Low temperature synthesis and characterization of nesquehonite

@article{Kloprogge2003LowTS,
  title={Low temperature synthesis and characterization of nesquehonite},
  author={J. Theo Kloprogge and Wn N. Martens and Luke Nothdurft and Lv V. Duong and Ge E. Webb},
  journal={Journal of Materials Science Letters},
  year={2003},
  volume={22},
  pages={825-829}
}
Nesquehonite, Mg(HCO3)(OH).2H2O or MgCO3.3H2O, was named after its type locality in Nesquehoning, Pennsylvania, USA. The structure of nesquehonite can be envisaged as infinite chains of corner sharing MgO6 octahedra along the b-axis. Within these chains CO32- groups link 3 MgO6 octahedra by two common corners and one edge. This structural arrangement causes strong distortion of the octahedra. Chains are interconnected by hydrogen bonds only, whereby each Mg atom is coordinated to two water… Expand
On the thermal decomposition of nesquehonite
Among the phases in the MgO–CO2–H2O system, nesquehonite, MgCO3·3H2O, attracts particular attention because of its potential application to carbon capture. However, its stability and the reportedExpand
Dolomitic lime: thermal decomposition of nesquehonite
Abstract Nesquehonite (MgCO3·3H2O) (N) can be obtained from a dolomitic quicklime paste in a CO2-rich atmosphere. Thermal decomposition of this synthetic nesquehonite has been studied by TG-DTAExpand
Synthesis and characterization of nesquehonite (MgCO3·3H2O) powders from natural talc
Abstract The feasibility of synthesis of nesquehonite powders from natural talc was evaluated both through theoretical and experimental approaches. The change of the Gibbs free energy was − 318Expand
Controlled precipitation of nesquehonite (MgCO3·3H2O) by the reaction of MgCl2 with (NH4)2CO3
Abstract In this study, homogeneous (unseeded) precipitation of nesquehonite (MgCO 3 ·3H 2 O) by the reaction of MgCl 2 with (NH 4 ) 2 CO 3 in supersaturated solutions was investigated. Factors thatExpand
The thermal behaviour and structural stability of nesquehonite, MgCO3.3H2O, evaluated by in situ laboratory parallel-beam X-ray powder diffraction: New constraints on CO2 sequestration within minerals.
TLDR
The results suggest that the structural stability of nesquehonite at high temperatures suggests that it will remain stable under the temperature conditions that prevail at the Earth's surface. Expand
Effects of sodium dodecyl sulfate on the oriented growth of nesquehonite whiskers
Abstract In this study, nesquehonite MgCO 3 ·3H 2 O whiskers with long length and high aspect ratio were synthesized through reactive crystallization, in which MgCl 2 and Na 2 CO 3 precipitated inExpand
Phase transitions in the MgCO2H2O system and the thermal decomposition of dypingite, Mg5(CO3)4(OH)2 · 5H2O: Implications for geosequestration of carbon dioxide
Abstract The application of hydrated Mg-carbonates as CO2 sequestering media is a pressing environmental challenge, which requires a deep knowledge of the phase transitions occurring in the Mg CO2Expand
Precipitation of nesquehonite from homogeneous supersaturated solutions
The homogeneous (unseeded) precipitation of nesquehonite (MgCO(3)center dot 3H(2)O) was studied over the temperature range of 10-40 degrees C. Precipitation was triggered by the supersaturationExpand
Synthesis of nesquehonite by reaction of gaseous CO2 with Mg chloride solution: its potential role in the sequestration of carbon dioxide.
TLDR
A novel method to synthesize nesquehonite, MgCO(3) x 3H(2)O, via reaction of a flux of CO(2), with Mg chloride solution at 20+/-2 degrees C, which is a promising complementary solution to other methods of CO (2) sequestration. Expand
Study on Synthesis of Nesquehonite Whiskers
Thermal composition of low temperature water is taken as way in the text, with the MgSO4•7H2O and NH4HCO3 being raw materials to make nesquehonite whiskers, further talking about the concentration ofExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 24 REFERENCES
The crystal structure of nesquehonite, MgCO3 · 3H2O, from Lavrion, Greece
SummaryNesquehonite, MgCO3 · 3H2O, has been observed from Sounion, Lavrion mining district, Greece as a late alteration product in crystals up to 4 mm in size. The structure was refined in P21/n, Z =Expand
The crystal structure of nesquehonite, MgCO3.3H2O
Fig. 1. The crystal structure of K H C O 3 . M g C O 3 . 4 H 2 0 projected along the c axis; z coordinates are given in fractions multiplied by 1000. Probable hydrogen bonds are marked with dottedExpand
Infrared characterization of water and hydroxyl ion in the basic magnesium carbonate minerals
Infrared spectra in the 0.5-50 m range have been measured on nesquehonite (MgCO 3 .3H 2 O, artinite (MgCO 3 .Mg(OH) 2 .3H 2 O) and hydromagnesite (4MgCO 3 .Mg(OH) 2 .4H 2 O). The CO 3 2- internalExpand
Structured water in hydrotalcites of formula MgxZn6-xAl2(OH)16(CO3).4H2O: A Raman microscopic study
Raman microscopy was used to characterize synthesized hydrotalcites of formula MgxZn6-xAl2(OH)16 (CO3)·4H2O. The Raman spectra are conveniently subdivided into spectral features based on (a) theExpand
The effects of various hydrothermal treatments on magnesium-aluminium hydrotalcites
Mg/Al hydrotalcites were synthesised by coprecipitation followed by hydrothermal treatment. The materials were characterised by XRD, infrared and Raman spectroscopy, electron microscopy and thermalExpand
Thermal stability of azurite and malachite in relation to the formation of mediaeval glass and glazes
Abstract Azurite and malachite have been extensively used as pigments in ancient and medieval manuscripts, glasses and glazes. The thermal stability of naturally occurring azurite and malachite wasExpand
Heating stage Raman and infrared emission spectroscopic study of the dehydroxylation of synthetic Mg-hydrotalcite
The thermal behaviour of synthetic hydrotalcite, Mg5.6Al2.4(OH)16(CO3,NO3)·nH2O, has been studied by Infrared Emission Spectroscopy (IES) and heating stage Raman microscopy. Heating stage RamanExpand
Monohydrocalcite, hydromagnesite, nesquehonite, dolomite, aragonite, and calcite in speleothems of the Fränkische Schweiz, Western Germany
The formation of calcite, aragonite, dolomite, hydromagnesite, and nesquehonite in speleothems of a small cave within dolostone may be compared with the formation of these carbonate minerals in muchExpand
Fourier Transform Infrared and Raman Spectroscopic Study of the Local Structure of Mg-, Ni-, and Co-Hydrotalcites
Synthetic Mg-, Ni- (takovite), and Co-hydrotalcite are characterized by FT-IR and FT-Raman spectroscopy. Changes in the composition brought about by changing the divalent metal result in small butExpand
Thermal decomposition of bauxite minerals: infrared emission spectroscopy of gibbsite, boehmite and diaspore
Infrared emission spectroscopy has been used to study the dehydroxylation behavior over the temperature range from 200 to 750°C of three major Al-minerals in bauxite: gibbsite (synthetic andExpand
...
1
2
3
...