TY - JOUR
T1 - Hierarchical ZSM-5 synthesized from Bangka kaolin and Bayat natural zeolite for methane conversion catalysts
AU - Faisal, M.
AU - Abdullah, I.
AU - Krisnandi, Y. K.
N1 - Funding Information:
This worked is funded by International Indexed Publication for Student Research grant (PITTA-B) under contract no. NKB-0636/UN2.R3.1/HKP.05.00/2019 from Directorate of Research and Community Engagement, Universitas Indonesia (DRPM UI).
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020
Y1 - 2020
N2 - Hierarchical ZSM-5 has been successfully synthesized from Bayat natural zeolite as alumina and silica source and Bangka kaolinite as an additional silica source using tetrapropylammonium hydroxide (TPAOH) and poly(acrylamide-co-dialyldimethylammonium chloride) (PDDA-M) as a structure and pore directing agent. XRD pattern shows an evidence of MFI (Mordenite Inverted Framework) structure with peaks at 2θ = 8.01 , 8.90 and 23.15 . SEM images show that the surface of as-synthesized zeolite has coffin-like structure, while EDX analysis shows it has a Si/Al molar ratio of 8.77. The N2 isotherm adsorption exhibited a type IV H4 curve, which indicated the material has mesoporosity, although the Barrett-Joyner-Halenda analysis showed the ZSM-5 has a pore size distribution around 1.937 nm, indicated the micropore dominating its pore size. This confirms that the as-synthesized natural ZSM-5 has hierarchical properties. This as-synthesized natural ZSM-5 then was impregnated with Fe2O3 to improve its catalytic activity towards methane conversion reaction. XRD analysis shows an existence of Fe2O3 at 2θ = 41.22 . Both Fe-impregnated synthetic and natural ZSM-5 show a higher percentage of methane conversion (84.825 % and 86.958 %, respectively), but they give a lower percentage yield of formaldehyde (39.973 % and 32.2 %, respectively) than the parent synthetic and natural ZSM-5.
AB - Hierarchical ZSM-5 has been successfully synthesized from Bayat natural zeolite as alumina and silica source and Bangka kaolinite as an additional silica source using tetrapropylammonium hydroxide (TPAOH) and poly(acrylamide-co-dialyldimethylammonium chloride) (PDDA-M) as a structure and pore directing agent. XRD pattern shows an evidence of MFI (Mordenite Inverted Framework) structure with peaks at 2θ = 8.01 , 8.90 and 23.15 . SEM images show that the surface of as-synthesized zeolite has coffin-like structure, while EDX analysis shows it has a Si/Al molar ratio of 8.77. The N2 isotherm adsorption exhibited a type IV H4 curve, which indicated the material has mesoporosity, although the Barrett-Joyner-Halenda analysis showed the ZSM-5 has a pore size distribution around 1.937 nm, indicated the micropore dominating its pore size. This confirms that the as-synthesized natural ZSM-5 has hierarchical properties. This as-synthesized natural ZSM-5 then was impregnated with Fe2O3 to improve its catalytic activity towards methane conversion reaction. XRD analysis shows an existence of Fe2O3 at 2θ = 41.22 . Both Fe-impregnated synthetic and natural ZSM-5 show a higher percentage of methane conversion (84.825 % and 86.958 %, respectively), but they give a lower percentage yield of formaldehyde (39.973 % and 32.2 %, respectively) than the parent synthetic and natural ZSM-5.
UR - http://www.scopus.com/inward/record.url?scp=85096464223&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/902/1/012045
DO - 10.1088/1757-899X/902/1/012045
M3 - Conference article
AN - SCOPUS:85096464223
SN - 1757-8981
VL - 902
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012045
T2 - 4th International Symposium on Current Progress in Functional Materials, ISCPFM 2019
Y2 - 6 November 2019 through 7 November 2019
ER -