Search results for: M. Cazaunau

Items from 1 to 8 out of 8 results

article

Atmospheric degradation of pyridine: UV absorption spectrum and reaction with OH radicals and O3

M. Errami, G. El Dib, M. Cazaunau, E. Roth, more

Chemical Physics Letters > 2016 > 662 > C > 141-145

The UV absorption spectrum of pyridine and its gas phase reactions with OH radicals and O₃ were investigated. UV absorption cross-sections were determined by using a D₂-lamp system in the range 200–350nm. The kinetic studies were carried out at room temperature and atmospheric pressure of purified air. The rate coefficient for the reaction of pyridine with OH was determined relative to that with acetone...

article

On-road measurements of NMVOCs and NOx: Determination of light-duty vehicles emission factors from tunnel studies in Brussels city center

W. Ait-Helal, A. Beeldens, E. Boonen, A. Borbon, more

Atmospheric Environment > 2015 > 122 > C > 799-807

Emission factors (EFs) of pollutants emitted by light-duty vehicles (LDV) were investigated in the Leopold II tunnel in Brussels city center (Belgium), in September 2011 and in January 2013, respectively. Two sampling sites were housing the instruments for the measurements of a large range of air pollutants, including non-methane volatile organic compounds (NMVOCs), nitrogen oxides (NO_x) and carbon...

article

Construction of a photocatalytic de-polluting field site in the Leopold II tunnel in Brussels

E. Boonen, V. Akylas, F. Barmpas, A. Boréave, more

Journal of Environmental Management > 2015 > 155 > Complete > 136-144

Within the framework of the European Life+-funded project PhotoPAQ (Demonstration of Photocatalytic remediation Processes on Air Quality), which was aimed at demonstrating the effectiveness of photocatalytic coating materials on a realistic scale, a photocatalytic de-polluting field site was set up in the Leopold II tunnel in Brussels, Belgium. For that purpose, photocatalytic cementitious materials...

article

Rate coefficients for the reaction of ozone with 2- and 3-carene

H. Chen, Y. Ren, M. Cazaunau, V. Daële, more

Chemical Physics Letters > 2015 > 621 > C > 71-77

The rate coefficients for the reactions of ozone with 2-carene and 3-carene have been measured at 760Torr of air and 299±6K using both absolute and relative methods. The data obtained are (in units of ×10⁻¹⁷cm³molecule⁻¹s⁻¹): k(2-carene)=23.8±1.0, k(3-carene)=3.7±0.2. The present work supplements the kinetic database of 2-carene and 3-carene using varied conventional experimental methods. The results...

article

Photocatalytic abatement results from a model street canyon

M. Gallus, R. Ciuraru, F. Mothes, V. Akylas, more

Environmental Science and Pollution Research > 2015 > 22 > 22 > 18185- 18196

During the European Life+ project PhotoPAQ (Demonstration of Photocatalytic remediation Processes on Air Quality), photocatalytic remediation of nitrogen oxides (NO_x), ozone (O₃), volatile organic compounds (VOCs), and airborne particles on photocatalytic cementitious coating materials was studied in an artificial street canyon setup by comparing with a colocated nonactive reference canyon of the...

article

Reactions of OH and Cl with isopropyl formate, isobutyl formate, n-propyl isobutyrate and isopropyl isobutyrate

Y.J. Zhang, P. Liang, Z.H. Jiang, M. Cazaunau, more

Chemical Physics Letters > 2014 > 602 > Complete > 68-74

The rate coefficients for the reactions of OH with isopropyl formate, isobutyl formate, n-propyl isobutyrate and isopropyl isobutyrate have been determined using both absolute and relative methods. The relative rate method has been also used to measure the room temperature rate coefficient for the reaction of Cl with the same esters. In addition, a series of runs conducted on the OH-initiated oxidation...

article

Gas-phase rate coefficients for the reaction of 3-hydroxy-2-butanone and 4-hydroxy-2-butanone with OH and Cl

L. Messaadia, G. El Dib, M. Lendar, M. Cazaunau, more

Atmospheric Environment > 2013 > 77 > Complete > 951-958

The reactions of the OH radicals and the Cl atoms with 3-hydroxy 2-butanone (3H2B) and 4-hydroxy 2-butanone (4H2B) were investigated in the gas-phase using relative rate method. The kinetic study on the OH-reactions was carried out using a Pyrex atmospheric chamber at 600–760 Torr of purified air. The temperature ranges were 298–338 K for 3H2B and 278–333 K for 4H2B. A slight negative dependence of...

article

Absolute and relative rate constants for the reactions of OH and Cl with pentanols

M. Lendar, A. Aissat, M. Cazaunau, V. Daële, more

Chemical Physics Letters > 2013 > 582 > Complete > 38-43

The rate constants for the reactions of OH with three pentanols have been determined in the range 267−373K and P=100Torr. The data obtained were (in units of cm ³ molecule ⁻¹ s ⁻¹ ): k(1-pentanol)=(6.7±3.8)×10 ⁻¹² exp [(132±176)/T], k(2-pentanol)=(5.2±1.8)×10 ⁻¹² exp [(218±116)/T], k(3-pentanol)=(5.8±2.3)×10 ⁻¹² exp [(164±118)/T]. The present work provides...

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Keywords

KINETICS (2)
OH RADICALS (2)
PHOTOCATALYSIS (2)
AIR POLLUTION (1)
AIR PURIFICATION (1)
ARRHENIUS EXPRESSION (1)
ATMOSPHERIC LIFETIMES (1)
ATMOSPHERIC SIMULATION CHAMBER (1)
CEMENTITIOUS COATING (1)
CL ATOMS (1)
HYDROXYKETONES (1)
LIGHT-DUTY VEHICLES (1)
NITROGEN CONTAINING AROMATIC COMPOUNDS (1)
NITROGEN OXIDES (1)
NON-METHANE VOLATILE ORGANIC COMPOUNDS (1)
OUTDOOR APPLICATION (1)
OZONE (1)
RATE COEFFICIENT (1)
ROAD TUNNEL STUDY (1)
ROAD TUNNELS (1)
STREET CANYON (1)
TIO2 (1)
TIO2 (1)
TRAFFIC EMISSION FACTOR (1)
TROPOSPHERIC LIFETIMES (1)
UV ABSORPTION CROSS-SECTIONS (1)
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Elsevier (7)
Springer (1)

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Search results for: M. Cazaunau

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