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A Kinetics Study of Methanol Dehydration To Dimethyl Ether and Catalyst Deactivation Over Γ-Al2o3
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DOR
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20.1001.2.9919199705.1399.11.1.142.7
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نویسنده
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- - ,- - ,- -
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منبع
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كنگره مهندسي شيمي - 1399 - دوره : 11 - یازدهمین کنگره بین المللی مهندسی شیمی - کد همایش: 99191-99705
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چکیده
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The deactivation of γ-alumina catalyst in dehydration of methanol to dimethyl ether (dme) was studied using integral method of analysis# catalytic test runs were performed in a fixed-bed integral reactor in the temperature range of 250-300 ºc# a power-law rate expression was used for dehydration reaction and an independent kinetics for catalyst deactivation# favorable fit was observed for experimental conversion-time data with an order of deactivation of unity# the activation energies of main reaction and catalyst deactivation were obtained as 96 and 69 kj/mol, respectively, implying that the former is more sensitive to temperature rise# never-the-less, the temperature-time trajectory strategy could not be applied for compensating catalyst deactivation with time because of increasing thermodynamic limitation for this exothermic equilibrium-limited reaction#
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کلیدواژه
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Dimethyl Ether ,Methanol Dehydration ,Γ-Al2o3 ,Catalyst Deactivation ,Kinetics
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آدرس
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National Petrochemical Company, Iran, National Petrochemical Company, Iran, National Petrochemical Company, Iran
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Authors
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