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Ignition delay times of NH3/DME blends at high pressure and low DME fraction: RCM experiments and simulations

Description: Authors of the article describe how autoignition delay times of ammonia/dimethyl ether (NH3/DME) mixtures were measured in a rapid compression machine with DME fractions of 0, 2 and 5 and 100% in the fuel. Analysis of the mechanism indicates that this 'early DME oxidation' generates reactive species that initiate the oxidation of ammonia, which in turn begins heat release that raises the temperature and accelerates the oxidation process towards ignition. This is the accepted manuscript version … more
Date: January 14, 2021
Creator: Dai, Liming; Glarborg, Peter; Gersen, Sander; Marshall, Paul; Mokhov, Anatoli & Levinsky, Howard
Partner: UNT College of Science
open access

Multireference Character for 4D Transition Metal-Containing Molecules

Description: This article proposes new criteria, namely T₁ ≥ 0.045, D₁ ≥ 0.120, and %TAE ≥ 10%, as a gauge for 4d transition metal-containing molecules to predic the possible need to employ multireference (MR) wave function-based methods to describe energetic and spectroscopic properties.
Date: October 14, 2015
Creator: Wang, Jiaqi; Manivasagam, Sivabalan & Wilson, Angela K.
Partner: UNT College of Arts and Sciences
open access

Dioxygen: What Makes This Triplet Diradical Kinetically Persistent?

Description: This article examines experimental heats of formation and enthalpies obtained from G4 calculations to find that the resonance stabilization of the two unpaired electrons in triplet O₂, relative to the unpaired electrons in two hydroxyl radicals, amounts to 100 kcal/mol.
Date: June 14, 2017
Creator: Borden, Weston T.; Hoffmann, Roald; Stuyver, Thijs & Chen, Bo
Partner: UNT College of Science
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