Synthesis and characterization of novel open-framework cobalt phosphates from aqueous-alcoholic systems

Jihong Yu, Qiuming Gao, Jiesheng Chen, Ruren Xu

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

4 Citations (Scopus)

Abstract

Three amine-occluding open-framework cobalt phosphates, CoPO4-n (n=1–3) have been synthesized from aqueous-alcoholic systems of Co(Ac)2-H3PO4-R-EG-H2O, where R stands for an amine and EG for ethylene glycol. It is found that diamines can be exclusively used as the structure-directing templates during the crystallization of open-framework cobalt phosphates. The structures of CoPO4-n were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), inductively coupled plasma (ICP) analysis, infrared spectroscopy (IR) and UV-Vis diffuse reflectance spectroscopy (DRS). The as-synthesized compounds are all blue in color and exhibit UV-Vis spectra characteristic of tetrahedrallycoordinated Co atoms. Thermal analysis shows that the templates occluded in CoPO4-n decompose endothermally at 400–450 °C, and after the template decomposition, the materials become X-ray amorphous.

Original languageEnglish
Title of host publicationProgress in Zeolite and Microporous Materials
EditorsHakze Chon, Son-Ki Ihm, Young Sun Uh
PublisherElsevier Inc.
Pages381-388
Number of pages8
ISBN (Print)9780444823441
DOIs
Publication statusPublished - 1 Jan 1997
Externally publishedYes

Publication series

NameStudies in Surface Science and Catalysis
Volume105
ISSN (Print)0167-2991

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