Presentation Title

Oxidative Cleavage Lignin Using Vanadium Metal Complex

Presenter Information

Tristhan TranFollow

Faculty Mentor

Alex John

Start Date

23-11-2019 8:45 AM

End Date

23-11-2019 9:30 AM

Location

240

Session

poster 2

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

Fossil fuels are the most important resource in the US when compared to types of renewable resources such as biomass, solar, or wind energy. The consumption of energy derived from fossil fuels came to approximately 78 quadrillion British thermal units in 2017. However, everything has its limitation, and fossil fuel is not an exception. Therefore, the development of new resources to replace petroleum-based fuels is becoming urgent and necessary because of climate change, fossil fuel limitation, and environmental issues. One of the best renewable resources in nature is biomass. Among several components of plants, lignin is one of the most common. It is a complex organic polymer and contains a huge amount of several different aromatics connected together by b-O-4 linkages. Therefore, breaking the b-O-4 linkage will break down the lignin into simpler structures containing functional groups such as aromatics, esters, aldehydes, ethers, carboxylates. Until now, Vanadium, Molybdenum, Cobalt, Manganese, and Copper complexes have been shown to catalyze oxidative cleavage of the b-O-4 linkage. The project that I will work on is lignin oxidative cleavage using Vanadium complexes as catalysts. The vanadium catalyst complex is synthesized in the lab and it is the combination of vanadium (IV) oxide and an organic ligand. Various ligands composed of bulky, aromatic functional groups backbone with substituents are investigated for the changes in reaction specificity due to the various substituents on the aromatic rings in the oxidative cleavage of the model lignin compound. The ligands and proceeding organometallic complexes are synthesized as part of the project. When the complex had been synthesized, it reacted with b-O-4 lignin model compound to find out what functional products have been made and the selectivity of each different complexes. Data is analyzed using NMR and GC-MS.

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Nov 23rd, 8:45 AM Nov 23rd, 9:30 AM

Oxidative Cleavage Lignin Using Vanadium Metal Complex

240

Fossil fuels are the most important resource in the US when compared to types of renewable resources such as biomass, solar, or wind energy. The consumption of energy derived from fossil fuels came to approximately 78 quadrillion British thermal units in 2017. However, everything has its limitation, and fossil fuel is not an exception. Therefore, the development of new resources to replace petroleum-based fuels is becoming urgent and necessary because of climate change, fossil fuel limitation, and environmental issues. One of the best renewable resources in nature is biomass. Among several components of plants, lignin is one of the most common. It is a complex organic polymer and contains a huge amount of several different aromatics connected together by b-O-4 linkages. Therefore, breaking the b-O-4 linkage will break down the lignin into simpler structures containing functional groups such as aromatics, esters, aldehydes, ethers, carboxylates. Until now, Vanadium, Molybdenum, Cobalt, Manganese, and Copper complexes have been shown to catalyze oxidative cleavage of the b-O-4 linkage. The project that I will work on is lignin oxidative cleavage using Vanadium complexes as catalysts. The vanadium catalyst complex is synthesized in the lab and it is the combination of vanadium (IV) oxide and an organic ligand. Various ligands composed of bulky, aromatic functional groups backbone with substituents are investigated for the changes in reaction specificity due to the various substituents on the aromatic rings in the oxidative cleavage of the model lignin compound. The ligands and proceeding organometallic complexes are synthesized as part of the project. When the complex had been synthesized, it reacted with b-O-4 lignin model compound to find out what functional products have been made and the selectivity of each different complexes. Data is analyzed using NMR and GC-MS.