Adipic Acid Production via Metal-Free Selective Hydrogenolysis of Biomass-Derived Tetrahydrofuran-2,5-Dicarboxylic Acid
- Univ. of Delaware, Newark, DE (United States). Catalysis Center for Energy Innovation, Dept. of Chemical & Biomolecular Engineering
Biomass-derived furans offer sustainable routes to adipic acid (AA), a key chemical in Nylon-6,6 synthesis. In this work, we show that tetrahydrofuran-2,5-dicarboxylic acid (THFDCA) is a viable precursor for AA production, achieving up to 89% yield in a metal-free system containing HI and molecular H2 in a propionic acid solvent at 160 °C. Reactivity studies demonstrate that the interplay between HI, H2, and the solvent is essential for effective THFDCA ring opening. By measuring the reaction orders of HI and molecular H2 and calculating an acid–base equilibrium constant in a nonaqueous solvent, we show that HI plays a multifaceted role in the reaction by acting both as a proton source and an iodide source to selectively cleave C–O bonds without overhydrogenation of carboxylic acid groups. Using reactivity studies, kinetic measurements, and first-principles computational insights, we demonstrate that metal-free activation of molecular H2 plays a key role in the reaction, following HI-mediated cleavage of the etheric C–O bond in THFDCA.
- 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) (SC-22)
- Grant/Contract Number:
- SC0001004
- OSTI ID:
- 1469939
- Journal Information:
- ACS Catalysis, Journal Name: ACS Catalysis Journal Issue: 10 Vol. 7; ISSN 2155-5435
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
09 BIOMASS FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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)