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Fabrication zone of OSDA-free and seed-free mordenite crystals
Idris A.a, Khalil U.a, AbdulAziz I.a, Makertihartha I.G.B.N.b, Subagjob, Laniwati M.b, Al-Betar A.-R.a, Mukti R.R.b, Muraza O.a
a Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
b Chemical Engineering Department, Institut Teknologi Bandung, Bandung, 40132, 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]© 2018Direct hydrothermal synthesis of mordenite without the addition of both seed and organic template is reported in this work. The role of inorganic cations in the crystal purity and directing the mordenite structure were studied. It was observed that higher Si/Al ratio requires higher alkalinity of the gel. Pure mordenite was obtained using silica gel, colloidal silica and fumed silica. Amorphous material was obtained using tetraethyl orthosilicate (TEOS) due to dissolution problem of TEOS in water. It was also observed that crystal size decrease with decrease in crystallization temperature. The Si/Al ratio can be raised to as high as 50 using silica gel in template-freeprocess. At fixed Na/Si ratio of 0.52, pure mordenite with ratios Si/Al of 15 and 25 could be obtained. Fumed silica favours the formation of rod-like crystals.[/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]Crystallization temperature,Direct hydrothermal synthesis,Dissolution problems,Inorganic cations,Mordenites,Organic templates,OSDA free,Tetraethyl orthosilicates[/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]Mordenite,Morphology,OSDA free,Seed-free[/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]The authors would like to thank Mr. Bakare for part of FE-SEM experiments. The authors would like to acknowledge the funding provided by Saudi Aramco for supporting this work through project contract number 6600011900 as part of the Oil Upgrading theme at King Fahd University of Petroleum and Minerals . The grant from Kemenristekditi was also acknowledged.[/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.powtec.2018.09.041[/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]