al. [ 85 ] …”

Section: Decoupled Electrolysis For Chemical Synthesismentioning

confidence: 99%

See 2 more Smart Citations

Decoupled Electrochemical Water Splitting: From Fundamentals to Applications

McHugh

Stergiou

Symes

2020

Advanced Energy Materials

Self Cite

234

View full text Add to dashboard Cite

rely on fossil fuels is of great importance. Renewable energy sources, such as wind, solar, and tidal energy constitute arguably the most promising of these clean energy solutions, but suffer from the fact that they are intermittent. [6] Direct power supply from these sources therefore cannot be relied upon to satisfy instantaneous energy demands. [7] A means of storing the energy generated by these renewable sources is therefore essential if we are to depend more heavily on renewably generated power. [8] Hydrogen (H 2) is often proposed in this context as a promising "carbon neutral" energy carrier (i.e., fuel). In such a system, renewably generated electricity is used to electrolyze water to generate hydrogen and oxygen. The oxygen may be vented to the atmosphere whilst the hydrogen is stored as a fuel. This hydrogen is then subsequently oxidized (either by combustion or in a fuel cell) to regenerate water and to release energy. Hydrogen is not a perfect fuel but it does have a number of attractive properties such as its low toxicity, ability to be transported safely over long distances via pipeline, [9] and its high energy density per unit mass (three times greater than that of gasoline). [10] Moreover, sustainably sourced hydrogen could be used to reduce CO 2 or N 2 from the atmosphere to generate carbon-neutral fuels and commodity chemicals such as hydrocarbons and ammonia. In many ways then, hydrogen can be viewed as the key to a sustainable energy cycle. The process of water electrolysis can be considered in terms of its two half-reactions: the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). These half-equations differ somewhat depending on the pH at which the electrolysis is carried out. At low pH, the HER and OER proceed as follows (all potentials are vs the standard hydrogen electrode, SHE)

show abstract

Section: -mentioning

confidence: 87%

Section: Decoupled Electrolysis For Chemical Synthesismentioning

confidence: 99%

See 1 more Smart Citation

Decoupled Electrochemical Water Splitting: From Fundamentals to Applications

McHugh

Stergiou

Symes

2020

Advanced Energy Materials

Self Cite

234

View full text Add to dashboard Cite

show abstract

“…By leveraging the electrochromic properties of Well-Dawson-type polyoxometalates based on K 10 231 The electrochromic properties are available in K 6 P 2 W 18 O 62 when it is combined with TiO 2 nanowires, resulting in excellent switching and transmittance properties. 232 Polyoxotungstates have been employed in a number of energy conversion and storage applications 36,43,228,[233][234][235][236][237][238][239][240][241][242] and sensors. 145,[243][244][245][246][247] 6 | POLYOXOMOLYBDATE Molybdenum trioxide with the formula MoO 3 has been applied as catalysts and synthesizing agent, and its polyoxometalate counterpart polyoxomolybdate has been widely studied to modulate their electronic and optoelectronic properties for energy conversion and storage applications.…”

Section: Polyoxotungstatementioning

confidence: 99%

Polyoxometalates: Tailoring metal oxides in molecular dimension toward energy applications

Zhang

Chen

2020

Int J Energy Res

View full text Add to dashboard Cite

Summary Polyoxometalates could be viewed as the molecular counterpart of the metal oxides, which are essential ingredients for various energy conversion and storage applications. In this manuscript, we review the progress of engineering functional polyoxometalates toward energy applications, focusing on, but not limited to, polyoxotitanate, polyoxotungstate, and polyoxomolybdate. These polyoxometalates are considered to be promising candidates for dye‐sensitized solar cell, perovskite solar cell, lithium‐ion battery, lithium‐sulfur battery, supercapacitor, and water‐splitting system. We believe advanced energy devices with better performance could be derived from further engineering the polyoxometalates owing to their molecular design flexibility.

show abstract

“…4 However, instead of discharging this reduced redox mediator to make hydrogen, the authors instead used it to drive the chemical reduction of nitroarenes to their aniline derivatives. 5 Good to excellent yields of the anilines were reported, without the need to handle hydrogen gas or to employ any co-catalysts. The redox mediator could then be recycled and used again.…”

Section: Beyond Electrolysis: Decoupling Strategies In Fuel Cells Andmentioning

confidence: 99%

Decoupling Strategies in Electrochemical Water Splitting and Beyond

Wallace

Symes

2018

Joule

Self Cite

View full text Add to dashboard Cite

Mark Symes was born in London in 1982 and graduated from the University of Cambridge in 2005. After a PhD at the University of Edinburgh with David A. Leigh (FRS), he undertook postdoctoral studies at the Massachusetts Institute of Technology (2009-2010). In late 2010, he returned to the UK and became a postdoctoral researcher at the University of Glasgow. This didn't put them off though, and he joined the faculty at Glasgow in 2013. Since 2016 he has held a Royal Society University Research Fellowship at Glasgow. His research interests span energy conversion, small-molecule activations, electrochemistry, and electrocatalysis. Alex Wallace was born in Swindon in 1993 and graduated with a BSc in Chemistry (first class) from the University of Southampton in 2015. It was in Southampton that he developed a deep interest in electrochemistry, which led him to undertake further study by way of the world's first MSc in Electrochemistry at Southampton, from which he graduated in 2016 with Distinction. Hungry for more electrochemistry, he then immediately joined the Symes group at the University of Glasgow. His research interests include water electrolysis, sonoelectrochemistry, and electrochemistry in ionic liquids.

show abstract

Selective hydrogenation of nitroarenes using an electrogenerated polyoxometalate redox mediator

Cited by 52 publications

References 24 publications

Decoupled Electrochemical Water Splitting: From Fundamentals to Applications

Decoupled Electrochemical Water Splitting: From Fundamentals to Applications

Polyoxometalates: Tailoring metal oxides in molecular dimension toward energy applications

Decoupling Strategies in Electrochemical Water Splitting and Beyond

Contact Info

Product

Resources

About