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Sequential mechanochemical and recrystallization methods for synthesizing hierarchically porous ZSM-5 zeolites
Kadja G.T.M.a, Suprianti T.R.a, Ilmi M.M.a, Khalil M.b, Mukti R.R.a, Subagjoa
a Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, 40132, Indonesia
b Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, 16424, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2020 Elsevier Inc.The development of hierarchical porosity is crucial to overcome the diffusion issue within the zeolite frameworks. Herein, we have successfully developed a sequential mechanochemical treatment and recrystallization in the presence of cetyltrimethylammonium molecules for synthesizing the hierarchically porous ZSM-5 zeolite. The former transforms the large, micron-sized ZSM-5 crystals into nanosized particles with a notable decline in crystallinity due to the high mechanical force. In contrast, the latter converts the nanosized particles into highly crystalline ZSM-5 with preserved size. The products are shown to be aggregates of nanosized ZSM-5 with abundant intercrystalline mesopores. Cetyltrimethylammonium molecules play an inevitable role in preventing excessive coalescence and crystal growth and assemble the nanosized zeolites. In the absence of cetyltrimethylammonium, the recrystallization merely results in the micron-sized ZSM-5 crystals. The hierarchical porosity obtained in this study is proven to relieve the diffusion constraint and improve the catalytic performance in LDPE pyrolysis.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Catalytic performance,Cetyltrimethylammonium,Diffusion constraints,Hierarchical porosity,Hierarchically porous,Mechanochemical treatment,Nano-sized particles,Nanosized zeolites[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Hierarchically porous ZSM-5,Mechanochemical,Mesopores,Recrystallization[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][{‘$’: ‘This work is financially supported by Hibah Penelitian, Pengabdian kepada Masyarakat dan Inovasi ITB (P3MI-ITB) 2019 (No. 1000K/I1.C01/PL/2019). MMI thanks to the PMDSU scholarship from the Ministry of Education and Culture, Republic of Indonesia. The authors thank Mr. Ramadhan Dipta Maula for providing us the LDPE samples.’}, {‘$’: ‘This work is financially supported by Hibah Penelitian, Pengabdian kepada Masyarakat dan Inovasi ITB (P3MI-ITB) 2019 (No. 1000K/I1.C01/PL/2019 ). MMI thanks to the PMDSU scholarship from the Ministry of Education and Culture, Republic of Indonesia. The authors thank Mr. Ramadhan Dipta Maula for providing us the LDPE samples.’}][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.micromeso.2020.110550[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]