Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Günter Kahr"'
Publikováno v:
Soil Science. 171:675-694
Pores in feldspars, the most common silicates, are of great interest for the estimation of internal weathering reactions. Here, we compare three different methods to characterize the porosity of feldspars from four soils of granite and saprolite deve
Publikováno v:
Applied Clay Science. 23:195-202
In the present work, the influence of gamma-irradiation (1.1 MGy, 60 Co) on physicochemical parameters (“crystallinity”, specific surface, cation exchange capacity, main layer charge) of various clay minerals (montmorillonite, illite and samples
Publikováno v:
Clay Minerals. 37:351-366
Two soils, a haplic Podzol and a dystric Cambisol, developed from post-glacial tills, were studied with respect to their soil chemistry and clay mineralogy. Although the state factors (age, geology, topography, climate) of soil formation were almost
Publikováno v:
Journal of Applied Polymer Science. 83:2175-2183
A PDMS network, synthesized from a vinyl-terminated precursor, was reinforced by plate-like montmorillonite (volclay) particles with different surface cations. The optimal ratio of crosslinker-to-PDMS precursor was ascertained from the mechanical pro
Autor:
Katja Emmerich, Günter Kahr
Publikováno v:
Applied Clay Science. 20:119-127
Na+-saturated samples (0.97 A) are located on fully exchangeable and hydratable interlayer positions after transformation and the montmorillonite retained its interlamellar swellability. Both varieties of the montmorillonite are different in their rh
Reversible collapse and Mg2+ release of de- and rehydroxylated homoionic cis-vacant montmorillonites
Publikováno v:
Applied Clay Science. 19:143-154
Homoionic Na + , Ca 2+ , Sr 2+ , Li + , Cu 2+ and Zn 2+ samples of the < 2 μm fraction of a cis-vacant montmorillonite from Linden (Bavaria) were steam treated at 200°C ( 1.5 MPa), 240°C ( 3.3 MPa) and 300°C ( 8.0 MPa) after dehydroxylation at te
Autor:
Günter Kahr, Fritz T. Madsen
Publikováno v:
Applied Clay Science. 9:327-336
Dye cations like methylene blue will mainly adsorb on clay minerals by cation exchange. Therefore, the methylene blue adsorption is depending on the exchangeable cations of the clay mineral, on the pH and on the dye cation concentration. The cation e
Publikováno v:
Hazardous Waste and Hazardous Materials. 12:149-166
The advective transport and diffusive transport of phenol through a soil liner material improved with organophilic bentonites was studied. The results were compared with the transport of phenol through the unimproved soil, a silty sand with a natural
Publikováno v:
Clay Minerals. 29:205-213
To investigate the long-term stability of bentonite under final disposal conditions of highly radioactive waste, K-bentonites from Kinnekulle (Sweden) and from the Marias River Formation in the Montana disturbed belt (USA) were studied. After separat
Publikováno v:
Scopus-Elsevier
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