Portlandite 96% Sigma-Aldrich 0C 1b CO2 420min | GhoSST | SSHADE

Sample

Name: Portlandite 96% Sigma-Aldrich 0C 1b CO2 420min

Owner of sample

Database

GhoSST

Experimentalists

Alexandre Garenne

Origin of sample

Date: 2011-04-22
Provider: IPAG
Previous sample: Portlandite 96% Sigma-Aldrich 0C 1b CO2 360min
Parent sample: Portlandite 96% Sigma-Aldrich 0C 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: 0.0 $\pm$ 0.1 $^{\circ}C$
Time at T: 430.0 $\pm$ 1.0 $min$
Temperature max: 22.0 $\pm$ 2.0 $^{\circ}C$
Time at Tmax: 10.0 $min$

Sample environment: Fluid

Type

molecular gas

Fluids

Dry standard atmospheric air 49.4 $\pm$ 0.35 %
CO2 gas N48 - Air Liquide 50.0 $\pm$ 1.0 %
$H_2O$ 0.6 $\pm$ 0.35 %

Fluid temperature

0.0e+00

\pm

$\pm$ 0.1

^{\circ} C

$^{\circ}C$

Fluid pressure

2.0

\pm

$\pm$ 0.1

b a r

$bar$

Time at T, P, pH

420.0

\pm

$\pm$ 1.0

m i n

$min$

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 2 bar of mixed ambiant air/CO2 gas at 0°C during 420 min

Precursors

Materials

Portlandite - Calcite - Aragonite

Produced sample

Materials

Portlandite - Calcite - Aragonite

Processing steps

Step	Chronology	Date	Type	Process	Changes
#1	on parent sample	2011-04-22	chemical	2 bar of CO2 gas mixed with ambiant air in contact with sample during 420 min at 0°C	carbonation process, decrease of mass fraction of Portlandite, increase of mass fraction of Calcite and Aragonite. Reaction: CO2 + Ca(OH)2 => CaCO3 + H2O