Details
| Original language | English |
|---|---|
| Pages (from-to) | 1647-1654 |
| Number of pages | 8 |
| Journal | Zeitschrift fur Anorganische und Allgemeine Chemie |
| Volume | 647 |
| Issue number | 16-17 |
| Early online date | 13 Jul 2021 |
| Publication status | Published - 2 Sept 2021 |
Abstract
Phosphate cancrinite (PO4-CAN) has been synthesized under mild hydrothermal conditions at 473 K using kaolin, sodium orthophosphate-dodecahydrate and strong alkaline conditions (8 M NaOH solution). Cancrinite crystals of rod-like habit and maximum lengths up to 2 μm were observed and characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDXS) and Fourier transform infrared spectroscopy (FTIR). Magic angle spinning nuclear magnetic resonance spectroscopy (MAS NMR) of the nucleus 31P, thermogravimetry (TG/DTG) and heating experiments under open conditions in a furnace were additionally performed. The empirical formula Na8[SiAlO4]6(PO4)0.58(CO3)0.13(H2O)4.6 was calculated from EDXS analyses and TG data under consideration of a minor carbonate content, detected by FTIR spectroscopy. PO4-CAN is stable up to 800 °C before thermal destruction rapidly occurs at 825 °C. The final product of TG analyses at 1000 °C is a mixture of a nepheline-like phase and the phosphate content of the initial cancrinite sample. XRD and FTIR results of the synthesis product are in good agreement with literature data of the rare mineral depmeierite.
Keywords
- P MAS NMR, framework type CAN, hydrothermal synthesis, microporous solids, phosphate enclathrated zeolites
ASJC Scopus subject areas
- Chemistry(all)
- Inorganic Chemistry
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In: Zeitschrift fur Anorganische und Allgemeine Chemie, Vol. 647, No. 16-17, 02.09.2021, p. 1647-1654.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Synthesis and properties of phosphate cancrinite (PO4-CAN) a synthetic counterpart of depmeierite
AU - Buhl, J. Ch
AU - Petrov, V.
N1 - Funding Information: The authors gratefully acknowledge Dr. M. Fechtelkord from Ruhr-Universität Bochum for performing the 31P MAS NMR measurement. Open access funding enabled and organized by Projekt DEAL.
PY - 2021/9/2
Y1 - 2021/9/2
N2 - Phosphate cancrinite (PO4-CAN) has been synthesized under mild hydrothermal conditions at 473 K using kaolin, sodium orthophosphate-dodecahydrate and strong alkaline conditions (8 M NaOH solution). Cancrinite crystals of rod-like habit and maximum lengths up to 2 μm were observed and characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDXS) and Fourier transform infrared spectroscopy (FTIR). Magic angle spinning nuclear magnetic resonance spectroscopy (MAS NMR) of the nucleus 31P, thermogravimetry (TG/DTG) and heating experiments under open conditions in a furnace were additionally performed. The empirical formula Na8[SiAlO4]6(PO4)0.58(CO3)0.13(H2O)4.6 was calculated from EDXS analyses and TG data under consideration of a minor carbonate content, detected by FTIR spectroscopy. PO4-CAN is stable up to 800 °C before thermal destruction rapidly occurs at 825 °C. The final product of TG analyses at 1000 °C is a mixture of a nepheline-like phase and the phosphate content of the initial cancrinite sample. XRD and FTIR results of the synthesis product are in good agreement with literature data of the rare mineral depmeierite.
AB - Phosphate cancrinite (PO4-CAN) has been synthesized under mild hydrothermal conditions at 473 K using kaolin, sodium orthophosphate-dodecahydrate and strong alkaline conditions (8 M NaOH solution). Cancrinite crystals of rod-like habit and maximum lengths up to 2 μm were observed and characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDXS) and Fourier transform infrared spectroscopy (FTIR). Magic angle spinning nuclear magnetic resonance spectroscopy (MAS NMR) of the nucleus 31P, thermogravimetry (TG/DTG) and heating experiments under open conditions in a furnace were additionally performed. The empirical formula Na8[SiAlO4]6(PO4)0.58(CO3)0.13(H2O)4.6 was calculated from EDXS analyses and TG data under consideration of a minor carbonate content, detected by FTIR spectroscopy. PO4-CAN is stable up to 800 °C before thermal destruction rapidly occurs at 825 °C. The final product of TG analyses at 1000 °C is a mixture of a nepheline-like phase and the phosphate content of the initial cancrinite sample. XRD and FTIR results of the synthesis product are in good agreement with literature data of the rare mineral depmeierite.
KW - P MAS NMR
KW - framework type CAN
KW - hydrothermal synthesis
KW - microporous solids
KW - phosphate enclathrated zeolites
UR - http://www.scopus.com/inward/record.url?scp=85111571248&partnerID=8YFLogxK
U2 - 10.1002/zaac.202100160
DO - 10.1002/zaac.202100160
M3 - Article
AN - SCOPUS:85111571248
VL - 647
SP - 1647
EP - 1654
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
SN - 0044-2313
IS - 16-17
ER -