Hydrogen storage in highly microporous solids derived from aluminium biphenyldiphosphonate

Brunet, Ernesto; Cerro, Carlos; Juanes, Olga; Rodríguez‐Ubis, Juan Carlos; Clearfield, Abraham

doi:10.1007/s10853-007-2377-0

Cited by 17 publications

(9 citation statements)

References 13 publications

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“…The incorporation of rigid 4,4 0 -biphenyldiphosphonic (BPDP) and phosphorous acids (in different ratios) into aluminum salts results in amorphous microporous materials designated as UAM-150, UAM-151, and UAM-152. 206 H 2 adsorption data reveal its augmentation as the amount of phosphorous acid increases whereas the H 2 intake displayed by material UAM-152 is close to the highest reported for organic-inorganic materials at 77 K and atmospheric pressure. Moreover, the last two materials show lower C % contents and inferior TGA losses at high temperature, which strongly support that phosphorous acid incorporates into the matrix.…”

Section: Gas Storagesupporting

confidence: 67%

Chapter 14. Structural Diversity in Metal Phosphonate Frameworks: Impact on Applications

Demadis¹,

Stavgianoudaki²

2011

Metal Phosphonate Chemistry

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Section: Gas Storagesupporting

confidence: 67%

Chapter 14. Structural Diversity in Metal Phosphonate Frameworks: Impact on Applications

Demadis¹,

Stavgianoudaki²

2011

Metal Phosphonate Chemistry

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“…Single-pulse solid-state 31 P MAS NMR spectra were recorded of the different ZrBTP-x and ZrBDP-x samples along with the free acids (Figure ). These spectra are superficially similar to those published by Brunet et al for microporous materials formed from aluminum and 4,4-biphenyldiphosphonic (BPDP). These aromatic polyphosphonates bear some similarities to the BTP except that the phosphonate groups are on adjacent carbons rather than alternate carbons as in BTP.…”

Section: Resultssupporting

confidence: 91%

Zirconium(IV)–Benzene Phosphonate Coordination Polymers: Lanthanide and Actinide Extraction and Thermal Properties

et al. 2016

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Coordination polymers with different P/(Zr + P) molar ratios were prepared by combining aqueous solutions of Zr(IV) and benzenephosphonate derivatives. 1,3,5-Benzenetrisphosphonic acid (BTP) as well as phosphonocarboxylate derivatives in which carboxylate substitutes one or two of the phosphonate groups were chosen as the building blocks. The precipitates obtained on combining the two solutions were not X-ray amorphous but rather were indicative of poorly ordered materials. Hydrothermal treatment did not alter the structure of the materials produced but did result in improved crystalline order. The use of HF as a mineralizing agent during hydrothermal synthesis resulted in the crystallization of at least three relatively crystalline phases whose structure could not be determined owing to the complexity of the diffraction patterns. Gauging from the similarity of the diffraction patterns of all the phases, the poorly ordered precipitates and crystalline materials appeared to have similar underlying structures. The BTP-based zirconium phosphonates all showed a higher selectivity for lanthanides and thorium compared with cations such as Cs(+), Sr(2+), and Co(2+). Substitution of phosphonate groups by carboxylate groups did little to alter the pattern of selectivity implying that selectivity in the system was entirely determined by the -POH group with little influence from the -COOH groups. Samples with the highest phosphorus content showed the highest extraction efficiencies for lanthanide elements, especially the heavy lanthanides such as Dy(3+) and Ho(3+) with separation factors of around four with respect to La(3+). In highly acid solutions (4 M HNO3) there was a pronounced variation in extraction efficiency across the lanthanide series. In situ, nonambient diffraction was performed on ZrBTP-0.8 loaded with Th, Ce, and a complex mixture of lanthanides. In all cases the crystalline Zr2P2O7 pyrophosphate phase was formed at ∼800 °C demonstrating the versatility of this structure.

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“…In the next set of trials, carried out collaboratively in Spain, the temperature was increased to 185 °C for 7 days using a 1:1 mixture of acetone and water . The results collected in Table show a systematic increase in the amount of phosphite incorporated and a corresponding increase in surface area; however, the amount of phosphite incorporated is much less than is present in the initial mixture. The X-ray pattern for sample UAM-150 is shown in Figure .…”

Section: Unconventional Phosphonate Mofsmentioning

confidence: 99%

Conventional and Unconventional Metal–Organic Frameworks Based on Phosphonate Ligands: MOFs and UMOFs

2011

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Hydrogen storage in highly microporous solids derived from aluminium biphenyldiphosphonate

Cited by 17 publications

References 13 publications

Chapter 14. Structural Diversity in Metal Phosphonate Frameworks: Impact on Applications

Chapter 14. Structural Diversity in Metal Phosphonate Frameworks: Impact on Applications

Zirconium(IV)–Benzene Phosphonate Coordination Polymers: Lanthanide and Actinide Extraction and Thermal Properties

Conventional and Unconventional Metal–Organic Frameworks Based on Phosphonate Ligands: MOFs and UMOFs

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