Kinetika hidrodesulfurisasi tiofen dengan katalis CoMo/Al2O3

ROBIAH, Dr.Ir. Bardi Murachman, SU.,DEA

2002 | Tesis | S2 Teknik Kimia

Tiofen adalah senyawa sulfur yang terkandung dalam minyak bumi. Senyawa ini periu dihiiangkan aiau dikurangi karena ciapat menyebabkan korosi pada alat pabrik. Tiofen juga merupakan racun terhadap katalis Pt pada proses katalitik reforming di pengolahan minyak burni, serta. menghasiikaii gas beracun SO2 dari hasil peimikaian bahar. bakar kendaraan bermotor. Proses penghilangan senyawa sulfur dilakukan dengan cara hidrodesulfurisasi yaitu proses penghilangdn sulfur dengari hidrogenasi menghasiikan gas hidrogen sulfida dan hidrokarbon. Penelitian ini bertujuan mempelajari kinetika reaksi hidrodesulfurisasi tiofen dengan variabel yang diteliti pengaruh konsentrasi tiofen (1,82 - 3,2 % berat) dan suhu. Campuran gas tiofen dan gas hidrogen diumpankan ke reaktor Fixed bed bertekanan 1 atmosfir mehi ui bed reaklor yarig berisi katalis CoMo dengan penyangga A1203. Gas yang keluar dari reaktor dikondensasikan, kemudian gas dan cairan dipisahkan. Cairannya ditampung setelah keadaan ajeg dan gas sisa dinetralkan dengan larutan NaOH sebelum dibuang ke udara. Cairan dianalisis dengan Gas Chromatography. Hasil penelitian menunjukkan bahwa reaksi yang tejadi mengikuti mekanisme reaksi teori Eley-Rideal dengan reaksi : (Rumus)

One of petroleum contents is tiniophene, which is a sulfur compound. This compound should be removed or reduced because of corrosion that attack factory equipment and poisoning Pt catalyst in catalytic reforming process during petroleum processing. Thiophene also produces hazardous gas (SOz) which represents an undesired product ot fuel combution in automobiles. Removing sulfur compound was done using hydrodesulfurization, which is a process of removing sulfur by hydrogenation to covert into hydrogen sulfide and hydrocarbon. The objective of this research is to study the kinetics of thiophene hydrodesulfurization with feed concentration of thiophene ( I ,82 - 3,12 96 weight) and temperature (250 - 275 "C) as variables to be examined. A mixture of thiophene and hydrogen gases was entered in a fixed bed reactor having a pressure 1 atm through a bed reactor, which contains CoMo catalyst and Al2O3 support. After being condensed, the gas that exits the reactor was separated from liquid. The liquid was collected after steady state conditions being reached and the remainded gas was thrown out to surrounding after being neutralized with NaOH solutian. The liquid was then analyzed by Gas Chromatography. The outcome of this research showed that the reaction examined followed the reaction mechanism of Eley-Kideal theory : (formula)

Kata Kunci : Hidrodesulfurisasi, Kinetika, Tiofen, Hydrodesulfurization, Kinetics, Thiophene