Zeolite-Catalyzed Formaldehyde-Propylene Prins Condensation
- Delaware State Univ., Dover, DE (United States). Catalysis Center for Energy Innovation
- Delaware State Univ., Dover, DE (United States). Catalysis Center for Energy Innovation, and Dept. of Chemical and Biomolecular Engineering
Prins condensation of formaldehyde with propylene to form 3-buten-1-ol is investigated using microporous solid acid catalysts. Zn/H-beta shows high conversion but leads to a broad product distribution composed primarily of pyrans. Mechanistic studies revealed that 3-buten-1-ol reacts via Prins cyclization or dehydrate to 1,3-butadiene that further reacts with formaldehyde via a hetero-Diels–Alder reaction. These secondary reactions are suppressed over ZSM-5 catalysts: 3-buten-1-ol is the predominant product over H-ZSM-5 zeolite under all conditions investigated. 3-Buten-1-ol selectivity of up to 75 % is achieved. In a second step 3-buten-1-ol dehydrates at temperatures as low as 423 K, forming 1,3-butadiene. Although Brønsted acid sites are the primary catalytic sites, ion exchange of ZnII increases the overall rate and 3-buten-1-ol selectivity. H-ZSM-5 showed significant differences in reactivity and selectivity as a function of the Si/Al ratio; optimal catalytic properties were observed within Si/Al=40–140.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Catalysis Center for Energy Innovation (CCEI)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- SC0001004
- OSTI ID:
- 1470089
- Alternate ID(s):
- OSTI ID: 1412033
- Journal Information:
- ChemCatChem, Journal Name: ChemCatChem Journal Issue: 23 Vol. 9; ISSN 1867-3880
- Publisher:
- ChemPubSoc EuropeCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Formaldehyde–isobutene Prins condensation over MFI-type zeolites
|
journal | January 2018 |
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bio-inspired
biofuels (including algae and biomass)
catalysis (heterogeneous)
catalysis (homogeneous)
hydrogen and fuel cells
materials and chemistry by design
synthesis (novel materials)
synthesis (scalable processing)
synthesis (self-assembly)
bio-inspired
biofuels (including algae and biomass)
catalysis (heterogeneous)
catalysis (homogeneous)
hydrogen and fuel cells
materials and chemistry by design
synthesis (novel materials)
synthesis (scalable processing)
synthesis (self-assembly)