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Title: Thermodynamics of manganese oxides: Sodium, potassium, and calcium birnessite and cryptomelane

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [2]
  1. Peter A. Rock Thermochemistry Laboratory, University of California, Davis, CA 95616,, Nanomaterials in the Environment, Agriculture, and Technology, University of California, Davis, CA 95616,, Pratt School of Engineering, Duke University, Durham NC 27708
  2. Peter A. Rock Thermochemistry Laboratory, University of California, Davis, CA 95616,, Nanomaterials in the Environment, Agriculture, and Technology, University of California, Davis, CA 95616,

Significance Manganese oxides with layer and tunnel structures occur widely in the natural environment and inspire technological applications. In addition to having variable compositions, these structures often are found as small particles (nanophases). This study explores, using experimental thermochemistry, the role of composition, oxidation state, structure, and surface energy in the thermodynamic stability of synthetic birnessites and cryptomelane. These quantitative thermodynamic findings help explain and support qualitative observations of phase-transformation patterns gathered over the past five decades.

Research Organization:
Univ. of California, Davis, CA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
FG02-97ER14749
OSTI ID:
1341471
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 7 Vol. 114; ISSN 0027-8424
Publisher:
Proceedings of the National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English

References (35)

Basics of Analytical Chemistry and Chemical Equilibria book January 2013
Progress and new directions in high temperature calorimetry revisited journal April 1997
The oxidation state of manganese in marine sediments and ferromanganese nodules journal June 1984
Characterization of the manganese oxide produced by pseudomonas putida strain MnB1 journal July 2003
Characterization of an Inorganic Cryptomelane Nanomaterial Synthesized by a Novel Process Using Transmission Electron Microscopy and X-Ray Diffraction journal July 2008
Energetics of Bulk and Nano-Akaganeite, β-FeOOH:  Enthalpy of Formation, Surface Enthalpy, and Enthalpy of Water Adsorption journal April 2006
Surface Energy and Thermodynamic Stability of γ-Alumina:  Effect of Dopants and Water journal April 2006
Thermochemistry of Framework and Layer Manganese Dioxide Related Phases journal February 1998
A Review of Porous Manganese Oxide Materials journal October 1998
Determination of Uranyl Incorporation into Biogenic Manganese Oxides Using X-ray Absorption Spectroscopy and Scattering journal February 2006
Adsorption of Gases in Multimolecular Layers journal February 1938
Individual Activity Coefficients of Ions in Aqueous Solutions journal September 1937
Heat Capacity Studies of Surface Water Confined on Cassiterite (SnO 2 ) Nanoparticles journal February 2012
Effects of Increased Surface Area and Chemisorbed H 2 O on the Relative Stability of Nanocrystalline γ-Al 2 O 3 and α-Al 2 O 3 journal January 1997
Surface Water and the Origin of the Positive Excess Specific Heat for 7 nm Rutile and Anatase Nanoparticles journal April 2006
Layered manganese oxides for water-oxidation: alkaline earth cations influence catalytic activity in a photosystem II-like fashion journal January 2012
Uranium redox transition pathways in acetate-amended sediments journal March 2013
Energetic basis of catalytic activity of layered nanophase calcium manganese oxides for water oxidation journal May 2013
Rapidly reversible redox transformation in nanophase manganese oxides at room temperature triggered by changes in hydration journal April 2014
Energetics of nanocrystalline TiO2 journal March 2002
Manganese oxide minerals: Crystal structures and economic and environmental significance journal March 1999
Nano-sized manganese oxides as biomimetic catalysts for water oxidation in artificial photosynthesis: a review journal May 2012
Biotransformation of manganese oxides by fungi: solubilization and production of manganese oxalate biominerals: Solubilization and transformation of manganese oxides by fungi journal May 2012
Energy Crossovers in Nanocrystalline Zirconia: Energy Crossovers in Nanocrystalline Zirconia journal December 2004
Progress and New Directions in Calorimetry: A 2014 Perspective journal October 2014
Nanophase Transition Metal Oxides Show Large Thermodynamically Driven Shifts in Oxidation-Reduction Equilibria journal October 2010
Surface Energies and Thermodynamic Phase Stability in Nanocrystalline Aluminas journal August 1997
BIOGENIC MANGANESE OXIDES: Properties and Mechanisms of Formation journal May 2004
The synthesis of birnessite, cryptomelane, and some other oxides and hydroxides of manganese journal December 1971
Ion Exchange, Thermal Transformations, and Oxidizing Properties of Birnessite journal January 1986
Thermochemistry of New, Technologically Important Inorganic Materials journal May 1997
Structure of synthetic monoclinic Na-rich birnessite and hexagonal birnessite; I, Results from X-ray diffraction and selected-area electron diffraction journal October 1997
Birnessite polytype systematics and identification by powder X-ray diffraction journal May 2007
Time-resolved structural analysis of K- and Ba-exchange reactions with synthetic Na-birnessite using synchrotron X-ray diffraction journal February 2007
Thermodynamics of manganese oxides: Effects of particle size and hydration on oxidation-reduction equilibria among hausmannite, bixbyite, and pyrolusite journal August 2012