Tandem Lewis/Brønsted homogeneous acid catalysis: conversion of glucose to 5-hydoxymethylfurfural in an aqueous chromium(iii) chloride and hydrochloric acid solution
- Univ. of Delaware, Newark, DE (United States)
- OLI Systems Inc., Cedar Knolls, NJ (United States)
Here, a kinetic model for the tandem conversion of glucose to 5-hydroxymethylfurfural (HMF) through fructose in aqueous CrCl3–HCl solution was developed by analyzing experimental data. We show that the coupling of Lewis and Brønsted acids in a single pot overcomes equilibrium limitations of the glucose–fructose isomerization leading to high glucose conversions and identify conditions that maximize HMF yield. Adjusting the HCl/CrCl3 concentration has a more pronounced effect on HMF yield at constant glucose conversion than that of temperature or CrCl3 concentration. This is attributed to the interactions between HCl and CrCl3 speciation in solution that leads to HMF yield being maximized at moderate HCl concentrations for each CrCl3 concentration. This volcano-like behavior is accompanied with a change in the rate-limiting step from fructose dehydration to glucose isomerization as the concentration of the Brønsted acid increases. The maximum HMF yield in a single aqueous phase is only modest and appears independent of catalysts’ concentrations as long as they are appropriately balanced. However, it can be further maximized in a biphasic system. Our findings are consistent with recent studies in other tandem reactions catalyzed by different catalysts.
- Research Organization:
- Energy Frontier Research Centers (EFRC), Washington, D.C. (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:
- 1370906
- Journal Information:
- Green Chemistry, Journal Name: Green Chemistry Journal Issue: 10 Vol. 17; ISSN 1463-9262
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cooperative Brønsted-Lewis acid sites created by phosphotungstic acid encapsulated metal–organic frameworks for selective glucose conversion to 5-hydroxymethylfurfural
Alcohol fermentation of sweet potato - 1. Acid hydrolysis and factors involved
Alcohol fermentation of sweet potato. 1. Acid hydrolysis and factors involved
Journal Article
·
Fri Nov 12 00:00:00 UTC 2021
· Fuel
·
OSTI ID:1958749
Alcohol fermentation of sweet potato - 1. Acid hydrolysis and factors involved
Journal Article
·
Wed Apr 01 04:00:00 UTC 1981
· Biotechnol. Bioeng.; (United States)
·
OSTI ID:5167434
Alcohol fermentation of sweet potato. 1. Acid hydrolysis and factors involved
Journal Article
·
Wed Apr 01 04:00:00 UTC 1981
· Biotechnol. Bioeng.; (United States)
·
OSTI ID:5392692
Related Subjects
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)
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)