Table 1 Observed (in bold) and predicted 3D–3D topotactic transformations of zeolites through chain transformation from dcc to nsc and d4r to nsc.

From: 3D-3D topotactic transformation in aluminophosphate molecular sieves and its implication in new zeolite structure generation

FTCa (parent)

EFb

Channel dimensionality

FTC (transformed)

EFb

Channel dimensionality

Group I: dcc → nsc

 APC

14.4

2D

APD

12.3

2D

 GIS

15.0

3D

GIS_H1

10.3

1D

 SIV

15.3

3D

GIS_H1

10.3

1D

 MER

16.2

3D

MER_H1

12.3

2D

 PHI

15.7

3D

MER_H1

12.3

2D

 GME

16.5

3D

AFI

11.0

1D

Group II: dcc + isolated 4-rings → nsc + sccc

 ATT

15.1

2D

ATT_H1

10.8

2D

 AWO

14.0

2D

ATV

8.9

1D

AWO_H1

12.2

1D

AWO_H2

14.7

1D

 UEI

14.2

2D

UEI_H1

11.2

1D

UEI_H2

11.3

1D

UEI_H3

11.0

1D

UEI_H4

11.3

1D

UEI_H5

11.5

1D

Group III: dcc + other building units → nsc + other building units

PST-5

15.9

2D

PSI

9.2

1D

 DON

10.2

1D

DON_H1

13.2

1D

 STO

9.7

1D

STO_H1

10.6

1D

  1. aFramework Type Code approved by International Zeolite Association.
  2. bFramework energy (kJ (mol Si) – 1) relative to α-quartz.
  3. cSingle crankshaft chain.