Thermal decomposition of ozone

Intezarova, E. I.; Кондратьев, В. Н.

doi:10.1007/bf00911837

Cited by 11 publications

(10 citation statements)

References 15 publications

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“…Not discussed in Johnston's review [5] is the measurement by Intezarova and Kondrat'ev [6] from the thermal decomposition of 0 3 at 409"-499°K. They obtained kl = 4.85X exp (-3700/RT) cm3/particle-sec, and their results are shown by the dotted line in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

The reactions of O(³P) with ozone and carbonyl sulfide

Krezenski

Simonaitis

Heicklen

1971

Int J of Chemical Kinetics

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The competitive reactions between 2-trifluoromethylpropene (TMP) and OCS for O( atoms were studied between 300" and 523"K, using the mercury-senstitized photolysis of N20 as a source of O ( 3 P ) . From the known value for the rate constant of the O ( 3 P ) 4-TMP reaction, k3 was found to be 1.6X10-l1 exp (-4500/RT) cm3/particle-sec, where reaction (3) is (3) O~P )+ ocs co + soMixtures of p3 and OCS were photolyzed at 197", 228", 273", and 299°K with radiation above 4300 A to produce O ( 3 P ) from the photolysis of 03, and thus study the competition between reaction (3) and (1) o ( 3~) + 0 3 -zo2

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Section: Introductionmentioning

confidence: 99%

The reactions of O(³P) with ozone and carbonyl sulfide

Krezenski

Simonaitis

Heicklen

1971

Int J of Chemical Kinetics

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“…It is possible to infer the followings from the data in Tab 1: (1) The values of HLT by calculating and measuring are rather close to one another for all stagnant water mixtures with different ratios (samples 1, 2 and 3), indicating the correctness of applying the first order reaction for our study. (2) The ozone decomposition law follows the disinfection law proposed by Chick and Watson (exponential function). (3) In the system of ozonemicrobes, the characteristics of ozone decomposition curves exhibit the rate of reaction and half-life time (HLT).…”

Section: Ozone Decomposition Curvers Vs Density Of Microbiological Cmentioning

confidence: 99%

“…In water, ozone decomposition occurs by two mechanisms: thermal decomposition similar to the air case and decomposition that produces radicals, oxygen and water. [1][2][3] Besides the two mentioned above ozone decomposition mechanisms in air and in pure water, it is necessary to emphasize the interaction of ozone with contaminants presented in water. As commonly known, ozone reacts strongly with organic substances suspended in water.…”

Section: Introductionmentioning

confidence: 99%

Study of water disinfection by analyzing the ozone decomposition process

Nghi

Cuong

Dieu

et al. 2018

Vietnam Journal of Chemistry

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Possessing high binding energy, molecular ozone (O3) is not stable and spontaneously breaks down into oxygen especially at high temperature. It is called thermal decomposition of ozone. On other hand, ozone with high redox potential (2.06 V) is considered to be a powerful oxidant. In water ozone reacts with both of inorganic and organic substances. Interaction of ozone with the matters consumes an amount of ozone dissolved in water. So by analysing the ozone decomposition curves, we can measure and calculate the reaction rate R, rate constant k, the half‐life time and reaction order of the ozone reaction with the matters. These parameters indicate the disinfection ability of ozone and its mechanism. Calculated value of half‐life time can be used to estimate the water quality and the water disinfection level.

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“…(4), and the activation energy E act was determined on the basis of Refs. [30][31][32]. The temperature was assumed to be T = 190 K. Table 1 shows that the energy available to molecules on the surface of supercharged particles is quite sufficient for their dissociation [21], taking into account the large effective concentration of water molecules and other species on the effective surface of the supercharged particle (see below).…”

Section: Dipole Interaction and Chemical Reactions On The Surface Of mentioning

confidence: 99%

The Role of the Dipole Interaction of Molecules with Charged Particles in the Polar Stratosphere

Belikov¹,

Nikolayshvili²

2016

JEASE

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Our analysis of published results of experiments in the Polar Regions substantiates and further develops our new approach to the photochemical processes in the polar stratosphere involving the charged particles. The dipole interaction of molecules with charged particles, primarily with ions, leads to the adhesion and disintegration of a number of molecules including ozone. Molecules acquire additional energy on the surface of the charged particles, enabling reactions that are not possible in space. Galactic cosmic rays are the main source of ions in the polar stratosphere, their equilibrium concentration at altitudes of 15 to 25 km can reach up ~ (1-5) × 10 3 ions/cm 3 . Estimations show that if the ozone destruction in the regime of "collision" with ions then the lifetime of ozone will vary from 10 days to 2 months. We suppose that alongside with the chlorine mechanism of ozone destruction there is a mechanism of ozone decay on a charged particle which can act also at those latitudes and altitudes where chlorine oxide ClO is absent, as well as in the night conditions. Here, we demonstrated the close connection of photochemical processes with the dynamic, electrical and condensational phenomena in the stratosphere, in particular, with the accumulation of unipolar charged particles on the upper and lower boundaries of the polar stratospheric clouds and aerosol layers as a result of the activity of the global electric circuit.

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Thermal decomposition of ozone

Cited by 11 publications

References 15 publications

The reactions of O(³P) with ozone and carbonyl sulfide

The reactions of O(³P) with ozone and carbonyl sulfide

Study of water disinfection by analyzing the ozone decomposition process

The Role of the Dipole Interaction of Molecules with Charged Particles in the Polar Stratosphere

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Thermal decomposition of ozone

Cited by 11 publications

References 15 publications

The reactions of O(3P) with ozone and carbonyl sulfide

The reactions of O(3P) with ozone and carbonyl sulfide

Study of water disinfection by analyzing the ozone decomposition process

The Role of the Dipole Interaction of Molecules with Charged Particles in the Polar Stratosphere

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The reactions of O(³P) with ozone and carbonyl sulfide

The reactions of O(³P) with ozone and carbonyl sulfide