Structure of a second polymorph of calcium acetate monohydrate

Sluis, P. van der; Schouten, A.; Spek, A. L.

doi:10.1107/s0108270187089601

Cited by 25 publications

(21 citation statements)

References 1 publication

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“…Figure shows clearly that the type of alcohol used, possibly through differences in their boiling point and polar properties (methanol has the highest polarity among the alcohols tested here), influences the morphology of the re‐crystallized calcium acetate. This hypothesis is supported by the work of van der Sluis et al who investigated the crystallization of calcium acetate from pure water or ethanol‐water solutions. The authors reported that crystallization from pure water yielded needle‐shaped crystals of calcium acetate monohydrate .…”

Section: Resultsmentioning

confidence: 65%

“…This hypothesis is supported by the work of van der Sluis et al who investigated the crystallization of calcium acetate from pure water or ethanol‐water solutions. The authors reported that crystallization from pure water yielded needle‐shaped crystals of calcium acetate monohydrate . The addition of 10% ethanol to water decreased the solubility of calcium acetate and resulted in the crystallization of large flat needles .…”

Section: Resultsmentioning

confidence: 72%

“…The authors reported that crystallization from pure water yielded needle‐shaped crystals of calcium acetate monohydrate . The addition of 10% ethanol to water decreased the solubility of calcium acetate and resulted in the crystallization of large flat needles . Methanol has also the lowest boiling point (65 °C) among all the alcohols studied here.…”

Section: Resultsmentioning

confidence: 99%

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Development of Highly Effective CaO‐based, MgO‐stabilized CO₂ Sorbents via a Scalable “One‐Pot” Recrystallization Technique

Broda

Kierzkowska

Müller

2014

Adv Funct Materials

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Here, we report the development of novel, highly effective CaO‐based CO2 sorbents via a well‐scalable and economic synthesis technique, viz. the re‐crystallization of calcium and magnesium acetates in organic solvents. We successfully synthesized a material that possessed an excellent cyclic CO2 uptake (10.71 mmol(CO2) g(sorbent)−1 after 10 cycles), even under harsh, but practically relevant, regeneration conditions. To obtain such a high cyclic CO2 uptake, it was found to be crucial to mix the active component, CaO, and the high Tammann temperature support, MgO, on the nanometer scale. The synthesis technique developed only requires 8 wt% of MgO to effectively stabilize the cyclic CO2 uptake of the material. Furthermore, we established the influence of various synthesis parameters such as the molar ratio of Ca2+ to Mg2+ and the re‐crystallization media on the sorbent's morphology and, in turn, cyclic CO2 uptake. Our best material exceeded the CO2 uptake (10th cycle) of limestone by 200%.

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Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Development of Highly Effective CaO‐based, MgO‐stabilized CO₂ Sorbents via a Scalable “One‐Pot” Recrystallization Technique

Broda

Kierzkowska

Müller

2014

Adv Funct Materials

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“…Even the simple calcium acetates and formates exhibit a pronounced polymorphism, as for anhydrous calcium formate four distinct polymorphs [19][20][21] and as both for anhydrous calcium acetate 22 and calcium acetate monohydrate [23][24][25] 28 and Ca 2 (CH 3 COO) (HCOO)(NO 3 ) 2 ·4H 2 O 17 were determined from XRPD-data, whereas the crystal structures of Ca 7 (CH 3 COO) 6 (HCOO) 8 ·5H 2 O and Ca(CH 3 COO)(HCOO)·H 2 O are still unknown. The latter phase is of special importance as Tennent and Baird 11 identified it on more than 20 different objects and also in the British Museum, this compound has been detected on a marble relief and classical ceramics.…”

Section: Introductionmentioning

confidence: 99%

Efflorescence on calcareous objects in museums: crystallisation, phase characterisation and crystal structures of calcium acetate formate phases

et al. 2019

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“…Presently, two polymorphs of calcium acetate are known and each has the composition Ca(OAc) 2 AEH 2 O [36,37]. A comparison of the NMR samples examined here to these forms was made by growing crystals by slow evaporation from water.…”

Section: Assigning Shifts To the Asymmetric Unit With 1 H-13 C Correlmentioning

confidence: 99%

Pursuing structure in microcrystalline solids with independent molecules in the unit cell using 1H–13C correlation data

Harper

Strohmeier

Grant

2007

Journal of Magnetic Resonance

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The (1)H-(13)C solid-state NMR heteronuclear correlation (HETCOR) experiment is demonstrated to provide shift assignments in certain powders that have two or more structurally independent molecules in the unit cell (i.e. multiple molecules per asymmetric unit). Although this class of solids is often difficult to characterize using other methods, HETCOR provides both the conventional assignment of shifts to molecular positions and associates many resonances with specific molecules in the asymmetric unit. Such assignments facilitate conformational characterization of the individual molecules of the asymmetric unit and the first such characterization solely from solid-state NMR data is described. HETCOR offers advantages in sensitivity over prior methods that assign resonances in the asymmetric unit by (13)C-(13)C correlations and therefore allows shorter average analysis times in natural abundance materials. The (1)H-(13)C analysis is demonstrated first on materials with known shift assignments from INADEQUATE data (santonin and Ca(OAc)(2) phase I) to verify the technique and subsequently is extended to a pair of unknown solids: (+)-catechin and Ca(OAc)(2) phase II. Sufficient sensitivity and resolution is achieved in the spectra to provide assignments to one of the specific molecules of the asymmetric unit at over 54% of the sites.

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Structure of a second polymorph of calcium acetate monohydrate

Cited by 25 publications

References 1 publication

Development of Highly Effective CaO‐based, MgO‐stabilized CO₂ Sorbents via a Scalable “One‐Pot” Recrystallization Technique

Development of Highly Effective CaO‐based, MgO‐stabilized CO₂ Sorbents via a Scalable “One‐Pot” Recrystallization Technique

Efflorescence on calcareous objects in museums: crystallisation, phase characterisation and crystal structures of calcium acetate formate phases

Pursuing structure in microcrystalline solids with independent molecules in the unit cell using 1H–13C correlation data

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Structure of a second polymorph of calcium acetate monohydrate

Cited by 25 publications

References 1 publication

Development of Highly Effective CaO‐based, MgO‐stabilized CO2 Sorbents via a Scalable “One‐Pot” Recrystallization Technique

Development of Highly Effective CaO‐based, MgO‐stabilized CO2 Sorbents via a Scalable “One‐Pot” Recrystallization Technique

Efflorescence on calcareous objects in museums: crystallisation, phase characterisation and crystal structures of calcium acetate formate phases

Pursuing structure in microcrystalline solids with independent molecules in the unit cell using 1H–13C correlation data

Contact Info

Product

Resources

About

Development of Highly Effective CaO‐based, MgO‐stabilized CO₂ Sorbents via a Scalable “One‐Pot” Recrystallization Technique

Development of Highly Effective CaO‐based, MgO‐stabilized CO₂ Sorbents via a Scalable “One‐Pot” Recrystallization Technique