Portlandite 96% Sigma-Aldrich 25C 0,1b CO2 10min | GhoSST | SSHADE

Sample

Name: Portlandite 96% Sigma-Aldrich 25C 0,1b CO2 10min

Owner of sample

Database

GhoSST

Experimentalists

Alexandre Garenne

Origin of sample

Date: 2011-05-27
Provider: IPAG
Previous sample: Portlandite 96% Sigma-Aldrich 25C 0,1b CO2 4min
Parent sample: Portlandite 96% Sigma-Aldrich 25C 0,1b CO2 0min

Physical characteristics

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

Sample environment: Temperature

Temperature: 25.0 $\pm$ 0.1 $^{\circ}C$
Time at T: 20.0 $\pm$ 1.0 $min$
Temperature max: 25.0 $\pm$ 0.1 $^{\circ}C$
Time at Tmax: 20.0 $min$

Sample environment: Fluid

Type

molecular gas

Fluids

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

Fluid temperature

25.0

$\pm$ 0.1

$^{\circ}C$

Fluid pressure

0.1

$\pm$ 0.02

$bar$

Time at T, P, pH

10.0

$\pm$ 1.0

$min$

Documentation and publication

Publications

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

Layers in sample

Number

1

Layers

Layer #1

Sample processings

Title

Carbonation process of portlandite with 0.1 bar of CO2 gas at 25°C during 10 min

Precursors

Materials

Portlandite 96% Sigma-Aldrich 25C 0,1b CO2 4min

Produced sample

Materials

Portlandite 96% Sigma-Aldrich 25C 0,1b CO2 10min

Processing steps

Step	Chronology	Date	Type	Process	Changes
#1	on parent sample	2011-05-27	chemical	0,1 bar of CO2 gas in contact with sample during 10 min at 25°C	carbonation process, decrease of mass fraction of Portlandite, increase of mass fraction of Calcite and Aragonite. Reaction: CO2 + Ca(OH)2 => CaCO3 + H2O