Erwiderung auf: R. Behrisch, Ber. Bunsenges. Phys. Chem. <i>96</i>, 733 (1992)

Gentsch, H.

doi:10.1002/bbpc.19920960519

“…Zetzsch and Stuhl [2] using flash-photolysis of dilute ammonia-inert gas mixtures at room temperature and total pressures of about 1 bar could not observe any reaction of NH(X3 C-) with NH3 and give an upper limit of k , 5 5 . I O7 cm3/mol s for the disappearance of NH (X3 Cl).…”

Section: Introductionmentioning

confidence: 93%

A direct measurement of the reaction NH₃ + NH→2NH₂

Röhrig¹,

Römming²,

Wagner³

1994

Ber Bunsenges Phys Chem

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The reaction of NH in its electronic ground state with ammonia was investigated behind incident shock waves using narrow line width absorption detection of NH(X3X-). The initial concentrations of HN, which was used as source of NH(X3C-) were very low in order to reduce the influence of secondary reactions. Thus it became possible to measure kinetic data for the reaction of NH(X3X-)+NH3 (1) directly. In a temperature range from 1300 to 1700K a rate constant k , = 10(i4.5t0.3)exp(-(112t9) kJ m o l~' / R T ) c m 3 / m o l s was obtained. The apparent energy of activation fits well into an Evans Polanyi plot for H abstraction reactions of NH(X3X-).

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“…The concept of solid materials with atomically-dispersed metals can be traced back to the 1970s, when Köpp et al [16] conducted pioneering research on the first single-atom catalyst. Despite the significance of their work, the scientific community overlooked their contributions mainly due to the experimental challenge of visualizing atomically-dispersed sites with a microscope.…”

Section: Introductionmentioning

confidence: 99%

Single‐Atom Catalysis in Organic Synthesis

Saptal

¹

,

Ruta

²

,

Bajada

³

et al. 2023

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Single‐atom catalysts hold the potential to significantly impact the chemical sector, pushing the boundaries of catalysis in new, uncharted directions. These materials, featuring isolated metal species ligated on solid supports, can exist in many coordination environments, all of which have shown important functions in specific transformations. Their emergence has also provided exciting opportunities for mimicking metalloenzymes and bridging the gap between homogeneous and heterogeneous catalysis. This Review outlines the impressive progress made in recent years regarding the use of single‐atom catalysts in organic synthesis. We also illustrate potential knowledge gaps in the search for more sustainable, earth‐abundant single‐atom catalysts for synthetic applications.

show abstract

“…The concept of solid materials with atomically‐dispersed metals can be traced back to the 1970s, when Köpp et al [16] . conducted pioneering research on the first single‐atom catalyst.…”

Section: Introductionmentioning

confidence: 99%

Single‐Atom Catalysis in Organic Synthesis

Saptal

¹

,

Ruta

²

,

Bajada

³

et al. 2023

Angewandte Chemie

2

0

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Single‐atom catalysts hold the potential to significantly impact the chemical sector, pushing the boundaries of catalysis in new, uncharted directions. These materials, featuring isolated metal species ligated on solid supports, can exist in many coordination environments, all of which have shown important functions in specific transformations. Their emergence has also provided exciting opportunities for mimicking metalloenzymes and bridging the gap between homogeneous and heterogeneous catalysis. This Review outlines the impressive progress made in recent years regarding the use of single‐atom catalysts in organic synthesis. We also illustrate potential knowledge gaps in the search for more sustainable, earth‐abundant single‐atom catalysts for synthetic applications.

show abstract

Erwiderung auf: R. Behrisch, Ber. Bunsenges. Phys. Chem. 96, 733 (1992)

Cited by 4 publications

References 0 publications

A direct measurement of the reaction NH₃ + NH→2NH₂

A direct measurement of the reaction NH₃ + NH→2NH₂

Single‐Atom Catalysis in Organic Synthesis

Single‐Atom Catalysis in Organic Synthesis

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Erwiderung auf: R. Behrisch, Ber. Bunsenges. Phys. Chem. 96, 733 (1992)

Cited by 4 publications

References 0 publications

A direct measurement of the reaction NH3 + NH→2NH2

A direct measurement of the reaction NH3 + NH→2NH2

Single‐Atom Catalysis in Organic Synthesis

Single‐Atom Catalysis in Organic Synthesis

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Product

Resources

About

A direct measurement of the reaction NH₃ + NH→2NH₂

A direct measurement of the reaction NH₃ + NH→2NH₂