KONVERSI METIL OLEAT MENJADI ALKANA RANTAI LEBIH PENDEK METHYL OLEATE CONVERSION INTO SHORTER CHAIN ALKANES

• Main Authors: , D. Setyawan Purwo Handoko, S.Si.,M.Si., , Prof. Dr. Triyono, SU.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2013
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/125388/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=65556

The investigations of methyl oleate (methyl 9-octadecenoate) to convert 1- octadecanol, 1-octadecanol to 1-octadecene, and 1-octadecene to short chain�s alkanes and alkenes have been done. The conversion was carried out using ZSiA and Ni/ZSiA catalysts and fixed bed reactor that was operated at 400, 450, and 500 oC. ZSiA catalyst was prepared by washing zeolite with aquadest, followed by dipping in HCl 2M solution, adding Na2SiO3 5% b/b, dipping in NH4Cl 2M, calcination at 500 oC under nitrogen with flow rate of 20 mL/min for 2 hours, oxydation under oxygen flow rate of 20 mL/min and impregnation of Ni metal into catalyst surface using Ni(NO3)2٠6H2O 2% b/b. The catalyst was then oxydized under oxygen flow rate of 20 mL/min for 2 hours and reduced under hydrogen flow rate of 20 mL/min for 2 hours. Characterization of the catalyst included determination of metal content using AAS, acidity using gravimetric method, surface area using Gas Sorption Analyzer NOVA 1000, and crystallinity using XRD. The fixed bed reactor was filled by catalyst and heated up to 400 oC under hydrogen flow rate of 20 mL/min. Then the feed (methyl oleate, 1-octadecanol, 1-octadecene) in evaporator was heated up to 400 oC under hydrogen flow rate of 20 mL/min. The reaction product was collected in glass tube and analyzed using GC-MS Catalytic hydrogenation of methyl oleate produced 87,21% of 1-octadecanol as major product. 1-octadecanol product decreased significantly by the increase of hydrogen flow rate from 20 to 60 mL/min and for 5 to 15 grams catalysts. The catalytic hydrogenation of 1-octadecanol produced 1-octadecena using ZSiA catalyst increased significantly by the increase of hydrogen flow rate from 20, 40 and 60 mL/min and for 400, 450 and 500 oC. Major product of hydrocracking catalytic 1- octadecanol to 1-octadecena, 5-octadecena and 9-octadecena can reached 20,21%, 14,37% and 10,40%. Catalytic hydrocracking of 1-octadecene using Ni/ZSiA under 10 mL/min hydrogen flow rates produced maximum product at 450 oC. The activity of Ni/ZSiA catalyst at 450 oC showed maximum result (15,29 %) in producing alkanes and alkenes compounds with chains less than or equal to C12.