Low temperature kinetics and theoretical studies of the reaction CN + CH3NH2: a potential source of cyanamide and methyl cyanamide in the interstellar medium

2018 ◽  
Vol 20 (8) ◽  
pp. 5478-5489 ◽  
Author(s):  
Chantal Sleiman ◽  
Gisèle El Dib ◽  
Marzio Rosi ◽  
Dimitrios Skouteris ◽  
Nadia Balucani ◽  
...  
Keyword(s):  
Low Temperature ◽  
Interstellar Medium ◽  
Theoretical Studies ◽  
Potential Source ◽  
Low Temperature Kinetics

Combined experimental/theoretical studies demonstrate that the reaction between cyano radicals and methylamine is an efficient formation route of interstellar cyanamide.

Crossed-Beam Dynamics, Low-Temperature Kinetics, and Theoretical Studies of the Reaction S(1D) + C2H4†

2009 ◽  
Vol 113 (52) ◽  
pp. 15328-15345 ◽  
Author(s):  
Francesca Leonori ◽  
Raffaele Petrucci ◽  
Nadia Balucani ◽  
Piergiorgio Casavecchia ◽  
Marzio Rosi ◽  
...  
Keyword(s):  
Low Temperature ◽  
Beam Dynamics ◽  
Theoretical Studies ◽  
Low Temperature Kinetics

Low temperature kinetics, crossed beam dynamics and theoretical studies of the reaction S(1D) + CH4 and low temperature kinetics of S(1D) + C2H2

2011 ◽  
Vol 13 (18) ◽  
pp. 8485 ◽  
Author(s):  
Coralie Berteloite ◽  
Sébastien D. Le Picard ◽  
Ian R. Sims ◽  
Marzio Rosi ◽  
Francesca Leonori ◽  
...  
Keyword(s):  
Low Temperature ◽  
Beam Dynamics ◽  
Theoretical Studies ◽  
Low Temperature Kinetics ◽  
Kinetics Of

scholarly journals Pressure dependent low temperature kinetics for CN + CH3CN: competition between chemical reaction and van der Waals complex formation

2016 ◽  
Vol 18 (22) ◽  
pp. 15118-15132 ◽  
Author(s):  
Chantal Sleiman ◽  
Sergio González ◽  
Stephen J. Klippenstein ◽  
Dahbia Talbi ◽  
Gisèle El Dib ◽  
...  
Keyword(s):  
Low Temperature ◽  
Complex Formation ◽  
Gas Phase ◽  
Rate Coefficient ◽  
Flow Reactor ◽  
Slow Flow ◽  
Phase Reaction ◽  
Gas Phase Reaction ◽  
Low Temperature Kinetics ◽  
Temperature And Pressure

The gas phase reaction between the CN radical and acetonitrile CH3CN was investigated experimentally with a CRESU apparatus and a slow flow reactor as well as theoretically to explore the temperature and pressure dependence of its rate coefficient from 354 K down to 23 K.

scholarly journals Low temperature gas phase reaction rate coefficient measurements: Toward modeling of stellar winds and the interstellar medium

2019 ◽  
Vol 15 (S350) ◽  
pp. 382-383
Author(s):  
Niclas A. West ◽  
Edward Rutter ◽  
Mark A. Blitz ◽  
Leen Decin ◽  
Dwayne E. Heard
Keyword(s):  
Low Temperature ◽  
Interstellar Medium ◽  
Gas Phase ◽  
Low Temperatures ◽  
Reaction Rate ◽  
Rate Coefficient ◽  
Building Blocks ◽  
Rate Coefficients ◽  
Stellar Winds ◽  
Phase Reaction

AbstractStellar winds of Asymptotic Giant Branch (AGB) stars are responsible for the production of ∼85% of the gas molecules in the interstellar medium (ISM), and yet very few of the gas phase rate coefficients under the relevant conditions (10 – 3000 K) needed to model the rate of production and loss of these molecules in stellar winds have been experimentally measured. If measured at all, the value of the rate coefficient has often only been obtained at room temperature, with extrapolation to lower and higher temperatures using the Arrhenius equation. However, non-Arrhenius behavior has been observed often in the few measured rate coefficients at low temperatures. In previous reactions studied, theoretical simulations of the formation of long-lived pre-reaction complexes and quantum mechanical tunneling through the barrier to reaction have been utilized to fit these non-Arrhenius behaviours of rate coefficients.Reaction rate coefficients that were predicted to produce the largest change in the production/loss of Complex Organic Molecules (COMs) in stellar winds at low temperatures were selected from a sensitivity analysis. Here we present measurements of rate coefficients using a pulsed Laval nozzle apparatus with the Pump Laser Photolysis - Laser Induced Fluorescence (PLP-LIF) technique. Gas flow temperatures between 30 – 134 K have been produced by the University of Leeds apparatus through the controlled expansion of N2 or Ar gas through Laval nozzles of a range of Mach numbers between 2.49 and 4.25.Reactions of interest include those of OH, CN, and CH with volatile organic species, in particular formaldehyde, a molecule which has been detected in the ISM. Kinetics measurements of these reactions at low temperatures will be presented using the decay of the radical reagent. Since formaldehyde and the formal radical (HCO) are potential building blocks of COMs in the interstellar medium, low temperature reaction rate coefficients for their production and loss can help to predict the formation pathways of COMs observed in the interstellar medium.

Enhanced HCl removal from CO2-rich mixture gases by CuOx/Na2CO3 porous sorbent at low temperature: Kinetics and forecasting

2020 ◽  
Vol 381 ◽  
pp. 122738 ◽  
Author(s):  
Shuoyang Liang ◽  
Shiye Liu ◽  
Zhengyun Fan ◽  
Weidong Zhang ◽  
Min Guo ◽  
...  
Keyword(s):  
Low Temperature ◽  
Rich Mixture ◽  
Porous Sorbent ◽  
Low Temperature Kinetics ◽  
Hcl Removal
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