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. 2024 May 17;63(21):9953–9966. doi: 10.1021/acs.inorgchem.4c01021

Table 3. Degermanation Details and Results on the Zeolites Studied in This Work.

zeolites detemplation method degermanation method Gef initial Gef first deger Gef final deger stabilities
HPM-16 500 °C air for 6 h 0.75% HCl-EtOH 120 °C for 1 day 0.30 n.a. n.a. unstable
HPM-16 100 °C O3 for 20 h 0.75% HCl-EtOH 120 °C for 1 day 0.30 0.26 0.09 800 °C thermal stable
HPM-8 550 °C air for 6 h 1 M HCl (aq) 120 °C for 1 day 0.15 n.a. n.a. poor crystallinity
HPM-8 100 °C O3 for 20 h 1 M HCl (aq) 120 °C for 1 day 0.13 0.04 <0.01 hydrothermal stable in 1 M HCl at 120 °C
HPM-7 100 °C O3 for 20 h 0.75% HCl-EtOH 120 °C for 1 day 0.26 0.18 0.09 stable
HPM-14 100 °C O3 for 20 h 0.75% HCl-EtOH 120 °C for 1 day 0.69 n.a. n.a. unstable
SYSU-3 100 °C O3 for 6 h 0.75% HCl-EtOH 120 °C for 1 day 0.30 n.a. n.a. unstable