S. Ashtekar et al., SMALL PORE ALUMINUM PHOSPHATE MOLECULAR-SIEVES WITH CHABAZITE STRUCTURE - INCORPORATION OF COBALT IN THE STRUCTURES -34 AND -44, Journal of physical chemistry, 99(18), 1995, pp. 6937-6943
CoAPO and CoSAPO with -34 and -44 framework structures have been synth
esized. The presence of cobalt in the framework has been established b
y a number of experimental techniques. Distribution of cobalt in the c
rystal was heterogeneous for the CoAPSOs. Using electron microprobe an
alysis, it was observed that cobalt is homogeneously distributed in th
e CoAPOs while in the CoSAPOs it has higher concentration near the cen
ter of the crystal that progressively decreases toward the edges.