Porous hexacyanocobaltates(III): Role of the metal on the framework properties

Roque, J.; Reguera, E.; Balmaseda, J.; Rodríguez‐Hernández, Juan; Reguera, L.; Castillo, L. F. del

doi:10.1016/j.micromeso.2007.01.030

Cited by 70 publications

(77 citation statements)

References 37 publications

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“…The samples' hydration degrees were estimated from weight losses. According to the crystal structure, both as-synthesized samples have six coordinated water molecules per formula unit [11]. The estimated numbers of uncoordinated water molecules per formula units, after fixing six coordinates, for MnHCC and CoHCC were 6.51 and 8.08, respectively, in agreement with previous reported values [11].…”

Section: Thermogravimetric Analysissupporting

confidence: 89%

“…The contraction in the CoHCC cell volume was 3% relative to the as-synthesized phase. The MnHCC differential correlation function has two maxima at around 1.9 Å and 2.4 Å (Figure 2) in agreement with reported distances for Co−C and Mn−N bonds [11]. A similar behavior is observed for CoHCC.…”

Section: X-ray Diffractionsupporting

confidence: 88%

“…According to the crystal structure, both as-synthesized samples have six coordinated water molecules per formula unit [11]. The estimated numbers of uncoordinated water molecules per formula units, after fixing six coordinates, for MnHCC and CoHCC were 6.51 and 8.08, respectively, in agreement with previous reported values [11]. The decomposition event occurs from 346.26 • C to 362.33 • C in MnHCC (23.53% weight loss) and from 313.10 • C to 326.61 • C in CoHCC (23.89% weight loss).…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

“…Transitions metal hexacyanometallates represent an attractive family of porous materials with a great diversity of topologies and pore sizes [10][11][12][13][14][15][16][17][18][19]. Some members of this family also have a high density of open metal sites on their pores walls [11], and others have exchangeable metal cations [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…Some members of this family also have a high density of open metal sites on their pores walls [11], and others have exchangeable metal cations [20][21][22]. Open metal sites and exchangeable metal cations are specific adsorption centers with intense field gradients to interact with quadrupole molecules of great technological interest, such as: H 2 [23,24], CO 2 [25], O 2 [21] and N 2 [21].…”

Section: Introductionmentioning

confidence: 99%

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Structural and Gas Retention Changes Induced by Ozonization of Cobalt(II) and Manganese(II) Hexacyanocobaltates(III)

et al. 2017

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Transition metal hexacyanocobaltates are porous materials with open metal sites and a wide variety of pores. In this work, manganese(II) and cobalt(II) hexacyanocobaltates(III) have been selected to explore the interactions between the open metal sites located in their pores and the guest molecules: hydrogen, carbon dioxide, water and methanol. An experimental setup was designed and implemented to conduct post-synthesis modification of the solids with ozone. Samples were dehydrated, ozonized and saturated with methanol in situ. Ozone molecules acted on the open metal sites changing their oxidation state, causing a contraction of the unit cell and inducing a stronger interaction of the molecules of water and methanol with the lattice. This strengthening prevented the lattice from being evacuated without compromising its framework stability. The decomposition temperature decreased in all ozonized samples as a consequence of the elongation and weakening of the cobalt-carbon bond. Active infrared and Raman bands were used to monitor the interaction between the open metal sites at the framework surface and the guest molecules. The cell contraction and the presence of residual methanol molecules in the porosity reduced the hydrogen and carbon dioxide retention capacity of the samples.

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Section: Thermogravimetric Analysissupporting

confidence: 89%

Section: X-ray Diffractionsupporting

confidence: 88%

Section: Thermogravimetric Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural and Gas Retention Changes Induced by Ozonization of Cobalt(II) and Manganese(II) Hexacyanocobaltates(III)

et al. 2017

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Surface Area and Porosity Characterization of Porous Polymers

Roque‐Malherbe

2011

Porous Polymers

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Functional Materials for Gas Storage. PartI: Carbon Dioxide and Toxic Compounds

Reguera

2017

Handbook of Solid State Chemistry

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SummaryThe first part of this overview on functional materials for gas storage is mainly focused on environmental applications, which include the separation and capture of carbon dioxide and air purification where adsorbent materials play a decisive role to remove a large diversity of toxic compounds. The exploitation of fossil fuels has generated huge amounts of gaseous pollutants, namely,CO2,NOx, and countless volatile organic compounds (VOCs), among others, which urge capture and reuse whenever possible. In many industrial processes, emission of harmful gases and vapors are common, which require their removal for personnel protection and odor control. This part of overview includes a brief discussion on the fundamentals of gases and vapors' adsorption. During the past decades, tens of thousands of porous solids have been prepared and evaluated as absorbents. To rationalize that huge volume of information, the available data are critically reviewed according to the nature of the guest–host interactions that determine the adsorption forces and the related adsorption heats. Carbon dioxide can be captured and stored by clathrate formation, which is also briefly discussed.

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Porous hexacyanocobaltates(III): Role of the metal on the framework properties

Cited by 70 publications

References 37 publications

Structural and Gas Retention Changes Induced by Ozonization of Cobalt(II) and Manganese(II) Hexacyanocobaltates(III)

Structural and Gas Retention Changes Induced by Ozonization of Cobalt(II) and Manganese(II) Hexacyanocobaltates(III)

Surface Area and Porosity Characterization of Porous Polymers

Functional Materials for Gas Storage. PartI: Carbon Dioxide and Toxic Compounds

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