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. 2021 Mar 29;2021:5554568. doi: 10.1155/2021/5554568

Table 4.

Synthesis parameters of high-silica CHA zeolites by interzeolite transformation in fluoride media and some product properties.

Sample no. Synthesis conditions Product
Si, Al source Si/Al H2O/SiO2 Phase Si/Al V mic (cm3/g)
23 CBV500 2.5 3 FAU
24 CBV712 6.0 3 CHA + FAU
25 CBV720 15.0 3 CHA 14.7 0.26
26 CBV720 + CBV760 22.0 3 CHA 21.1
27 CBV760 30.0 3 CHA 28.1 0.27
29 HUA385 50.0 3 CHA 45.3
30 HUA390 150.0 3 CHA 136.9 0.27
31 HUA390 150.0 10 STT + CHA
32 HUA390 150.0 15 STT 0.20

DMECHA was also used in addition to TMAda, and the rest of the CHA samples were prepared using TMAda as the OSDA.