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• W1967742134 endingPage "2070" @default.
• W1967742134 startingPage "2065" @default.
• W1967742134 abstract "Alumina-boria samples with B : (B + Al) 0–50 atom% have been prepared by an unconventional procedure consisting of the reductive decomposition of the mixture of nitrates in the presence of glycerol X-ray diffraction (XRD)-amorphous samples having surface areas of 380–470 m2 g–1 were obtained after calcination at 673 K. Their thermal stability has been studied by differential thermal analysis (DTA) and XRD analysis, showing that crystallization occurred in all cases above 1150 K. FTIR data show the predominance of octahedral Al3+ and triangular B3+ both in the bulk and on the surface. Correspondingly, all samples show lower catalytic activity in methanol dehydration compared with γ-alumina. It was concluded that boron tends to hinder crystallization of amorphous alumina, to increase its surface area and to further decrease it surface acidity." @default.
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• W1967742134 date "1992-01-01" @default.
• W1967742134 modified "2023-10-01" @default.
• W1967742134 title "Characterization of microporous amorphous alumina–boria" @default.
• W1967742134 cites W1964304220 @default.
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• W1967742134 doi "https://doi.org/10.1039/ft9928802065" @default.
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