X-ray diffraction pattern of catalysts were taken in order
to characterize the phases and crystallinities of the modified
HZSM-5. All the prepared samples were analyzed at room
temperature by X-ray diffraction using a Bruker D8 Advance
X-ray diffractrometer with monochromatic Cu Kradiation
(wavelengthλ=1.5406 Å at 2θrange from 2
◦
to 40
◦
).