When impregnated with manganiferous precursors, γ-Al₂O₃ may be converted into α-Al₂O₃ under relatively mild and energy-saving conditions. In this work, a manganese assisted conversion to corundum at temperatures as low as 800 °C is investigated. To observe the alumina phase transition, XRD and solid-state ²⁷Al-MAS-NMR are applied. By post-synthetical treatment in concentrated HCl, residual manganese is removed up to 3 wt.-%. Thereby, α-Al₂O₃ with a high specific surface area of 56 m² g⁻¹ is obtained after complete conversion. Just as for transition alumina, thermal stability is an important issue for corundum. Long-term stability tests were performed at 750 °C for 7 days. Although highly porous corundum was synthesized, the porosity decreased with time at common process temperatures.

Flexible carriers that combine high drug loading and favorable drug compatibilities with a wider spectrum of more defined release properties are needed to broaden the scope of transdermal drug delivery systems (TDDS). Here, we transform rigid porous glass into flexible textile architectures by drawing SiO ₂ ‐B ₂ O ₃ ‐Na ₂ O fibers (50 and 150 µm in diameter), inducing phase separation through controlled thermal treatment, and generating porosity via selective leaching. Differential scanning calorimetry revealed glass transition temperatures ( T _g ) to be 40°C–50°C higher for fibers than for bulk glass, necessitating higher treatment temperatures in order to obtain comparable mesoporosity. After leaching, all materials exhibited ∼20 nm pores. Woven textiles were fabricated using non‐porous S2 warp threads and porous glass weft fibers, yielding 2 × 2 cm ² fabrics with preserved flexibility. Using anastrozole as a model drug, in vitro release experiments in a stirred container showed geometry‐dependent drug release. Membranes delivered the payload within ∼10 min. Alkaline‐leached textiles displayed a similar burst profile but markedly higher loading capacities. Acid‐leached textiles containing residual colloidal silica showed a gradual release over 24 h, reflecting increased tortuosity. Collectively, these results demonstrate that porous glass fiber textiles unite macroscopic flexibility with tunable pore architecture and drug transport, offering an inorganic platform that spans rapid to sustained release regimes and complements polymer‐based TDDS.