As countries pledge their commitment to a net-zero future, much of the previously forgotten climate change research were revitalized by efforts from both governmental and private sectors. In particular, the utilization of lignocellulosic materials saw a special spotlight in research interest for its abundance and its carbon removal capability during photosynthesis. The initial effort in mimicking enzymatic active sites of β-glucosidase will be explored. The crystalline covalent organic frameworks (COFs) allowed for the introduction of a variety of noncovalent interactions, which enhanced the adsorption and the catalytic activity against cellobiose and its glycosidic bonds. The physical processes associated with this reaction, such as the kinetics, equilibrium, and activation energies, will be closely examined and compared with existing standard materials and comparable advanced catalysts. In addition, several variants of COFs were synthesized to explore the effect of various noncovalent interactions with cellobiose. A radical-bearing COF was synthesized and characterized. The stability of this radical was examined by electron paramagnetic resonance spectroscopy (EPR) and its oxidative capability tested with model lignin and alcoholic compounds. The reaction products are monitored and identified using gas chromatography-mass spectroscopy (GC-MS). An oxidative coupling of phenol was explored, and its initial results are presented in chapter 5.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc2137620 |
| Date | 05 1900 |
| Creators | Lan, Pui Ching |
| Contributors | Ma, Shengqian, Slaughter, LeGrande M., Wang, Hong, Omary, Mohammad A., Das, Anindita |
| Publisher | University of North Texas |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | Text |
| Rights | Public, Lan, Pui Ching, Copyright, Copyright is held by the author, unless otherwise noted. All rights Reserved. |
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