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Table 1 Calculated O/Al and Si/Al ratios based on atomic percentages measured by EDX

From: Effect of Enhanced Thermal Stability of Alumina Support Layer on Growth of Vertically Aligned Single-Walled Carbon Nanotubes and Their Application in Nanofiltration Membranes

Film O/Al ratio Si/Al ratio
Unstable alumina 2.26 0.24
Stable alumina 2.43 2.22