Palagonite JSC Mars-1 with 5.16% adsorbed H2O | GhoSST

Sample

Database

Experimentalists

Origin of sample

Temperature: 243.1 $\pm$ 1.0 $K$
Time at T: 0.0 $min$
Temperature max: 443.0 $K$
Time at Tmax: 600.0 $min$
Comments: Sample temperature error is mostly due to possible vertical temperature gradient in the sample. Temperature reading accuracy and stability is 0.1K - Small pressure applied during sample flattening with a spatula

Type

molecular gas

Fluids

Fluid temperature

243.0 $\pm$ 2.0 $K$

Fluid pressure

0.0e+00 $\pm$ 5.0e-06 $bar$

Comments

P/Ps = 0.00000 (+/)- 0.000000 - Fluid temperature error depicts estimated thermal gradient of gas in the cell

Publications

Number

Arrangement

The sample holder is filled to rim with the non-compacted sample powder

Layers

Title

Removing of adsorbed/interlayer water of Palagonite under vacuum and heated until 443K

Matters

Sample

Palagonite JSC Mars-1 with 5.16% adsorbed H2O (this sample)

Processing steps

Step	Chronology	Date	Type	Process	Changes
#1	after sample formation	2007-01-01	mechanical	surface of sample flattened with a spatula to obtain a smooth surface with limited powder compaction	limited compaction of the surface
#2	after sample formation	2007-01-01	thermal	the sample is heated at 443 K following a temperature ramp of 1 h while the chamber is open to air. After 1 h at 443 K, the chamber is closed and heating stops. Sample temperature decreases for a few hours to reach the temperature of the cold room (263 K)	removing of adsorbed/interlayer H2O
#3	after sample formation	2007-01-01	fluid physical	simulation chamber is slowly pumped down to pressure lower than 10-6 mbar	Removing of adsorbed/interlayer H2O. Air to vacuum (mostly residual H2O from sample)
#4	after sample formation	2007-01-01	thermal	under secondary vacuum, the sample is heated again at 446 K during a minimum of 10 h	removing of adsorbed/interlayer H2O