Synthesis and Characterization of Expanded Layer-Spacing Zirconium Phosphate by Ion-Exchange and Intercalation Processes

Hanna, A. A.; Ali, Ashraf F.; Gad, Alaa E.

doi:10.3363/prb.23.83

Cited by 4 publications

(4 citation statements)

References 18 publications

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“…In previous works, the authors studied the preparation, characterization and applications of some simple and condensed phosphates including Na, Al, Fe, Ti and Zr and some rare earth phosphates [3,4]. Both the classical and the advanced methods were used in the preparation and the produced phosphates were evaluated as ion exchangers for removing the small and the large cations from their aqueous medium.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and microstructure studies of nano-sized cerium phosphates

et al. 2010

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KEYWORDSCerium phosphate, CePO4, nanoparticles with hexagonal or monoclinic phase was synthesized by the reaction between Ce(SO4)2.4H2O and two different phosphate sources, H3PO4 and Na2HPO4. The obtained gel was dried and calcined at different temperatures (200, 400, and 800 о C). The effects of the precursor materials and the calcination temperatures on the produced phases were studied. Both X-ray diffraction (XRD) and infrared spectroscopy (IR) were used to follow the changes in the phase structure for the produced samples. The thermal behaviour of the as prepared samples was studied by using differential scanning calorimetric (DSC) and thermogravimetric analysis (TGA). The morphology, crystallinity and particle size of the produced samples as prepared and calcinated were characterized by transmission electron microscope (TEM). The analysis of TEM results indicated that CePO4 was prepared in nano-sized particles.Cerium phosphate Synthesis X-ray diffraction IR DSC/TGA TEM

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Section: Introductionmentioning

confidence: 99%

Synthesis and microstructure studies of nano-sized cerium phosphates

et al. 2010

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“…The main single peak of α‐ZrP is observed at δ value of −20.1. As shown in Figure (b), the intercalation of α‐ZrP with 1‐aminobutane is observed at δ = −16.2 for the bilayer phosphate structure and at δ = −20.5 for the monolayer structure . In Figure (c), a signal at δ = −22.6 is observed for the α‐ZrP·Bu‐RXN.…”

Section: Resultsmentioning

confidence: 73%

“…As shown in Figure 9(b), the intercalation of a-ZrP with 1-aminobutane is observed at d 5 216.2 for the bilayer phosphate structure and at d 5 220.5 for the mono-layer structure. 35,54 In Figure 9(c), a signal at d 5 222.6 is observed for the a-ZrPÁBu-RXN. The signal might be due to the separation of amines from the phosphate groups.…”

Section: Articlementioning

confidence: 91%

Alkylamines-intercalated α-zirconium phosphate as latent thermal anionic initiators

Shimomura

Maeno

Ohtaka

et al. 2014

J. Polym. Sci. Part A: Polym. Chem.

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The reaction of glycidyl phenyl ether (GPE) with 1‐aminoalkanes‐intercalated α‐zirconium phosphate (α‐ZrP·1‐aminoalkane): 1‐aminoalkanes 1‐aminopropane (α‐ZrP·Pr), 1‐aminobutane (α‐ZrP·Bu), 1‐aminooctane (α‐ZrP·Oct), and 1‐aminohexadecane (α‐ZrP·Hed) was carried out at varying temperatures for 1 h periods. Reaction progress was not observed until the reactants were heated to 80 °C or above. On increasing the temperature, the conversion factors increased such that, at 140 °C, conversions of 62% (α‐ZrP·Pr), 60% (α‐ZrP·Bu), 67% (α‐ZrP·Oct), and 64% (α‐ZrP·Hed) were obtained. The thermal stabilities as latent initiators were tested: GPEs reacted with α‐ZrP·Pr, α‐ZrP·Bu, and α‐ZrP·Oct at 40 °C for 360 h achieved conversions of 83, 55, and 59%, respectively. In contrast, the reaction in the presence of α‐ZrP·Hed did not proceed at 40 °C. The order of the thermal stability of GPE in the presence of α‐ZrP·1‐aminoalkane intercalation compounds was: α‐ZrP·Hed > α‐ZrP·Bu ≈ α‐ZrP·Oct > α‐ZrP·Pr. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 1854–1861

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“…As shown in Figure 2a, the peak of α-ZrP•Bim is observed at δ-20.6. This chemical shift suggests that interactions between Bim and the HPO 4 group were not strong compared with that between alkylamines and the HPO 4 group [18,19]. In Figure 2b for α-ZrP•Bim-RXN, the signal at δ-21.2 and -23.6 were observed.…”

Section: Resultsmentioning

confidence: 94%

Release Behavior of Benzimidazole-Intercalated α-Zirconium Phosphate as a Latent Thermal Initiator in the Reaction of Epoxy Resin

et al. 2019

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The intercalation compound of benzimidazole with α-zirconium phosphate (α-ZrP) was evaluated as a latent thermal initiator in the reaction of glycidyl phenyl ether (GPE) and hexahydro-4-methylphthalic anhydride (MHHPA). No reaction occurred at 60 °C after 1 h. Upon increasing the temperature to 140 °C, the conversion reached 97% after 1 h. The deintercalation ratio of Bim from the intercalation compound of benzimidazole with α-zirconium phosphate (α-ZrP·Bim) was measured in the reaction of the GPE-MHHPA system. The deintercalation ratio increased upon increasing the temperature, reaching 97% at 120 °C after 1 h. The storage stability at 25 °C and 40 °C in the reaction of GPE-MHHPA was tested and was found to be maintained for 14 days at 25 °C. The intercalation compound of α-ZrP·Bim can effectively serve as a latent thermal initiator in the reaction of GPE-MHHPA.

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Synthesis and Characterization of Expanded Layer-Spacing Zirconium Phosphate by Ion-Exchange and Intercalation Processes

Cited by 4 publications

References 18 publications

Synthesis and microstructure studies of nano-sized cerium phosphates

Synthesis and microstructure studies of nano-sized cerium phosphates

Alkylamines-intercalated α-zirconium phosphate as latent thermal anionic initiators

Release Behavior of Benzimidazole-Intercalated α-Zirconium Phosphate as a Latent Thermal Initiator in the Reaction of Epoxy Resin

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