Portlandite 96% Sigma-Aldrich Tambient air | GhoSST | SSHADE

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Sample

Name: Portlandite 96% Sigma-Aldrich Tambient air

Owner of sample

Database

GhoSST

Experimentalists

Alexandre Garenne

Origin of sample

Date: 2011-05-12
Provider: IPAG

Physical characteristics

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

Sample environment: Temperature

Temperature: 22.0 $\pm$ 2.0 $^{\circ}C$
Time at T: 10.0 $\pm$ 5.0 $min$
Temperature max: 22.0 $\pm$ 2.0 $^{\circ}C$
Time at Tmax: 10.0 $min$

Sample environment: Fluid

Type

ambient air

Fluids

Dry standard atmospheric air 98.8 $\pm$ 0.7 %
$H_2O$ 1.2 $\pm$ 0.7 %

Fluid temperature

22.0

$\pm$ 2.0

$^{\circ}C$

Fluid pressure

1.0

$bar$

Time at T, P, pH

10.0

$\pm$ 5.0

$min$

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

Freezing and pumping ambiant air in an environmental chamber for carbonation process on portlandite

Precursors

Matters

Portlandite 96% Sigma-Aldrich

Produced sample

Materials

Portlandite - Calcite - Aragonite

Processing steps

Step	Chronology	Date	Type	Process	Changes
#1	during layer formation	2011-05-12	layer formation	manual compression	slightly compressed grains. Dispersed agglomerate of grains placed in the cell under ambient temperature and air
#2	after sample formation	2011-05-12	chemical	kept 10 min under ambient temperature and air (H2O and CO2)	The carbonation process started during and after sample preparation under ambiant air. slight reaction of CO2 with Portlandite