ExxonMobil (United States)

Modeling atmospheric dispersion of ammonia over water and implications for in-water fate and trajectory

Ammonia is increasingly being considered as an alternative to fuel oils for powering vessels and as a carrier for hydrogen. A deeper understanding of the environmental and human health risks of unplanned ammonia releases will further inform this promising contribution to efforts...

Lightning Source of Nitrogen Oxides (NO x ) Inferred From Geostationary Satellites: Global Implications for Oxidant Chemistry

Abstract Lightning is a major source of nitrogen oxide radicals (NO x ≡ NO + NO 2 ), but large uncertainties in NO x yields per flash hinder accurate quantification of emissions and impacts on oxidant chemistry. We use 1 year of concurrent geostationary satellite observations of...

Large-Scale Atomistic Modeling of Bio-Oils Informed by Multimodal Characterization Data and Molecular Dynamics

Abstract Understanding the molecular structure of bio-oil is essential for improving upgrading strategies, predicting physicochemical properties, and designing efficient production pathways. This work introduces an integrated experimental-analytical-modeling framework that transl...

An exact mathematical calculation of the relaxation time spectrum of polymeric materials from the dynamic modulus using Mellin transforms

A molecular-level understanding of sub-Tg relaxation processes in industrial resins is of uttermost importance for real-world applications. These processes are characterized by the distribution of relaxation times depicted by the relaxation time spectrum usually computed numerica...