Spectrum

MIR absorbance spectrum of Portlandite at 0°C under vacuum

Title
MIR absorbance spectrum of Portlandite at 0°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
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 0C 2b CO2 0min
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
2011-05-18
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 0°C under vacuum
Analysis
raw transmission spectra converted in absorbance, without baseline correction
Quality flag
4
Validator(s)