Abstract
Several H-zeolite and HZSM-5 catalysts was preparated and their characters have also been investigated. H-zeolit Catalyst was preparated from Natural Zeolite that obtained from Malang District and Gunung Kidul District. Diethyl ether was produced by Ethanol with concentration of 95%. This research use fixed bed reactor that 1 gram of catalyst as bed catalyst, atmospheric pressure and temperature 140 o C as the operating condition. Ethanol vapor from vaporization tank was driven by 200 ml/min Nitrogen stream. The responds in this research is liquid product concentration; diethyl ether, ethanol, methanol and water concentration. The results showed that the largest ethanol conversion was produced by the use of 56.44% HZSM-5 and the largest yield of diethyl ether diethyl was produced by the use of alumina and H-zeolite catalyst. The larger ratio between natural zeolite with HCl solvent will produce the larger surface area of catalyst and ethanol conversion. The largest ethanol conversion was produced at reactan ratio 1:20. [Keywords: catalyst; ethanol conversion; dehydration process; yield of diethyl ether; natural zeolite].
Highlights
Diethyl ether is one of the most important commercial ether
Characteristics test is analyzed with X-ray Diffraction (XRD)
With a domination of Si composition, Catalyst tends to have a form as Silicate for KZ A and Modernite for KZ B
Summary
Diethyl ether is one of the most important commercial ether. In industry, Diethyl ether is often used as a solvent of organic reactions such as oil, fat, latex, micro cellulose, perfume, alkaloid solvent. Diethyl ether can be produced using homogenous catalyst (sulfuric acid/Barbet process) and heterogeneous catalyst. The second process, heterogeneous catalyst, uses alumina catalyst In this process, ethanol conversion per pass and its yield is 60-80 and 90% respectively [1]. The use of alumina catalyst in ethanol dehydration process produces a low ethanol conversion and diethyl ether yield. Et al [5] used H-modernite type of zeolite for ethylene production In this production process, ethanol was dehydrated to be diethyl ether and subsequently becomes ethylene. Et al [6] has a research about ethanol dehydration process with Kalium saline and silver from tungstophosphoric acid (HPW) by varying the type and the number of cation KxH3−xPW12O40 and AgxH3−xPW12O40. The result showed that there was an improvement in ethylene selectivity [7]
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