Search Results - "Hoepfner, Michael P"

Multiscale Scattering Investigations of Asphaltene Cluster Breakup, Nanoaggregate Dissociation, and Molecular Ordering by Hoepfner, Michael P, Fogler, H. Scott

“…Small-angle X-ray and neutron scattering (SAXS/SANS) by asphaltenes in various solvents (toluene, tetrahydrofuran, and 1-methylnaphthalene) at dilute…”
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Structure of Asphaltenes during Precipitation Investigated by Ultra-Small-Angle X‑ray Scattering by Yang, Yuan, Chaisoontornyotin, Wattana, Hoepfner, Michael P

“…Time-resolved size and structure measurements of asphaltenes while in the process of precipitating were monitored for the first time using ultra-small-angle…”
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Effect of Confinement on the Density and Diffusivity of Organic Molecules in Single-Digit Nanopores Relative to Bulk Fluid Behavior by Agrawal, Siddharth, Elmehlawy, Mahmoud, Hoepfner, Michael P

“…Prediction of fluid properties in microporous and mesoporous confinement is non-trivial due to distinct influences from pore surface functionality and shape…”
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Combined Asphaltene Aggregation and Deposition Investigation by Chaisoontornyotin, Wattana, Haji-Akbari, Nasim, Fogler, H. Scott, Hoepfner, Michael P

“…This study discusses experimental and modeling results of asphaltene aggregation and deposition using various n-alkanes as precipitants to destabilize…”
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Predicting Asphaltene Aggregate Structure from Molecular Dynamics Simulation: Comparison to Neutron Total Scattering Data by Headen, Thomas F, Hoepfner, Michael P

“…Molecular dynamics (MD) simulation is quickly growing in popularity as a technique for understanding asphaltene aggregate structure and dynamics. However,…”
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A Fundamental Study of Asphaltene Deposition by Hoepfner, Michael P, Limsakoune, Vipawee, Chuenmeechao, Varun, Maqbool, Tabish, Fogler, H. Scott

“…Asphaltenes are a solubility class of petroleum crude oil that can destabilize and deposit in both upstream and downstream processes. In this study, asphaltene…”
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Solvent Effects on the Structure of Petroleum Asphaltenes by Yang, Yuan, Headen, Thomas F, Zhang, Jingzhou, Hoepfner, Michael P

“…Neutron total scattering was employed to study the impact of a solvent on the behavior of asphaltenes by comparing structural interpretations of solid phase…”
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Transferable Force Fields from Experimental Scattering Data with Machine Learning Assisted Structure Refinement by Shanks, Brennon L., Potoff, Jeffrey J., Hoepfner, Michael P.

“…Deriving transferable pair potentials from experimental neutron and X-ray scattering measurements has been a longstanding challenge in condensed matter…”
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19th International Conference on Petroleum Phase Behavior and Fouling by Hoepfner, Michael P, Deo, Milind

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Modeling the Aggregation of Asphaltene Nanoaggregates in Crude Oil−Precipitant Systems by Maqbool, Tabish, Raha, Sasanka, Hoepfner, Michael P, Fogler, H. Scott

“…This study discusses the development of a generalized geometric population balance model for simulating the growth of asphaltene aggregates from the nanometer…”
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Plasmonic Photocatalytic Enhancement of L‑Cysteine Self-Assembled Gold Nanoparticle Clusters for Fenton Reaction Catalysis by Agrawal, Siddharth, Mysko, Ryan A, Nigra, Michael M, Mohanty, Swomitra K, Hoepfner, Michael P

“…Plasmon-enhanced photocatalysis has the potential to reduce activation energies and decrease temperature requirements, which increases catalyst stability and…”
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Rapid Heterogeneous Asphaltene Precipitation with Dispersed Solids by Chaisoontornyotin, Wattana, Zhang, Jingzhou, Ng, Samson, Hoepfner, Michael P

“…Inorganic solids are often present in real heavy oil systems, but are typically absent in asphaltene laboratory studies. For the first time, we investigate the…”
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Accelerated Bayesian Inference for Molecular Simulations using Local Gaussian Process Surrogate Models by Shanks, Brennon L., Sullivan, Harry W., Shazed, Abdur R., Hoepfner, Michael P.

“…While Bayesian inference is the gold standard for uncertainty quantification and propagation, its use within physical chemistry encounters formidable…”
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A Unified Model for Aggregation of Asphaltenes by Haji-Akbari, Nasim, Masirisuk, Pennapa, Hoepfner, Michael P, Fogler, H. Scott

“…Asphaltenes are the heaviest and most polar fraction of crude oil. They can precipitate at any point of oil production or transportation as a result of changes…”
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Reversibility of Asphaltene Precipitation Using Temperature-Induced Aggregation by Chaisoontornyotin, Wattana, Bingham, Austin W, Hoepfner, Michael P

“…In this work, kinetic asphaltene precipitation was investigated using temperature fluctuations. Asphaltene precipitation was previously identified as a fully…”
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Molecular polydispersity improves prediction of asphaltene aggregation by Javanbakht, Gina, Sedghi, Mohammad, Welch, William R.W., Goual, Lamia, Hoepfner, Michael P.

“…Asphaltene flocculation and deposition from petroleum fluids may cause severe formation damage and flow assurance challenges. Flocculation occurs when…”
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Effect of Chemical Inhibitors on Asphaltene Precipitation and Morphology Using Ultra-Small-Angle X‑ray Scattering by Ismail, Manaf, Yang, Yuan, Chaisoontornyotin, Wattana, Ovalles, Cesar, Rogel, Estrella, Moir, Michael E, Hoepfner, Michael P

“…This paper presents time-resolved ultra-small-angle X-ray scattering (USAXS) results of the effect of chemical inhibitors, dodecylphenol (DDPh) and nonylphenol…”
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The Fractal Aggregation of Asphaltenes by Hoepfner, Michael P, Vilas Bôas Fávero, Cláudio, Haji-Akbari, Nasim, Fogler, H. Scott

“…This paper discusses time-resolved small-angle neutron scattering results that were used to investigate asphaltene structure and stability with and without a…”
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Describing temperature increases in plasmon-resonant nanoparticle systems by Hoepfner, Michael P., Roper, D. Keith

“…Plasmon-resonant nanoparticles are being integrated into a variety of actuators, sensors and calorimeters due to their extraordinary optical capabilities. We…”
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Physicochemical characterization of short and long-term aged asphalt mixtures for low-temperature performance by Mohammad Asib, Abu Sufian, Rahman, Rizwanur, Romero, Pedro, Hoepfner, Michael P., Mamun, Abdullahal

“…•Rheological changes in 36 different asphalt mixtures due to variable RAP content and aging period.•Fourier-Transform Infrared Spectroscopy (FT-IR) of…”
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