MIR absorbance spectrum of Portlandite at -10°C under vacuum
- Title
- MIR absorbance spectrum of Portlandite at -10°C under vacuum
- DOI
- 10.26302/SSHADE/EXPERIMENT_AG_20130923_000
- Data reference
- Garenne, Alexandre (2011): Evolution with time of the MIR absorbance spectrum of Portlandite at -10, 0 and 10°C in contact with 2 bar CO2 gas. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_AG_20130923_000
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- absorbance
- Instrument
- Brucker Vertex 70 + Hyperion 3000 – micro-transmission Mid-IR
- Sample holder
- temperature, pressure and gas controled environmental cell (IR-CryoCell),cooled by liquid nitrogen, KBr windows
- Standard medium
- vacuum
- Observation mode
- spectrum
- Spectral range type(s)
- MIR
- Valid spectral range(s)
-
Min - Max ($cm^{-1}$) Sampling ($cm^{-1}$) Resolution ($cm^{-1}$) Position accuracy ($cm^{-1}$) Absorption edge #1 500.0 - 2220.0 1.928364834 4.0 0.1 #2 2400.0 - 4000.0 1.928364834 4.0 0.1 - Scan number
- 320
Definition: incidence and emergence angles are positive with origin at nadir. Emergence angle in transmission is larger than 90° (=180°-i).
- Observation geometry
- direct
- Observation mode
- fixed angles
- Observation mode
- single spot
- Spots number
- 1
- Objective type
- objective X15
- Image size
- 50.0 x 50.0 ${\mu}m$
- Resolutions
- 50.0 ${\pm}$ 20.0 ${\mu}m$
- Name
- Portlandite 96% Sigma-Aldrich -10C vacuum
- Changes
- Adsorption of water and condensation of ice on the minerals, some loss of adsorbed water and ice before carbonation process and reduction of portlandite proportion
- Experiment
- Evolution with time of the MIR absorbance spectrum of Portlandite at -10, 0 and 10°C in contact with 2 bar CO2 gas
- Date begin
- 2011-05-12
- Release date
- 2018-01-31 23:51:01 UTC+0000
- Version (Date)
- #1 (2018-01-31 23:51:01 UTC+0000, Updated: 2020-01-28 19:27:59 UTC+0000)
- History
-
Date Mode Version Status Comments 2017-07-04 10:13:32 UTC+0000 first import #1 valid version 2013-10-03: new MIR transmission spectrum of Portlandite at -10°C under vacuum
- Analysis
- raw transmission spectra converted in absorbance, without baseline correction. CO2 gas absorptions in the ranges 645-710, 2230-2400, 3670-3750 cm-1
- Quality flag
- 4
- Validator(s)