Journal
CLAYS AND CLAY MINERALS
Volume 54, Issue 2, Pages 153-164Publisher
CLAY MINERALS SOCIETY
DOI: 10.1346/CCMN.2006.0540202
Keywords
aqueous solubilities; calorimetry; enthalpy of formation; layered double hydroxides; Ni precipitation
Ask authors/readers for more resources
The formation of mixed-metal-Al layered double hydroxide (LDH) phases similar to hydrotalcite has been identified as a significant mechanism for immobilization of trace metals in some environmental systems. These precipitate phases become increasingly stable as they age, and their formation may therefore be an important pathway for sequestration of toxic metals in contaminated soils. However, the lack of thermodynamic data for LDH phases makes it difficult to model their behavior in natural systems. In this work, enthalpies of formation for Ni LDH phases with nitrate and sulfate interlayers were determined and compared to recently published data on carbonate interlayer LDHs. Differences in the identity of the anion interlayer resulted in substantial changes in the enthalpies of formation of the LDH phases, in the order of increasing enthalpy carbonate
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available