Portlandite 96% Sigma-Aldrich -10C 2b CO2 115min | GhoSST | SSHADE

Sample

Name: Portlandite 96% Sigma-Aldrich -10C 2b CO2 115min

Owner of sample

Database

GhoSST

Experimentalists

Alexandre Garenne

Origin of sample

Date: 2011-05-12
Provider: IPAG
Previous sample: Portlandite 96% Sigma-Aldrich -10C 2b CO2 60min
Parent sample: Portlandite 96% Sigma-Aldrich -10C vacuum

Physical characteristics

Substrate material: KBr window, 3mm thickness, 12mm diameter
Comments: dispersion of agglomerate grains on the substrate

Sample environment: Temperature

Temperature: -10.0 $\pm$ 0.1 $^{\circ}C$
Time at T: 125.0 $\pm$ 1.0 $min$
Temperature max: -10.0 $\pm$ 0.1 $^{\circ}C$
Time at Tmax: 125.0 $min$

Sample environment: Fluid

Type

molecular gas

Fluids

CO2 gas N48 - Air Liquide 100.0 $\pm$ 0.1 %

Fluid temperature

-1.0e+01

$\pm$ 0.1

$^{\circ}C$

Fluid pressure

2.0

$\pm$ 0.1

$bar$

Time at T, P, pH

115.0

$\pm$ 1.0

$min$

Documentation and publication

Publications

Garenne et al., 2013, Planet. Space Sci., 76, 28 - 41

Layers in sample

Number

1

Layers

Portlandite 96% Sigma-Aldrich

Sample processings

Title

Carbonation process of portlandite with 2 bar of CO2 gas at -10°C during 115 min

Precursors

Samples

Portlandite 96% Sigma-Aldrich -10C 2b CO2 60min

Produced sample

Materials

Portlandite - Calcite - Aragonite

Processing steps

Step	Chronology	Date	Type	Process	Changes
#1	on parent sample	2011-05-12	chemical	2 bar of CO2 gas in contact with sample during 115 min at -10°C	carbonation process, decrease of mass fraction of Portlandite, increase of mass fraction of Calcite and Aragonite. Reaction: CO2 + Ca(OH)2 => CaCO3 + H2O