MFI

184

MFI

Framework Type

Pnma

framework viewed along [010] Idealized cell constants:

orthorhombic, Pnma, a = 20.1A., b = 19.7/~, c = 1 3 . 1 '

Coordination sequences and vertex symbols:

Tl (8, 1) T2(8,1 ) T 3 (8, 1) T4(8,1) T5(8,1) T6(8,1) W7 (8, 1) T8(8,1) T9(8,1) Tl0(8,1) Ttl (8, 1) T12(8, 1)

Secondary building units:

5-1

4 4 4 4 4 4 4 4 4 4 4 4

12 12 12 12 12 12 12 12 11 11 12 12

41 39 37 36 38 40 38 37 39 36 38 38

61 64 62 61 63 61 56 63 62 61 59 59

88 91 91 90 93 88 90 90 93 93 92 89

125 117 120 122 123 124 132 121 119 120 125 126

159 158 157 159 157 156 164 155 153 154 159 161

198 209 206 196 206 197 193 201 204 200 202 196

250 247 250 251 247 253 241 253 254 255 250 246

5-5.5.102"52.6 5.5.5.52-5"103 5-5.5.52-5.103 5.5.5.52.5.6 5.5.5.62-5.103 5.5.5.5.52-103 5.62.52.62.10.10 5.5.5.5.5-6 4.5.5.62.5.103 4.5.5.62.5.103 5.5.5.6.5.62 5"62"5"102"52"62

7q

Loop configuration of T-Atoms: T1.8,11,12

Isotypic framework structures:

22 22 23 21 24 22 24 21 23 22 22 23

T %.,0

9 ZSM.5 ~13) (See Appendix A for additional structures and references)

References: (1) (2) (3)

Kokotailo, G.T., Lawton, S.L., Olson, D.H. and Meier, W.M. Nature, 272, 437-438 (1978) Olson, D.H., Kokotailo, G.T., Lawton, S.L. and Meier, W.M.J. Phys. Chem., 85, 2238-2243 (1981) van Koningsveld, H., van Bekkum, H. and Jansen, J.C. Acta Crystallogr., B43, 127-132 (1987)

185

ZSM-5

Type Material

Crystal chemical data:

INa*n (H20)161 [AlnSi96.nOI92]-MFI, n < 27 orthorhombic, Pnma, a = 20.07,~, b = 19.92,~, c = 13.42,~ ~2~

F r a m e w o r k density:

17.9 T/1000]k 3

Channels:

{[100] 10 5.1 x 5.5 ~

[010] 105.3 x 5.6}***

lO-ring viewed along [010]

MFI