CATALYTIC DEHYDRATION OF ETHANOL OVER HIERARCHICALLY POROUS ZSM-5

• Main Author: NUR SALIMA ( NIM : 10512026 ), FITRIA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/22187
• Institution: Institut Teknologi Bandung

Ethene is an important chemical intermediete among petrochemical products. In order to obtain ethene, catalytic dehydration of ethanol was conducted over ZSM-5. Catalytic activity test was conducted at atmospheric pressure and temperature at 200°C, 250°C, and 300°C using fixed bed continuous flow reactor. X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), and N2 physisorption were applied to characterize synthetic and commercial ZSM-5 as well as &#947;-Al2O3. XRD patterns indicate that ZSM-5 were formed. Regarding to N2 physisorption analysis, both synthetic and commercial ZSM-5 have hierarchical porosity with the presence of mesopore diameter of 3 nm which are smaller than mesopore diameter of &#947;-Al2O3 (7 nm) that is used as comparison catalyst. Ethanol concentration was quantified by gas chromatography (GC). The result of catalytic test shows commercial ZSM-5 has high ethanol %-conversion (89%) at 200°C and achieves almost <br /> <br /> <br /> 100% conversion at higher temperature. ZSM-5 catalysts have higher ethanol conversion than &#947;-Al2O3 at all temperature used in this research. Catalyst stability can be observed from the intensity of colour change at the catalysts after being used, in which the catalysts were darkened during the reactions. At the same conversion, commercial ZSM-5 became darker than synthetic ZSM-5. <br />