Fast microflow kinetics studies of glucose conversion to hydroxymethyl furfural
| Author(s) | Chen, Tai-Ying | |
| Date Accessioned | 2021-11-11T13:12:52Z | |
| Date Available | 2021-11-11T13:12:52Z | |
| Publication Date | 2021 | |
| SWORD Update | 2021-08-11T16:05:31Z | |
| Abstract | 5-hydroxymethyl furfural (HMF) is an important platform chemical because it can be upgraded to various drop-in and performance-advantaged products. The cascade reaction of HMF production from glucose over a Lewis acid (CrCl3) and a Brønsted acid (HCl) catalyst in aqueous media is investigated in a microreactor at short residence times and high temperatures. The catalyst reactivity increases sharply at short residence times and then drops at long times. This indicates that the catalyst treatment plays a vital role in getting optimal reactivity, and recording the catalyst history is necessary. We develop a kinetic model to describe the catalyst speciation and the Lewis and Brønsted acid-catalyzed reaction kinetics using a hierarchical approach. The model is in good agreement with experiments. We demonstrate the benefits of tandem Lewis-external added Brønsted acid catalysis in processing time, productivity, and catalyst stability. We apply this model to optimize the HMF yield and obtain ~36% yield at 200 °C in 7 min and report the highest productivity of >10% yield/min, demonstrating the opportunity of reaching high productivity at short residence times. | en_US |
| Advisor | Vlachos, Dionisios G. | |
| Degree | M.Ch.E. | |
| Department | University of Delaware, Department of Chemical and Biomolecular Engineering | |
| Unique Identifier | 1285067344 | |
| URL | https://udspace.udel.edu/handle/19716/29363 | |
| Language | en | |
| Publisher | University of Delaware | en_US |
| URI | https://login.udel.idm.oclc.org/login?url=https://www.proquest.com/dissertations-theses/fast-microflow-kinetics-studies-glucose/docview/2572577028/se-2?accountid=10457 | |
| Keywords | Microflow kinetics | en_US |
| Keywords | Glucose conversion | en_US |
| Keywords | Hydroxymethyl furfural | en_US |
| Title | Fast microflow kinetics studies of glucose conversion to hydroxymethyl furfural | en_US |
| Type | Thesis | en_US |