Engineering topics

Vardon, Derek Richard

Publications and source records attributed to Vardon, Derek Richard.

4 records

DOE OSTI2023

Catalysts and methods for the conversion of carbonaceous materials to liquid fuels

The present disclosure relates to a composition that includes copper (Cu), aluminum (Al), oxygen, and an element (M) that includes at least one of magnesium, cerium, and/or a transition metal, where the copper and the element are present at a first molar ratio relative to the aluminum between about 0.1:1 and about 30:1 ((Cu+M):Al), and the copper and the element are present at a second molar ratio between about 0.1:4 and about 20:1 (Cu:M).

Vardon, Derek Richard↗

DOE OSTI2023

Bioderived fuels and methods of making the same

The present disclosure relates to a composition that includes a first oxide having a phosphate, a ratio of Brønsted acid sites to Lewis acid sites between 0.05 and 1.00, and a total acidity between 50 μmol/g and 300 μmol/g, where the phosphate is at least one of a functional group covalently bonded to the first oxide and/or an anion ionically bonded to the first oxide.

Hafenstine, Glenn Richard↗

DOE OSTI2022

Fuels and methods of making the same

The present disclosure relates to a method that includes a first treating of a first mixture that includes a carboxylic acid having between 2 and 12 carbon atoms, inclusively, to form a second mixture that includes a ketone having between 2 and 25 carbon atoms, inclusively, and a second treating of at least a first portion of the second mixture to form a first product that includes a paraffin having 8 or more carbon atoms.

09 BIOMASS FUELS↗

DOE OSTI2022

Conversion of biomass to useful intermediates

An aspect of the present disclosure is a microbial cell that includes a genetic modification resulting in the expression of a deficient form of an endogenous dioxygenase, and a gene encoding an exogenous dioxygenase and a promoter sequence, where the endogenous dioxygenase includes PcaH and PcaG, the exogenous dioxygenase includes LigA and LigB, the microbial cell is capable of growth utilizing at least one of a cellulose decomposition molecule or a lignin decomposition molecule, and the microbial cell is capable of producing 2-hydroxy-2H-pyran-4,6-dicarboxylic acid.

Beckham, Gregg Tyler↗