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Title: MEMBRANE ASSISTED HYDROGEN SYNTHESIS FROM BIOETHANOL
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MEMBRANE ASSISTED HYDROGEN SYNTHESIS FROM BIOETHANOL
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1314-2704
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English
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21
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7.2
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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Considerable effort of scientific community was made in order to substitute traditional energy resources for green and renewable one. One of possible solution of this issue is wide hydrogen application for energy production. Hydrogen can be produced by different ways including water electrolysis, hydrocarbons and alcohols steam reforming, however, in last case hydrogen purification is needed. Membrane hydrogen separation can serve as good alternative compared to rectification or adsorption process. Beside combination of membrane separation process and steam reforming can lead to process efficiency increase. Combined catalytic and membrane separation proses leads to decrease of products concentration in reaction media that leads to appropriate increase of reaction rate. Here study of ethanol steam reforming over catalytic zeolite membrane to produce hydrogen is discussed. Plate multilayer membrane was formulated by consecutive precipitation process and hydrothermal treatment. Height of alumina layer was found to be 2.3 mm, the height of H-ZSM-5 layer was found to be 35 micrometers and height of zirconia layer was 0.5 mm. Membrane consists of alumina support layer, H-ZSM-5 layer and zirconia layer, that was impregnated with nickel and palladium. Incorporation of nickel and palladium was performed using acetate solutions of active metals. Then membrane was dried, calcined and reduced with hydrogen. Formed catalytic membranes were tested in ethanol steam reforming process at weight hourly space velocity (WHSV) equal to 1h-1, temperature range was 400 °C - 700 °C, ethanol to water ratio varies from 0.1 to 1.5. Provided experiments showed maximal reached ethanol conversion up to 90% and hydrogen recovery up to 45% from reaction media, achieved hydrogen separation factor was found to be up to 25.
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conference
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21st International Multidisciplinary Scientific GeoConference SGEM 2021
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21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
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Proceedings Paper
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STEF92 Technology
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SGEM International Multidisciplinary Scientific GeoConference
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
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97-102
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16 - 22 August, 2021
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website
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cdrom
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8050
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bioethanol; zeolite; hydrogen; membrane
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