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
Abstract 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 Zn II 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 Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0001004
- OSTI ID:
- 1470089
- Alternate ID(s):
- OSTI ID: 1412033
- Journal Information:
- ChemCatChem, Vol. 9, Issue 23; Related Information: CCEI partners with the University of Delaware (lead); Brookhaven National Laboratory; California Institute of Technology; Columbia University; University of Delaware; Lehigh University; University of Massachusetts, Amherst; Massachusetts Institute of Technology; University of Minnesota; Pacific Northwest National Laboratory; University of Pennsylvania; Princeton University; Rutgers University; ISSN 1867-3880
- Publisher:
- ChemPubSoc EuropeCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Formaldehyde–isobutene Prins condensation over MFI-type zeolites
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journal | January 2018 |
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