The System Al2O3–B2O3

Aluminothermic reduction of boron oxide for the manufacture of Al–B alloys

“…4e). The two borates, Al 4 B 2 O 9 and Al 18 B 4 O 33 , were reported also by other investigators [21,22]. The progress in the thermite reaction (1) …”

Characterization and hydrodesulfurization activity of CoMo catalysts supported on boron-doped sol–gel alumina

“…The key result here is that the creation of isolated surface BO 4 species in domain I (B/Al < 0.06) produced a particular morphology that deviated from the diagram proposed by Gielisse et al [37]. Note that this local perturbation of the surface of the Al 2 O 3 is catalytically important, as will be discussed in § 4 (Discussion).…”

Long-term oxidation behavior of carbon/carbon composites with a SiC/B4C–B2O3–SiO2–Al2O3 coating at low and medium temperatures

“…Weight loss at 800°C for 5 h (%) [25][26][27]. Thus, the composition of the self-healing outer layer is multi-phase B 4 C-B 2 O 3 -SiO 2 -Al 2 O 3 .…”