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Bukhanko, Natalia
Publications (3 of 3) Show all publications
Bukhanko, N., Schwarz, C., Samikannu, A., Ngoc Pham, T., Siljebo, W., Wärnå, J., . . . Mikkola, J.-P. (2017). Gas phase synthesis of isopropyl chloride from isopropanol and HCl over alumina and flexible 3-D carbon foam supported catalysts. Applied Catalysis A: General, 542(25), 212-225
Open this publication in new window or tab >>Gas phase synthesis of isopropyl chloride from isopropanol and HCl over alumina and flexible 3-D carbon foam supported catalysts
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2017 (English)In: Applied Catalysis A: General, ISSN 0926-860X, E-ISSN 1873-3875, Vol. 542, no 25, p. 212-225Article in journal (Refereed) Published
Abstract [en]

Isopropyl chloride synthesis from isopropanol and HCl in gas phase over ZnCl2 catalysts supported on Al2O3 as well as flexible carbon foam was studied in a continuous reactor. A series of catalytic materials were synthesised and characterised by BET, XPS, SEM, TEM, XRD and NH3-TPD methods. Catalytic activity tests (product selectivity and conversion of reactants) were performed for all materials and optimal reaction conditions (temperature and feedstock flow rates) were found. The results indicate that the highest yield of isopropyl chloride was obtained over 5 wt.% ZnCl2 on commercial Al2O3 (No. II) (95.3%). Determination of product mixture compositions and by-product identification were done using a GC-MS method. Carbon foam variant catalyst, 5 wt.% ZnCl2/C, was found to perform best out of the carbon-supported materials, achieving ∼75% yield of isopropyl chloride. The kinetic model describing the process in a continuous packed bed reactor was proposed and kinetic parameters were calculated. The activation energy for the formation of isopropyl chloride reaction directly from isopropanol and HCl was found to be ∼58 kJ/mol.

Place, publisher, year, edition, pages
Elsevier, 2017
Keywords
Isopropyl chloride; Heterogeneous catalysis; Isopropanol; Hydrochlorination; Zinc chloride; Alumina oxide; Carbon foam; Highly porous catalyst
National Category
Chemical Sciences
Identifiers
urn:nbn:se:umu:diva-127043 (URN)10.1016/j.apcata.2017.05.013 (DOI)000405765200019 ()
Projects
Bio4Energy
Available from: 2016-10-26 Created: 2016-10-26 Last updated: 2019-09-02Bibliographically approved
Bukhanko, N., Wärnå, J., Samikannu, A. & Mikkola, J.-P. (2016). Kinetic modeling of gas phase synthesis of ethyl chloride from ethanol and HCl in fixed bed reactor. Chemical Engineering Science, 142, 310-317
Open this publication in new window or tab >>Kinetic modeling of gas phase synthesis of ethyl chloride from ethanol and HCl in fixed bed reactor
2016 (English)In: Chemical Engineering Science, ISSN 0009-2509, E-ISSN 1873-4405, Vol. 142, p. 310-317Article in journal (Refereed) Published
Abstract [en]

Kinetic modeling of gas-phase synthesis of ethyl chloride from ethanol and hydrochloric acid over high porous Al2O3 and 2 wt% ZnCl2/Al2O3 catalysts was studied in a continuous plug flow reactor in the temperature range of 200–325 °C. Two rival kinetic models were proposed that both describe the kinetics well. The kinetic parameters of the reaction were determined and activation energy values for ethyl chloride formation from ethyl alcohol and diethyl ether reactions were calculated.

Keywords
Ethyl chloride, Kinetic modeling, Gas-phase reaction, Heterogeneous catalysis
National Category
Chemical Sciences
Identifiers
urn:nbn:se:umu:diva-114093 (URN)10.1016/j.ces.2015.12.005 (DOI)000369068500027 ()
Projects
Bio4Energy
Available from: 2016-01-13 Created: 2016-01-13 Last updated: 2019-08-29Bibliographically approved
Bukhanko, N., Samikannu, A., Larsson, W., Shchukarev, A., Leino, A.-R., Kordas, K., . . . Mikkola, J.-P. (2013). Continuous gas phase synthesis of 1-ethyl chloride from ethyl alcohol and hydrochloric acid over Al2O3-based catalysts: the ‘green’ route. ACS Sustainable Chemistry & Engineering, 1(8), 883-893
Open this publication in new window or tab >>Continuous gas phase synthesis of 1-ethyl chloride from ethyl alcohol and hydrochloric acid over Al2O3-based catalysts: the ‘green’ route
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2013 (English)In: ACS Sustainable Chemistry & Engineering, Vol. 1, no 8, p. 883-893Article in journal (Refereed) Published
Abstract [en]

The synthesis of 1-ethyl chloride in the gas-phase mixture of ethanol and hydrochloric acid over ZnCl2/Al2O3 catalysts was studied in a continuous reactor using both commercial and tailor-made supports. The catalytic materials were characterized by the means of structural (XPS, TEM, XRD, and BET) and catalytic activity (selectivity and conversion) measurements. The reaction parameters such as temperature, pressure, and feedstock flow rates were optimized for the conversion of ethanol to ethyl chloride. The new tailor-made highly porous Al2O3-based catalyst outperformed its commercial counterpart by exhibiting high conversion and selectivity (98%) at the temperature of 325 °C. Long-term stability tests (240 h) confirmed the excellent durability of the tailor-made alumina catalysts. The process demonstrated here poses an efficient and economic “green” large-scale on-site synthesis of this industrially important reactant in industry, where bioethanol is produced and 1-ethyl chloride is necessary, e.g., for ethylation of cellulose and synthetic polymer products. On-site in situ production of ethyl chloride avoids the problems associated with the transportation and storage of toxic and flammable 1-ethyl chloride.

Keywords
ethyl chloride, ethanol, heterogeneous catalysis, zinc chloride, high-porosity aluminum oxide
National Category
Chemical Sciences Chemical Engineering
Identifiers
urn:nbn:se:umu:diva-71424 (URN)10.1021/sc300171m (DOI)000322863100004 ()
Available from: 2013-05-29 Created: 2013-05-29 Last updated: 2018-06-08Bibliographically approved
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