The Role of the Solvent in Radical Decomposition Reactions: Phenylazotriphenylmethane

1954 ◽  
Vol 76 (5) ◽  
pp. 1425-1427 ◽  
Author(s):  
Marilyn G. Alder ◽  
John E. Leffler
Keyword(s):  
Decomposition Reactions ◽  
Radical Decomposition

The Role of the Solvent in Radical Decomposition Reactions: p-Nitrophenylazotris-(p-anisyl)-methane

1954 ◽  
Vol 76 (16) ◽  
pp. 4169-4171 ◽  
Author(s):  
Mendel D. Cohen ◽  
John E. Leffler ◽  
Libero M. Barbato
Keyword(s):  
Decomposition Reactions ◽  
Radical Decomposition

THE KINETICS OF THE DECOMPOSITION REACTIONS OF THE LOWER PARAFFINS: IV. THE ROLE OF FREE RADICALS IN THE DECOMPOSITION OF n-BUTANE

1939 ◽  
Vol 17b (3) ◽  
pp. 105-120 ◽  
Author(s):  
E. W. R. Steacie ◽  
H. O. Folkins
Keyword(s):  
Nitric Oxide ◽  
Ethylene Oxide ◽  
Complete Suppression ◽  
Radical Chain ◽  
Decomposition Reactions ◽  
Maximum Inhibition ◽  
A Chain ◽  
Kinetics Of ◽  
Oxide Inhibition

An investigation has been made of the inhibition of free radical chain processes in the decomposition of n-butane by the addition of nitric oxide. The method was to initiate chains in butane at low temperatures by means of ethylene oxide, and then to investigate the efficiency of nitric oxide in suppressing these chains.It was found that nitric oxide is not completely efficient as a chain breaker, inasmuch as sensitization by ethylene oxide persisted in the presence of large amounts of nitric oxide. It is therefore concluded that maximum inhibition of organic decomposition reactions by nitric oxide does not in all cases correspond to complete suppression of chains, and hence the real chain length in such reactions may be greater than that inferred from the results of the nitric oxide inhibition method.

Theoretical studies on p-pyridyl radical decomposition reactions

2004 ◽  
Vol 678 (1-3) ◽  
pp. 17-21 ◽  
Author(s):  
Xue Li Cheng ◽  
Yan Yun Zhao ◽  
Zheng Yu Zhou
Keyword(s):  
Theoretical Studies ◽  
Decomposition Reactions ◽  
Radical Decomposition

THE EFFECT OF COMPLEXING IN RADICAL DECOMPOSITION REACTIONS

1954 ◽  
Vol 19 (7) ◽  
pp. 1089-1096 ◽  
Author(s):  
JOHN E. LEFFLER ◽  
R. A. HUBBARD
Keyword(s):  
Decomposition Reactions ◽  
Radical Decomposition

Chemiluminescence from peroxide decomposition reactions. Role of energy transfer

1970 ◽  
Vol 92 (5) ◽  
pp. 1128-1136 ◽  
Author(s):  
Seth R. Abbott ◽  
Stanley. Ness ◽  
David M. Hercules
Keyword(s):  
Energy Transfer ◽  
Decomposition Reactions ◽  
Peroxide Decomposition

Central Role of Phenanthroline Mono-N-oxide in the Decomposition Reactions of Tris(1,10-phenanthroline)iron(II) and -iron(III) Complexes

2010 ◽  
Vol 49 (9) ◽  
pp. 3968-3970 ◽  
Author(s):  
Gábor Bellér ◽  
Gábor Lente ◽  
István Fábián
Keyword(s):  
Decomposition Reactions

scholarly journals The role of decomposition reactions in assessing first-principles predictions of solid stability

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Christopher J. Bartel ◽  
Alan W. Weimer ◽  
Stephan Lany ◽  
Charles B. Musgrave ◽  
Aaron M. Holder
Keyword(s):  
First Principles ◽  
Decomposition Reactions

scholarly journals Reductive Defluorination and Mechanochemical Decomposition of Per- and Polyfluoroalkyl Substances (PFASs): From Present Knowledge to Future Remediation Concepts

2020 ◽  
Vol 17 (19) ◽  
pp. 7242
Author(s):  
Philipp Roesch ◽  
Christian Vogel ◽  
Franz-Georg Simon
Keyword(s):  
Cost Effective ◽  
Future Research ◽  
Research Directions ◽  
Decomposition Reactions ◽  
Sustainable Technologies ◽  
The Past ◽  
Remediation Strategies ◽  
Future Research Directions ◽  
Polyfluoroalkyl Substances

Over the past two decades, per- and polyfluoroalkyl substances (PFASs) have emerged as worldwide environmental contaminants, calling out for sophisticated treatment, decomposition and remediation strategies. In order to mineralize PFAS pollutants, the incineration of contaminated material is a state-of-the-art process, but more cost-effective and sustainable technologies are inevitable for the future. Within this review, various methods for the reductive defluorination of PFASs were inspected. In addition to this, the role of mechanochemistry is highlighted with regard to its major potential in reductive defluorination reactions and degradation of pollutants. In order to get a comprehensive understanding of the involved reactions, their mechanistic pathways are pointed out. Comparisons between existing PFAS decomposition reactions and reductive approaches are discussed in detail, regarding their applicability in possible remediation processes. This article provides a solid overview of the most recent research methods and offers guidelines for future research directions.

The role of excited states in the gas-phase photolysis of acetaldehyde

1973 ◽  
Vol 334 (1598) ◽  
pp. 411-426 ◽  
Keyword(s):  
Triplet State ◽  
Gas Phase ◽  
Excited States ◽  
Product Formation ◽  
Vibrationally Excited ◽  
Liquid Phases ◽  
Radical Decomposition ◽  
A Chain ◽  
Low Pressures

The cis-trans isomerization of butene-2 has been used to measure the triplet state yields in the photolysis of acetaldehyde at various wavelengths between 313 and 254 nm over the temperature range 35 to 140 °C. The results, together with those derived from chemical product formation, are consistent with data from luminescence studies. Dissociation into molecular products occurs rapidly, probably by predissociation, from a non-quenchable excited state formed by absorption. The main free radical decomposition occurs from the triplet state and this, in the absence of additives, such as butene-2, is responsible for the chain decomposition. The intersystem crossing and non-quenchable processes are independent of temperature. Isopentyl radicals formed from methyl addition to butene-2 can also propagate a chain reaction for acetaldehyde decomposition. At high temperatures and low pressures, dissociation of vibrationally excited isopentyl radicals can contribute to the measured isomerization yield. This is shown by the effect of addition of inert gas. Evidence is put forward that geometrical isomerization of the olefin involves a triplet aldehyde-olefin complex that can be decomposed by collision with ground state aldehyde molecules without cis-trans rearrangement of the olefin. This conclusion is consistent with other work in the gas and liquid phases.

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