Water and carbon dioxide sorption properties of natural zeolites and clay minerals at martian surface temperature and pressure conditions
The verified presence of smectites, natural zeolites, sulfates and other water-bearing minerals on the martian surface have encouraged us to study their water and CO2 adsorption behaviour under conditions close to martian equatorial surface temperature and pressure. The results for smectites and zeolites show about 2.5-25 wt％ of (partially mobile) water at low temperatures and a very low partial pressure of 0.001 mbar. Mars relevant minerals such as nontronite, montmorillonite, clinoptilolite and chabazite can adsorb water even in a more than thousandfold surplus (6 mbar) of carbon dioxide. The presence of water in equatorial latitudes might be of importance for water involved chemistry and hypothetical exobiological activity on Mars.
J. Janchen D. T. F. M(o)hlmann H. Stach
Technische Fachhochschule Wildau (University of Applied Sciences), Bahnhofstr. 1, 15754 Wildau, Germ DLR Institute of Planetary Research, Rutherfordstr. 2, 12489 Berlin-Adlershof, Germany ZeoSolar e.V., Volmerstr. 13, 12489 Berlin-Adlershof, Germany
国际会议
北京
英文
2007-08-12（万方平台首次上网日期，不代表论文的发表时间）