DOI: https://doi.org/10.9767/bcrec.15.1.5606.96-103

Catalytic Dehydration of Ethanol over W/TiO2 Catalysts Having Different Phases of Titania Support

1Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand

2Department of Textile Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Pathumthani, Thailand

Received: 15 Aug 2019; Revised: 4 Oct 2019; Accepted: 4 Oct 2019; Available online: 28 Feb 2020; Published: 1 Apr 2020.
Editor(s): Istadi Istadi
Open Access Copyright (c) 2020 by Authors, Published by BCREC Group under http://creativecommons.org/licenses/by-sa/4.0.
Fulltext View|Download

Citation Format:
Cover Image
Abstract

This study aims to investigate the catalytic behaviors on W/TiO2 catalysts having different phases of TiO2 towards catalytic dehydration of ethanol to higher value products including ethylene, diethyl ether, and acetaldehyde. In fact, TiO2 support with different crystalline phases can result in differences of physico-chemical properties of the catalyst. Therefore, the present work reports on the catalytic behaviors that were altered with different phases of TiO2 in catalytic ethanol dehydration to diethyl ether or ethylene as a major product. To prepare the catalysts, three different phases [anatase (A), rutile (R), and mixed phases (P25)] of TiO2 supports were impregnated with 10 wt% of tungsten (W). It was found that the W/TiO2-P25 catalyst revealed higher activity among other catalysts. At 300 °C, all catalysts can produce the diethyl ether yield of 24.1%, 22.8%, and 10.6% for W/TiO2-P25, W/TiO2-A, and W/TiO2-R catalysts, respectively. However, when the reaction temperature was increased to 400°C, ethylene is the major product. The W/TiO2-P25 and W/TiO2-A catalysts render the ethylene yield of 60.3% and 46.2%, respectively, whereas only 15.9% is obtained from W/TiO2-R catalyst. The most important parameter influencing their catalytic properties appears to be the proper pore structure, acidity, and distribution of W species. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

 

Keywords: ethanol dehydration; titania; tungsten; diethyl ether; ethylene
Funding: Chulalongkorn University under contract Cat-React Industrial Project

Article Metrics:

