Aluminoborates

Borates. Litde work has been carried out in this area, but some frit-derived glass-ceramics based on alkaline-earth aluminoborate (RAI2B2O2)... 

Other Framework Compositions GrystaUine microporous frameworks have been reported with composihons of beryUophosphate [43], aluminoborate [44], alumi-noarsenate [45], galloarsenate [46], gallophosphate [47], antimonosilicate [48] and germanosilicate [49],... 

Fig. 10 X-Ray diffraction patterns of (a) hexagonal, (6) cubic and (c) lamellar forms of mesoporous calcium aluminoborate (from Ayyappan and Rao27).

Qiu J. R. and Hirao K., Long lasting phosphorescence in Eu -doped calcium aluminoborate glass, Solid. State. Commm. 106 (1998) pp. 795-798. 

MQMAS/HETCOR experiments involving spin-5/2 nuclei have been reported by Chan [93] and more recently by Mali et al. [94] who obtained, respectively, an Al —MQHETCOR spectrum of magnesium aluminoborate and Al—> P MQHETCOR spectra of aluminophosphate molecular sieves. The authors of both reports used the z-filter sequence to convert both triple-quan-... 

Lithium aluminoborate, Li6[Al2(B03)4], is isostructural with the analogous galloborate, forming triclinic crystals (space group Pi).226 The anionic framework [Al2(B03)4 ]=o contains chains parallel to the (OlO)-plane, built up of rings formed by 2 A1 tetrahedra and 2 B triangles, interlinked in one direction by two other B triangles. 

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