[vc_empty_space][vc_empty_space]
Mesoporous ZSM5 having both intrinsic acidic and basic sites for cracking and methanation
Teh L.P.a, Triwahyono S.a, Jalil A.A.a, Mukti R.R.b, Aziz M.A.A.a, Shishido T.c
a Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM Johor Bahru, Johor, 81310, Malaysia
b Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Bandung, 40132, Indonesia
c Department of Applied Chemistry, School of Urban Environmental Sciences, Tokyo Metropolitan University, Hachioji, Tokyo, 192-0397, Japan
[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]© 2015 Elsevier B.V.Mesoporous ZSM5 (mZSM5) was prepared by the dual templating method for n-heptane cracking and CO methanation. The properties of mZSM5 were tailored by varying the aging time in the 0.5-3-day range. The physical properties of the catalysts were characterized with XRD, FESEM, nitrogen physisorption and IR. XRD and FESEM analyses indicated that mZSM5s possessed a high crystalline structure with coffin-type morphology. Nitrogen physisorption analysis revealed the presence of both micropores and mesopores in high surface area mZSM5s with inter- and intra-particle porosity. The pyridine and pyrrole adsorbed IR spectroscopy results demonstrated that mZSM5s have both intrinsic acidic and basic sites, which are suitable for acid and/or base catalyzed reactions. The bare mZSM5-0.5D exhibited the highest rate of conversion of n-heptane (0.0230μmol/m2s) and CO (0.0226μmol/m2s) at 573K and 723K, respectively. The mZSM5s performed with good stability and no deactivation up to 30h for n-heptane cracking and CO methanation. Co-existence of micro-mesopores and intrinsic acidic-basic sites is vital for acid-catalyzed and base-catalyzed reactions.[/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]Base-catalyzed reaction,Basic sites,Crystalline structure,Dual templating,Meso-pores,Mesoporous ZSM-5,n-Heptane cracking,Nitrogen physisorption[/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]Aging times,Dual templating method,Intrinsic acidic-basic sites,Mesoporous ZSM5,Micro-mesopores[/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 was supported by the Universiti Teknologi Malaysia through Research University Grant No. 10J64 and MyPhd Scholarship (Teh Lee Peng) from the Ministry of Higher Education, Malaysia.[/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.cej.2015.01.084[/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]