Experiment: Browne Lab_20210405_Octamethylcyclotetrasiloxane/Chlorine/Acetonitrile_Hydroxyl radical_No Seed

Experiment

Name: Browne Lab_20210405_Octamethylcyclotetrasiloxane/Chlorine/Acetonitrile_Hydroxyl radical_No Seed
Date: 2021-04-05

Organization
Browne Lab

Chamber
Browne Lab Main Chamber

Experiment Set
D4 Experiments

Goals
We oxidized D4 using Cl2 as the oxidant precursor to promote RO2 radical isomerization/autooxidation reactions.

Summary
The siloxanol was the main product formed.

Experiment Details

Categories:

  • Gas phase chemical reaction
Temperature: 25
Relative Humidity: 0-5
Seeded Experiment: No
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 0-5
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: 1e6 (molecules_per_cubic_centimeter)
RO2 Main Fate: Autoxidation/Isomerization
RO2 Lifetime: 40 (Seconds)
Pressure: 860

Data Sets

ID Instrument File  
3984 Toluene CIMS D4Cl2_20210405.csv

Data Set plots
Choose a file: Choose the X-Axis:

Experiment Set Details

Name: D4 Experiments
Time format and units: CIMS time is in number of seconds since Jan 1st, 1904 in UTC. NOx data is in M/D/Y Hr:Min:Sec format in local time.
Description:
CIMS and NOx data (if available) for measurements of D4 oxidation with conditions favoring different peroxy radical fates. Three radical precursors were used, HONO, H2O2, and Cl2.

Collaborators:

  • Mitchell Alton University of Colorado at Boulder
  • Eleanor Browne University of Colorado at Boulder

Download

Download this Experiment (14.33 KB)

Contacts

Principal investigator:

Eleanor Browne
Phone: 303-735-7685
E-mail: eleanor.browne@colorado.edu
OrcID: 0000-0002-8076-9455

Data Manager:

Mitchell Alton
E-mail: mitchell.alton@colorado.edu

Reactants

Reactant Compound type Concentration Concentration units
Octamethylcyclotetrasiloxane (11169) 80 Parts Per Billion
Chlorine (24526) 15 Parts Per Billion
Acetonitrile (6342)
  • Nitrile
 1 Parts Per Million

D4Cl2_20210405_Logs.csv Timeline

Acquisition started (ID# 0) 3700477165
chamber background 3700477181
adding Cl2 3700477280
adding D4 3700477484
done adding Cl2 3700477989
letting everything mix 3700478037
flow off into CIMS 3700478523
8 370nm bulbs on 3700479002
End of acquisition 3700480772
Acquisition started (ID# 1) 3700480772
End of acquisition 3700484379
Acquisition started (ID# 2) 3700484379
lights off 3700487506
End of acquisition 3700487986
Acquisition started (ID# 3) 3700487986
Acquisition aborted after 150 complete writes. 7 additional bufs in the incomplete last write. 3700489498

Citations
Cite this experiment:

Characterizations
Light Flux Characterizations:
(None)
Particle Loss Characterizations:
(None)
Vapor Loss Characterizations:
(None)

Chamber Details

Name: Browne Lab Main Chamber
Volume in cubic meters: 1
Shape:
Surface area in cubic meters: 8
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness: 2
Replacement date: 2017-10-01
Replacement frequency: As needed
Cleaning method: Flushing with air Flushing with air with UV lights on Oxidation
o3 background:
nox background:
Particle background in micrograms per cubic meter:
Air filtration method: Uses Aadco clean air
Mixing method: 0
Mixing method material:
Temparature Control: No
Temparature measurements recorded: No
Temparature range (min degrees celcius):
Temparature range (max degrees celcius):
Humidity Control: Yes
Humidity Measurements Recorded: Yes
Relative humidity range (min percent): 0
Relative humidity range (max percent): 80
Particle experiment capability: 1
Lights: Yes
Light source type(s): Up to 10 fluorescent bulbs centered at 370nm, Up to 4 fluorescent bulbs centered at 254nm
Supplemental information:
Additional Notes: