A5025253488- Lignin and Wood Chemistry
- Catalysis for Biomass Conversion
- Mesoporous Materials and Catalysis
- Biochemical and biochemical processes
- Thermochemical Biomass Conversion Processes
- Fermentation and Sensory Analysis
- Fiber-reinforced polymer composites
- Biofuel production and bioconversion
- Catalysis and Hydrodesulfurization Studies
- Advanced Cellulose Research Studies
- Polysaccharides and Plant Cell Walls
- Enzyme-mediated dye degradation
- Adsorption and biosorption for pollutant removal
- Seaweed-derived Bioactive Compounds
- Plant Gene Expression Analysis
- Algal biology and biofuel production
Clemson University
2018-2024
Biorefinery and paper pulping lignins, referred hereto as technical contain condensed C–C interunit linkages. These robust linkages with higher bond dissociation energies are difficult to disrupt under hydrogenolysis conditions, which generally used for cleaving C–O bonds of native lignin in biomass or model linked compounds. Thus, selective cleavage release aromatic monomers high-value applications is a challenge. We report an effective catalytic system cleave such selectively mild...
The sustainable solvent system acetic acid + water was used to simultaneously fractionate, solvate, and clean a softwood Kraft lignin for conversion carbon fibers. By exploiting the novel liquid–liquid equilibrium (LLE) phase behavior exhibited by this pseudoternary system, three fractionated–solvated precursors (FSLPs) of increasing molecular weight (7200, 13 800, 28 600) were obtained via continuous Aqueous Lignin Purification using Hot Acids (ALPHA) process. It is noteworthy that all...
Herein, a series of novel, lignin-based hydrogel composites was fabricated by incorporating ultraclean lignins (UCLs), controlled molecular weight and low dispersity, into poly(vinyl alcohol) (PVA).
Over the past decade, production of biofuels from lignocellulosic biomass has steadily increased to offset use fuels petroleum. To make cost-competitive, however, it is necessary add value “ligno-” components (up 30% by mass) biomass. The properties lignin, in terms molecular weight (MW), chemical functionality, and mineral impurities often vary source biorefinery process, resulting a challenging precursor for product development. Activated carbon (AC) feasible target lignin-rich byproduct...
Kraft lignin was isolated into fractions encompassing a range of molecular weights (MW) using fractionation/purification process. Small angle neutron scattering (SANS) used to determine the absolute MW, structure, and association behavior these in deuterated alkaline solutions. Lignin subunits are elongated, rigid, rod-like structures exist as large aggregates. Significant elongation macromolecular dimension observed with increasing this translating directly higher-performance carbon fibers....
Liquid–liquid equilibrium (LLE) phase compositions and tie lines were measured for the lignin–acetone–water system in region of LLE where aqueous lignin purification with hot agents (ALPHA) process can be practiced. The surrounding one-phase, solid–liquid (SL), SLL, acetone-rich LL regions also identified, mapping out global behavior this system. Solvent (on a lignin-free basis) coexisting solvent-rich lignin-rich liquid phases are quite similar one-phase extends to ∼50/50 wt/wt...
Over the past decade, production of biofuels from lignocellulosic biomass has steadily increased to offset use fuels petroleum. To make cost-competitive, however, it is necessary add value "ligno-" components (up 30% by mass) biomass. The properties lignin, in terms molecular weight (MW), chemical functionality, and mineral impurities often vary source biorefinery process, resulting a challenging precursor for product development. Activated carbon (AC) feasible target lignin-rich byproduct...