Facile synthesis of sulfated mesoporous Zr/ZSM-5 with improved Brønsted acidity and superior activity over SZr/Ag,SZr/Ti,and SZr/W in transforming UFO into biodiesel

Sani, Yahaya Muhammad and Alaba, Peter Adeniyi and Raji-Yahya, Aisha Olatope and Aziz, A.R.Abdul and Daud, Wan Mohd Wan (2015) Facile synthesis of sulfated mesoporous Zr/ZSM-5 with improved Brønsted acidity and superior activity over SZr/Ag,SZr/Ti,and SZr/W in transforming UFO into biodiesel. Journal of the Taiwan Institute of Chemical Engineers, 13 (48). pp. 1-11.

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Abstract

Onthebasisoftheinterplaybetweenthemetalfunctionofoxo-anions,andstructureofzeolitesanditsacidicproperties,wereportaninnovativeapproachforenhancingacidityofsulfatedzirconia,SZ.ThisconcernsthesuperiorityofSZcomprisedofsingle-BrønstedacidsitesdispersedonZSM-5overAg,TiandW.TheinfluenceofdopingZrO2onMFIframeworkofZSM-5wasstudiedagainstothercompositecatalystscharacterizedbytemperature-programmeddesorptionofammonia(NH3-TPD),IRspectraofpyridineadsorption,N2sorption,powderX-raydiffraction,elementalanalysisviaFE-SEMandEDX.Resultsshoweduniformporesize,highmesoporevolume,highsurfacearea,andaciddensitiesonthecatalysts.Despitelowerporesizedistribu-tion,Zr/ZSM-5exhibitedhighesttotalacidity(0.75mmol/g),andactivityinconverting>95%usedfryingoil(48wt.%)overSZr/Ag,SZr/Ti,andSZr/W.Thisisoutstandingconsideringthelowerreactionparameterof5h,5:1methanol-to-oilratio,and200°Ccomparedtopriorarts.Evidently,structureandstrengthofBrønstedacidshavedirecteffectonthecatalyticactivityofthematerials.Thisstudyalsoillustratedprospectsofcon-vertingwastesintobiodiesel,whichisimportantespeciallyagainstthebackdropofthecurrentplummetingpriceofBrentcrudeoil.

Item Type:	Article
Uncontrolled Keywords:	Zirconia Zeolite Solid acid catalyst High free fatty acid Biodiesel
Subjects:	T Technology > T Technology (General) T Technology > TP Chemical technology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Mrs Patricia Nwokealisi
Date Deposited:	20 Aug 2018 11:41
Last Modified:	20 Aug 2018 11:41
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/11392

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