MTW
Framework Type
MTW
Powder Diffraction Pattern for ZSM-12, Calcined
Set Parameters:
2θ range:
°
-
°
Step size:
°2θ
Background:
Polarization factor:
Wavelength:
As specified
CrA1 (2.28970 Å)
CrA2 (2.29361 Å)
Cr (2.29090 Å)
FeA1 (1.93604 Å)
FeA2 (1.93998 Å)
Fe (1.93730 Å)
CuA1 (1.54056 Å)
CuA2 (1.54439 Å)
Cu (1.54180 Å)
MoA1 (0.70930 Å)
MoA2 (0.71359 Å)
Mo (0.71070 Å)
AgA1 (0.55941 Å)
AgA2 (0.56380 Å)
Ag (0.56080 Å)
or
Å
keV
Peak shape parameters
(The pattern is calculated using a pseudo Voigt function with FWHM = sqrt(U + V tan θ + W tan
2
θ))
:
Peak range:
FWHM
Mixing parameter:
%
Peak width:
set UVW at
calculate UVW such that
U =
FWHM =
at
°2θ
V =
FWHM =
at
°2θ
W =
FWHM =
at
°2θ
Intensity scale:
Reference peak, scaled to
,
is the
highest peak in 2θ range
peak closest to
°2θ
reflection (hkl)
Plot parameters:
Output:
on screen
Postscript
HP-GL
ASCII
Size:
small (410x310)
medium (640x480)
large (880x650)
Intensity axis:
-
List hkl and intensity
plot powder pattern
Crystal data:
Composition:
[
Si
56
O
112
]
Refined composition:
[
Si
56
O
112
]
Space group:
C12/c1
(# 15)
Setting:
Cell parameters:
a
=
24.8633Å
b
=
5.01238Å
c
=
24.3275Å
α =
90°
β =
107.7215°
γ =
90°
Refinement:
X-ray Rietveld refinement, R
exp
=0.058, R
wp
=0.181, R
I
=0.069
Reference:
Fyfe, C.A., Gies, H., Kokotailo, G.T., Marler, B. and Cox, D.E.
J. Phys. Chem.
,
94
, 3718-3721 (1990)
Atomic Coordinates:
Atom
Form Factor
x
y
z
PP
B(iso)
SI1
Si
0.4402
0.5319
0.4129
1
0
SI2
Si
0.0678
-0.0708
0.4589
1
0
SI3
Si
0.3754
0.0320
0.3609
1
0
SI4
Si
0.1338
0.4218
0.4484
1
0
SI5
Si
0.2836
0.0822
0.4275
1
0
SI6
Si
0.2139
0.5853
0.3832
1
0
SI7
Si
0.2869
0.0100
0.2463
1
0
O1
O
0.4280
0.5053
0.4730
1
0
O2
O
0.5034
0.4725
0.4225
1
0
O3
O
0.4245
0.8220
0.3872
1
0
O4
O
0.3301
-0.0045
0.3956
1
0
O5
O
0.0841
-0.3624
0.4513
1
0
O6
O
0.3452
-0.0218
0.2972
1
0
O7
O
0.2504
0.2441
0.2629
1
0
O8
O
0.2602
0.3716
0.4078
1
0
O9
O
0.1554
0.5101
0.3911
1
0
O10
O
0.1853
0.4480
0.5026
1
0
O11
O
0.2997
0.0905
0.1886
1
0
O12
O
0.3995
0.3370
0.3702
1
0
O13
O
0.1069
0.1372
0.4394
1
0
O14
O
0.2343
0.8828
0.4093
1
0
Copyright © 2007 Structure Commission of the International Zeolite Association (
IZA-SC
)