Article Info
Section: Original Research Articles
Language : EN
Recent articles
A Review Paper on Heterogeneous Fenton Catalyst: Types of Preparation, Modification Techniques, Factors Affecting the Synthesis, Characterization, and Application in the Wastewater Treatment Effects of Cobalt and Chromium Loadings to The Catalytic Activities of Supported Metal Catalysts in Methane Oxidation One-pot Synthesis of Carbon-doped TiO2 with Bimetallic Ni-Ag co-catalysts in Photodegradation of Methylene Blue under UV and Visible Irradiation Dynamic Model-Free and Model-Fitting Kinetic Analysis during Torrefaction of Oil Palm Frond Pellets Activity and Stability of Immobilized Lipase for Utilization in Transesterification of Waste Cooking Oil Backmatter (Publication Ethics, Copyright Transfer Agreement Form) Frontmatter (Front Cover, Editorial Team, Indexing, and Table of Contents) More recent articles
  1. Sebayang, A., Masjuki, H., Ong, H.C., Dharma, S., Silitonga, A., Mahlia, T., Aditiya, H. (2016). A perspective on bioethanol production from biomass as alternative fuel for spark ignition engine, RSC Adv., 6, 14964-14992
  2. Huber, G.W., Iborra, S., Corma A. (2006). Synthesis of transportation fuels from biomass: chemistry, catalysts, and engineering, Chem. Rev., 106, 4044-4098
  3. Soh, J.C., Chong, S.L., Hossain, S.S., Cheng, C.K. (2017). Catalytic ethylene production from ethanol dehydration over non-modified and phosphoric acid modified Zeolite HY (80) catalysts, Fuel Process. Technol., 158, 85-95
  4. Alharbi, W., Brown, E., Kozhevnikova, E.F., Kozhevnikov, I.V. (2014). Dehydration of ethanol over heteropoly acid catalysts in the gas phase, J. Catal., 319, 174-181
  5. Kamsuwan, T., Praserthdam, P., Jongsomjit, B. (2017). Diethyl ether production during catalytic dehydration of ethanol over Ru-and Pt-modified H-beta zeolite catalysts, J. Oleo Sci., 66, 199-207
  6. Lee, J., Szanyi, J., Kwak, J.H. (2017). Ethanol dehydration on g-Al2O3: effects of partial pressure and temperature, Mol. Catal., 434, 39-48
  7. Chen, B., Lu, J., Wu, L., Chao, Z. (2016). Dehydration of bio-ethanol to ethylene over iron exchanged HZSM-5, Chinese J. Catal., 37, 1941-1948
  8. Onfroy, T., Clet, G., Bukallah, S.B., Visser, T., Houalla, M. (2006). Acidity of titania-supported tungsten or niobium oxide catalysts: correlation with catalytic activity, Appl. Catal. A., 298, 80-87
  9. Phung, T.K., Hernández, L.P., Busca, G. (2015). Conversion of ethanol over transition metal oxide catalysts: effect of tungsta addition on catalytic behaviour of titania and zirconia, Appl. Catal. A., 489, 180-187
  10. Jongsomjit, B., Wongsalee, T., Praserthdam, P. (2005). Characteristics and catalytic properties of Co/TiO2 for various rutile: anatase ratios, Catal. Commun., 6, 705-710
  11. Jongsomjit, B., Wongsalee, T., Praserthdam, P. (2005). Study of cobalt dispersion on titania consisting various rutile: anatase ratios, Mater. Chem. Phys., 92, 572-577
  12. Kordouli, E., Dracopoulos, V., Vaimakis, T., Bourikas, K., Lycourghiotis, A., Kordulis, C. (2015). Comparative study of phase transition and textural changes upon calcination of two commercial titania samples: A pure anatase and a mixed anatase-rutile, J. Solid State Chem., 232, 42-49
  13. Autthanit, C., Jongsomjit, B. (2018). Production of ethylene through ethanol dehydration on SBA-15 catalysts synthesized by sol-gel and one-step hydrothermal methods, J. Oleo Sci., 67, 235-243
  14. Krutpijit, C., Jongsomjit, B. (2016). Catalytic ethanol dehydration over different acid-activated montmorillonite clays, J. Oleo Sci., 65, 347-355
  15. Cecilia, J., García-Sancho, C., Mérida-Robles, J., Santamaría-González, J., Moreno-Tost, R., Maireles-Torres, P. (2015). V and V–P containing Zr-SBA-15 catalysts for dehydration of glycerol to acrolein, Catal. Today., 254, 43-52
  16. Akarmazyan, S.S., Panagiotopoulou, P., Kambolis, A., Papadopoulou, C., Kondarides, D.I. (2014). Methanol dehydration to dimethylether over Al2O3 catalysts, Appl. Catal. B., 145, 136-148
  17. Zhang, X., Wang, R., Yang, X., Zhang, F. (2008). Comparison of four catalysts in the catalytic dehydration of ethanol to ethylene, Microporous Mesoporous Mater., 116, 210-215
  18. Zhan, N., Hu, Y., Li, H., Yu, D., Han, Y., Huang, H. (2010). Lanthanum–phosphorous modified HZSM-5 catalysts in dehydration of ethanol to ethylene: A comparative analysis, Catal. Commun., 11, 633-637
  19. Limlamthong, M., Chitpong, N., Jongsomjit, B. (2019). Influence of Phosphoric Acid Modification on Catalytic Properties of g-c Al2O3 Catalysts for Dehydration of Ethanol to Diethyl Ether, Bull. Chem. React. Eng. Catal., 14, 1-8
  20. Autthanit, C., Praserthdam, P., Jongsomjit B. (2018). Oxidative and non-oxidative dehydrogenation of ethanol to acetaldehyde over different VOx/SBA-15 catalysts, J. Environ. Chem. Eng., 6, 6516-6529
  21. Istadi, I., Anggoro, D.D., Amin, N.A.S., Ling, D.H.W. (2011). Catalyst deactivation simulation through carbon deposition in carbon dioxide reforming over Ni/CaO-Al2O3 catalyst. Bull. Chem. React. Eng. Catal., 6(2), 129-136
  22. Zhang, W., Qi, S., Pantaleo, G., Liotta, L.F. (2019). WO3-V2O5 Active Oxides for NOx SCR by NH3: Preparation Methods, Catalysts’ Composition, and Deactivation Mechanism - A Review, Catalysts, 9, 527-557

Last update:

No citation recorded.

Last update:

No citation recorded.