Ethyl Tert-Butyl Ether (ETBE) from Isobutylene As Gasoline Bioadditive, The Preparation and Performance Test

ETBE or Ethyl Tertiary Butyl Ether is an oxygenate additive that can be the solution for the air pollution's problems due to carbon emissions, especially CO gas. However, in the process of producing ETBE there is still obstacles in the form of low conversion results. In this study, additive synthesis containing ETBE was carried by using fixed-bed reactor for 1 hour with ethanol and isobutylene reactants and H-ZSM 11 catalyst aid which had a SiO2 / AlO3 50 ratio and a pore volume of 0.2 cm3 / g. The experiment was carried out with temperature variations of 750C - 950C. Based on the GC-MS test, 71% additive and 13% yield were obtained at 900C reactor temperature. This additive raises the octane number from 88.7 to 88.9 with an additive of 1000 ppm at premium base. Addition of 1000 ppm additives in gasoline reduces deposit formation from 0.0186% to 0.0035% and formation of CO emissions from 0.723% to 0.245%. The data resulted in a decrease in deposit formation by 0.0151% and a decrease in CO emissions of 0.478%.