Study of kinetics and thermodynamics of the dehydration reaction of AlPO4 · H2O

Boonchom, Banjong; Kongtaweelert, Samart

doi:10.1007/s10973-009-0113-5

Cited by 24 publications

(21 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All of the XRD, TEM (HRTEM), and SAED findings establish that the as-prepared AlPO 4 via heating treatment at 500 C has amorphous structure. This result is in good agreement with the results reported by Youssif et al [37] and Boonchom et al [38] where the AlPO 4 transforms from amorphous to crystalline phase at >500 C.…”

Section: Physical Characterizationsupporting

confidence: 93%

“…Al(NO 3 ) 3 solution was added dropwise to (NH 4 ) 2 HPO 4 solution under vigorous stirring, and then the pH of the mixed solution was adjusted to 4 by adding ammonia water, and a light white suspension solution (with AlPO 4 nanoparticles) was observed. Then the suspension solution was kept on stirring for 2 h. Subsequently, it was dried in an oven for several days at 100 C, and annealed at 500 C for 6 h in a furnace to obtain amorphous AlPO 4 [28e30, 37,38].…”

Section: Materials Fabricationmentioning

confidence: 99%

See 1 more Smart Citation

Effects of amorphous AlPO4 coating on the electrochemical performance of BiF3 cathode materials for lithium-ion batteries

Wang

et al. 2012

Journal of Power Sources

View full text Add to dashboard Cite

Section: Physical Characterizationsupporting

confidence: 93%

Section: Materials Fabricationmentioning

confidence: 99%

Effects of amorphous AlPO4 coating on the electrochemical performance of BiF3 cathode materials for lithium-ion batteries

Wang

et al. 2012

Journal of Power Sources

View full text Add to dashboard Cite

“…Those main polymorphs can be differentiated by X-Ray Diffraction (XRD) [17,18,19], Fourier-Transform Infrared (FTIR) [20,21,22] and Nuclear Magnetic Resonance (NMR) [23,24,25] spectroscopies. Finally, AlPO 4 also exists in various hydrated AlPO 4 .xH 2 O phases which can be characterized by XRD [26,27] and FTIR spectroscopy [22,27] as well.…”

Section: Introductionmentioning

confidence: 99%

Acid-based geopolymers: Understanding of the structural evolutions during consolidation and after thermal treatments

Mathivet

Jouin

Gharzouni

et al. 2019

Journal of Non-Crystalline Solids

View full text Add to dashboard Cite

Materials such as ceramic matrix composites are developed for mechanical applications at high temperature, but their cost remains a limitation. Consequently, the use of acid-based geopolymer matrices may be an alternative to reduce costs. In this study, the sample was prepared from metakaolin and phosphoric acid. FTIR and NMR spectroscopies, XRD and thermal measurements were used to understand the structural evolution of acid-based geopolymers (binders) during consolidation and after thermal treatments. According to the results, the consolidation of the binder has been divided into four steps: the dissolution of the metakaolin, the polycondensation reactions forming AlPO 4 entities and hydrated phases, the breakdown of Si-O-Al bonds with formation of various hydrated silica *Manuscript Click here to download Manuscript: manuscript.docx Click here to view linked References

show abstract

“…Fig 7 displays the full 2θ range measured and specifically shows two relatively weak peaks at 26.4 ○ and 19.80 ○ confirming the transformation of α-Al 2 O 3 into an aluminium phosphate phase. Another notable feature is the broad peak that spans between [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] ○ (magnified in the inset) which seems to indicate the presence of a poor crystallization or amorphous phase 34 , possibly AlPO 4 ·H 2 O. Although well-bonded, the compaction of the Al 2 O 3 particles is relatively poor.…”

Section: Resultsmentioning

confidence: 99%

Chemically Bonded Phosphate Ceramics Reinforced with Carbon Nanotubes

Wade¹,

Liu²,

Wu³

2013

Ceramic Engineering and Science Proceedings

View full text Add to dashboard Cite

We report herein, a scalable method for the preparation of alumina (Al 2 O 3 )-phosphate ceramics reinforced with carbon nanotubes (CNTs). All composites were manufactured by direct on-site growth of CNTs on ceramic particles via catalytic chemical vapour deposition. Introduction of catalyst metals to the substrate was achieved through two simple approaches, drip-coating and vacuum filtration, both of which have been reviewed. Transmission electron microscopy was utilised to investigate the interface between the Al 2 O 3 surface and the in-situ CNTs. Resultant ceramics were produced by impregnating phosphoric acid into the Al 2 O 3 +CNT nanocomposite powder followed by die-pressing. In order to maintain the integrity of the CNTs, dehydration/curing was performed at 130-150 ○ C. Scanning electron microscopy was elected to comparatively characterise the microstructure of this type of ceramic nanocomposite against its monolithic equivalent. Possible mechanisms by which specific features have formed are discussed.

show abstract

Study of kinetics and thermodynamics of the dehydration reaction of AlPO4 · H2O

Cited by 24 publications

References 29 publications

Effects of amorphous AlPO4 coating on the electrochemical performance of BiF3 cathode materials for lithium-ion batteries

Effects of amorphous AlPO4 coating on the electrochemical performance of BiF3 cathode materials for lithium-ion batteries

Acid-based geopolymers: Understanding of the structural evolutions during consolidation and after thermal treatments

Chemically Bonded Phosphate Ceramics Reinforced with Carbon Nanotubes

Contact Info

Product

Resources

About