SINTESIS KATALIS MCM-41-NH2 DENGAN METODE SONOKIMIA BERBASIS SILIKA LUMPUR SIDOARJO UNTUK TRANSESTERIFIKASI MINYAK GORENG BEKAS; SYNTHESIS OF MCM-41-NH2 CATALYST BY SONOCHEMICAL METHOD BASED ON SILICA FROM LAPINDO MUD FOR TRANSESTERIFICATION OF WASTE COOKING OIL

AL IFAH, ARINI, Triyono

2016 | Skripsi | FMIPA

Synthesis of MCM-41 based on silica from Sidoarjo mud by sonochemical method grafting with amine group from (3-aminopropyl) trimetoxysilane (3-APTMS) to produce the MCM-41-NH2 base catalysts had been investigated. The purposes of this research are to study the effect of sonication time on the crystallinity of the MCM-41 and to verify catalytic activity of the MCM-41-NH2 as a base catalyst in the transesterification of waste cooking oil. The silica was extracted from Sidoarjo mud using 6 M of HCl and NaOH solution. The silica content was characterized by XRF. The synthesis of MCM-41 was carried out by sonochemical method with time variation of 30, 60, 90, 120 and 150 min. Grafting of the 3-APTMS into the MCM-41 was carried out under N/Si mol ratio of 5%. The MCM-41 and MCM-41-NH2 samples were characterized by XRD, FT-IR, BET, and TEM. The transesterification product was characterized by GC-MS. The XRF analysis result showed that the content of silica extracted from Sidoarjo mud was 97.5 % . The XRD analysis of the MCM-41 for 150 min sonication showed the highest characteristic peaks on 2? between 2-5? with specific surface area of 1603 m2/g, pore diameter of 2.57 nm and has a mesoporous character with adsorption and desorption isotherm pattern of type IV and hysteresis loops of type H1. The TEM images of the MCM-41 showed the order pore distribution. The MCM-41-NH2 catalyst has specific surface area of 1037 m2/g with pore diameter of 2.39 nm. Product conversion of transesterification of the waste oil was 52,1 %.

Kata Kunci : Sonochemical, MCM-41, MCM-41-NH2, Sidoarjo mud, transesterification.