Selective dehydration of bio-ethanol to ethylene catalyzed by lanthanum-phosphorous-modified HZSM-5: Influence of the fusel
Abstract
Bio-ethanol dehydration to ethylene is an attractive alternative to oil-based ethylene. The influence of fusel, main byproducts in the fermentation process of bio-ethanol production, on the bio-ethanol dehydration should not be ignored. We studied the catalytic dehydration of bio-ethanol to ethylene over parent and modified HZSM-5 at 250°C, with weight hourly space velocity (WHSV) equal to 2.0/h. The influences of a series of fusel, such as isopropanol, isobutanol and isopentanol, on the ethanol dehydration over the catalysts were investigated. The 0.5%La-2%PHZSM-5 catalyst exhibited higher ethanol conversion (100%), ethylene selectivity (99%), and especially enhanced stability (more than 70 h) than the parent and other modified HZSM-5. We demonstrated that the introduction of lanthanum and phosphorous to HZSM-5 could weaken the negative influence of fusel on the formation of ethylene. The physicochemical properties of the catalysts were characterized by ammonia temperature-programmed desorption (NH(3)-TPD), nitrogen adsorption and thermogravimetry (TG)/differential thermogravimetry (DTG)/differential thermal analysis (DTA) (TG/DTG/DTA) techniques. The results indicated that the introduction of lanthanum and phosphorous to HZSM-5 could inhibit the formation of coking during the ethanol dehydration to ethylene in the presence of fusel. The development of an efficient catalyst is one of the key technologies for the industrialization of bio-ethylene.
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Both ethanol and iso-butanol are easily dehydrated in the presence of acid catalysts such as silica-alumina and at moderate temperatures, e.g., 250 °C and 325 °C, respectively.
“Both ethanol and iso-butanol are easily dehydrated in the presence of acid catalysts such as silica-alumina and at moderate temperatures, e.g., 250 °C and 325 °C, respectively [140].”
From Investigation of Biofuel as a Potential Renewable Energy Source (2021) · cites this paper as [140]
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- Authors
- Hu, Y., Zhan, N., Dou, C., Huang, H., Han, Y., Yu, D., & Hu, Y.
- Affiliations
- Nanjing Tech University (CN)
- Corresponding author
- Hu, Yi
- Venue
- Biotechnology Journal
- Publisher
- Wiley
- Published
- 2010-11
- Volume
- 5
- Issue
- 11
- Pages
- 1186-1191
- ISSN
- 1860-6768 (ISSN-L)
- 1860-7314
- OpenAlex
- W2099178222
- Cited by
- 35
- References
- 30
- Citations by year
- 2025: 2 · 2024: 4 · 2022: 6 · 2021: 5 · 2020: 2 · 2019: 2 · 2018: 1 · 2017: 2 · 2016: 4 · 2015: 1 · 2013: 3 · 2012: 1
- FWCI
- 1.37
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Biotechnology Journal (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
- Physical Sciences › Engineering › Biomedical Engineering › Catalysis for Biomass Conversion
- Physical Sciences › Chemical Engineering › Catalysis › Catalysis and Oxidation Reactions
- Keywords
- ethylene production, HZSM-5 zeolite, lanthanum modification, phosphorus modification, isopropanol, isobutanol, isoamyl alcohol, catalyst stability
- MeSH terms
- Ethanol, Alcohols, Pentanols, Butanols, Catalysis, Dehydration, Lanthanum, Phosphorus, 2-Propanol
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