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- Baykal, A, et al.
(författare)
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Hydrothermal and microwave synthesis of boron phosphate, BPO4
- 2001
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Ingår i: Turkish Journal of Chemistry. - 1010-7614. ; 25:4, s. 425-432
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Tidskriftsartikel (refereegranskat)abstract
- BPO4 was previously synthesized by the solid state reactions of (NH4)(2)HPO4 and B2O3 at 1000 degreesC and was characterized by X-ray powder diffraction and IR methods. We have now succeeded in preparing BPO4 from H3BO3 and P2O5 using hydrothermal synthesis by heating at 160 degreesC for 2 days and obtained a single phase product. We observed that a microwave-assisted synthesis takes only 3 to 5 minutes to transform a solid mixture of (NH4)(2)B4O7. 4H(2)O, and solid H3PO4 Or B2O3 + P2O5 into the crystalline title compound. Its X-ray powder diffraction data and IR spectra were in good agreement with the literature values.
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- Baykal, A, et al.
(författare)
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X-RAY powder diffraction and IR study of calcium borophosphate, CaBPO5
- 2000
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Ingår i: Turkish Journal of Chemistry. - 1010-7614. ; 24:4, s. 381-388
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Tidskriftsartikel (refereegranskat)abstract
- In this study, CaBPO5 was synthesized by different solid state reactions than reported before and its X-ray powder diffraction and IR data were reported. In one of these solid state reactions BPO4 was used as a phosphating agent. The examination of the X-ray powder diffraction data showed that this compound crystallized in a hexagonal system and the refilled unit cell parameters were a = 6.684, c = 6.616(2) Angstrom, with Z=3 as reported before. From the observed reflections, the space group was determined as P3(1)21, and its density was found to be 3.15 g/cc. The X-ray powder diffraction and IR data, which were in agreement with the reported crystal structure, are given tho first time in this work.
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