Dehydration of 1,3-butanediol to butadiene over medium-pore zeolites: Another example of reaction intermediate shape selectivity
SCIE
SCOPUS
- Title
- Dehydration of 1,3-butanediol to butadiene over medium-pore zeolites: Another example of reaction intermediate shape selectivity
- Authors
- Lee, Jeong Hwan; Hong, Suk Bong
- Date Issued
- 2021-01
- Publisher
- ELSEVIER
- Abstract
- Here we compare the catalytic properties of the proton form of 11 medium-pore zeolites, with different framework topologies and/or compositions for the dehydration of biomass-derived 1,3-butanediol at 300 degrees C under excess water conditions (H2O/1,3-butanediol = 45). It was found that high-silica H-ferrierite (Si/Al = 130) with intersecting 10- and 8-ring channels exhibits the highest butadiene yield, together with the best durability, among the zeolites tested. Due to its highly inactive nature, however, 3-buten-1-ol, one of the butenol reaction intermediates in 1,3-butanediol dehydration, also remained a major by-product. IR spectroscopy with adsorbed 3-buten-1-ol shows that intramolecularly hydrogen-bonded 3-buten-1-ol exists predominantly in H-ZSM-5 with two intersecting 10-ring channels, while the one with no intramolecular hydrogen bonding is another species found not only in H-ferrierite but also in the one-dimensional 10-ring zeolite H-ZSM-22. By combining both experimental and theoretical results, we conclude that 1,3-butanediol dehydration over medium-pore zeolites may constitute another example of reaction intermediate shape selectivity.
- Keywords
- VAPOR-PHASE DEHYDRATION; CATALYTIC-PROPERTIES; ETHYLBENZENE DISPROPORTIONATION; CONFORMATIONAL COMPOSITION; SKELETAL ISOMERIZATION; UNSATURATED ALCOHOLS; CRACKING; FRAMEWORK; OLEFINS; 3-BUTEN-1-OL
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/104926
- DOI
- 10.1016/j.apcatb.2020.119446
- ISSN
- 0926-3373
- Article Type
- Article
- Citation
- APPLIED CATALYSIS B-ENVIRONMENTAL, vol. 280, 2021-01
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- There are no files associated with this item.
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