Open AccessOn The Synthesis of ZSM-5 Directly from Kaolin Bangka with Aging Time
Author(s) -
Djoko Hartanto,
Agung Bagus Pambudi,
D. N. Cahyanti,
Wahyu Prasetyo Utomo
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/588/1/012039
Subject(s) - crystallinity , zsm 5 , materials science , hydrothermal circulation , accelerated aging , hydrothermal synthesis , mineralogy , nuclear chemistry , composite material , chemical engineering , chemistry , zeolite , catalysis , organic chemistry , engineering
ZSM-5 has been synthesized in this study using hydrothermal method with addition of ZSM-5 seed. Synthesis of ZSM-5 in this study using kaolin bangka as alumina source with aging time of 0, 12, 24 and 36 hours and the effect of aging time was also investigated. Samples were characterized by XRD, FT-IR, SEM and SEM EDX. ZSM-5 samples with aging 24 hours has the highest intensity at 2θ = 23.03° with crystallinity of 69.60%. The vibration at wavenumbers 540 and 1220 cm −1 was shown in the sample with 24 hours aging, it was indicated that a large number of pentasil rings have been formed. These results are consistent with XRD data which shows that samples with aging 24 hours have the highest crystallinity. The size of ZSM-5 sample with an aging time 24 hours was about 4.5 μm. EDX results obtained Si / Al ratio in samples with aging time 0, 12 hours and 24 hours is 10.77; 11.23 and 8.34. All samples showed a Si / Al ratio above 5 which showed that the ZSM-5 had been formed. But morphologically, samples with aging 24 hours have a more uniform crystal shape.