Kinetics of ethanol hydrochlorination over γ-Al2O3 in a microstructured reactor

被引：4

作者：

Schmidt, Sabrina A. ^{[1
]}

Balme, Quentin ^{[2
]}

Gemo, Nicola ^{[1
]}

Kumar, Narendra ^{[1
]}

Eranen, Kari ^{[1
]}

Murzin, Dmitry Yu. ^{[1
]}

Salmi, Tapio ^{[1
]}

机构：

[1] Abo Akad Univ, Dept Chem Engn, Lab Ind Chem & React Engn, Johan Gadolin Proc Chem Ctr PCC, FI-20500 Turku, Finland

[2] Univ Lyon, CPE Lyon, FR-69616 Villeurbanne, France

来源：

CHEMICAL ENGINEERING SCIENCE | 2015年 / 134卷

基金：

芬兰科学院;

关键词：

Ethyl chloride; Microreactor; Kinetics; Alumina; Chloroethane; Hydrochlorination; METHYL-CHLORIDE SYNTHESIS; DEHYDRATION; ALUMINA; ALCOHOLS; WATER;

D O I：

10.1016/j.ces.2015.05.050

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Ethyl chloride was synthesized by ethanol hydrochlorination in the temperature range of 240-340 degrees C. The reaction was performed in two serially coupled microreactors. Besides the main product ethyl chloride, several side-products were formed: ethylene, diethyl ether and acetaldehyde. A maximum ethyl chloride selectivity of 88.5% and 853% ethanol conversion were obtained at 300 degrees C (space time 0.154 s). Higher selectivities and conversions can be obtained at higher space times. Thermodynamic calculations were performed to assess the reversibility of the reactions and the equilibrium composition of the reaction mixture. The developed kinetic model accurately described the concentration profiles of all products in the studied range of temperature and initial reactant concentrations. All reactions were treated as reversible. Adsorption of ethanol and HCl was taken into account in the kinetic modeling. A catalytic effect of HCl concentration on the rates of the dehydration reactions was demonstrated. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：681 / 693

页数：13

共 22 条

[1]

[Anonymous], 2000, KIRK OTHMER ENCY CHE

[2] Continuous Gas-Phase Synthesis of 1-Ethyl Chloride from Ethyl Alcohol and Hydrochloric Acid Over Al2O3-Based Catalysts: The "Green" Route [J].

Bukhanko, Natalia ;

Samikannu, Ajaikumar ;

Larsson, William ;

Shchukarev, Andrey ;

Leino, Anne-Riikka ;

Kordas, Krisztian ;

Warna, Johan ;

Mikkola, Jyri-Pekka .

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2013, 1 (08) :883-893

[3] Density Functional Theory-Computed Mechanisms of Ethylene and Diethyl Ether Formation from Ethanol on γ-Al2O3(100) [J].

Christiansen, Matthew A. ;

Mpourmpakis, Giannis ;

Vlachos, Dionisios G. .

ACS CATALYSIS, 2013, 3 (09) :1965-1975

[4] Kinetics and Mechanism of Ethanol Dehydration on γ-Al2O3: The Critical Role of Dimer Inhibition [J].

DeWilde, Joseph F. ;

Chiang, Hsu ;

Hickman, Daniel A. ;

Ho, Christopher R. ;

Bhan, Aditya .

ACS CATALYSIS, 2013, 3 (04) :798-807

[5]

Ehrfeld W., 2000, ULLMANNS ENCY IND CH

[6] Hydrogen formation in ethanol reforming on supported noble metal catalysts [J].

Erdohelyi, Andras ;

Rasko, Janos ;

Kecskes, Tamara ;

Toth, Mariann ;

Doemoek, Marta ;

Baan, Kornelia .

CATALYSIS TODAY, 2006, 116 (03) :367-376

[7] In-situ characterisation of the surface intermediates for the ethanol dehydration reaction over γ-alumina under dynamic conditions [J].

Golay, S ;

Doepper, R ;

Renken, A .

APPLIED CATALYSIS A-GENERAL, 1998, 172 (01) :97-106

[8] Micromixers -: a review on passive and active mixing principles [J].

Hessel, V ;

Löwe, H ;

Schönfeld, F .

CHEMICAL ENGINEERING SCIENCE, 2005, 60 (8-9) :2479-2501

[9] Chemistry in microstructured reactors [J].

Jähnisch, K ;

Hessel, V ;

Löwe, H ;

Baerns, M .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (04) :406-446

[10] Catalytic dehydration of bioethanol to ethylene: Pilot-scale studies and process simulation [J].

Kagyrmanova, A. P. ;

Chumachenko, V. A. ;

Korotkikh, V. N. ;

Kashkin, V. N. ;

Noskov, A. S. .

CHEMICAL ENGINEERING JOURNAL, 2011, 176 :188-194

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