3. Results and discussion
3.1. X-ray diffraction and SEM studies
Fig. 1 shows the X-ray diffraction patterns of synthesized mordenite
sample without organic template. As shown in Fig. 1 in the
XRD pattern of the prepared mordenite powder, diffraction peaks
corresponding to the typical structure of mordenite are observed
[13,14]. This indicates that the synthesized samples are mordenite
crystals. The average crystal sizes of the prepared materials were
determined using the Scherrer equation [15]. The size of crystals
obtained with X-ray method is the effective length, measured in
the direction of the diffraction vector, along which diffraction is
coherent. The term crystal size is preferred over particle size, since
individual particles may contain several crystals or domains having
different orientation [16]. The crystal size obtained by applying
Scherrer’s equation is interpreted as an average crystal dimension,
perpendicular to the reflection plane [17]. The accuracy of crystal
size determination is usually no better than 20–40%, because the
sample analyzed do not have crystals of uniform size, but rather
3. Results and discussion
3.1. X-ray diffraction and SEM studies
Fig. 1 shows the X-ray diffraction patterns of synthesized mordenite
sample without organic template. As shown in Fig. 1 in the
XRD pattern of the prepared mordenite powder, diffraction peaks
corresponding to the typical structure of mordenite are observed
[13,14]. This indicates that the synthesized samples are mordenite
crystals. The average crystal sizes of the prepared materials were
determined using the Scherrer equation [15]. The size of crystals
obtained with X-ray method is the effective length, measured in
the direction of the diffraction vector, along which diffraction is
coherent. The term crystal size is preferred over particle size, since
individual particles may contain several crystals or domains having
different orientation [16]. The crystal size obtained by applying
Scherrer’s equation is interpreted as an average crystal dimension,
perpendicular to the reflection plane [17]. The accuracy of crystal
size determination is usually no better than 20–40%, because the
sample analyzed do not have crystals of uniform size, but rather
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