Engineering topics
Mamun, Osman
Publications and source records attributed to Mamun, Osman.
Understanding the influence of solvents on the Pt-catalyzed hydrodeoxygenation of guaiacol
Bio-oil derived from fast pyrolysis of lignocellulosic biomass needs to be deoxygenated to become a substitute for petroleum fuels. Here, we study the hydrodeoxygenation mechanism of guaiacol, a bio-oil model compound derived from the lignin fraction of biomass, on Pt(1 1 1) terrace sites in the presence of water, diethyl ether, 1-butanol, and n-hexane as solvent. Using first-principles periodic density functional theory (DFT) calculations and mean-field microkinetic reactor modeling, a detailed reaction mechanism is investigated targeting various products such as catechol, phenol, anisole, benzene, cyclohexanone, and cyclohexanol. Solvent phase DFT outcomes are mostly similar to that of the vapor phase; however, microkinetic modeling results suggest that rate controlling species and transition states differ somewhat in the various reaction environments. Catechol was found to be the major aromatic product across all reaction environments. Over Pt(1 1 1), unsaturated monooxygenate production from catechol is unlikely.
Creation of the XMAT Database & Leveraging Data Analytics
US-UK Energy Research Collaboration Workshop, Pittsburgh, PA, April 19-20, 2023
Unsupervised Techniques for Outlier Identification in Alloy Datasets
TMS 2023 Annual Meeting & Exhibition, San Diego, CA, March 19-23, 2023