Vanadium and nickel distributions in Pentane, In-between C5-C7 Asphaltenes, and heptane asphaltenes of heavy crude oils

Microwave-assisted Petroporphyrin Release from Asphaltene Aggregates in Polar Solvents

(2020) Shiguang Fan et al.   ENERGY & FUELS

Probing Aggregation Tendencies in Asphaltenes by Gel Permeation Chromatography. Part 2: Online Detection by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry and Inductively Coupled Plasma Mass Spectrometry

(2020) Jonathan Putman et al.   ENERGY & FUELS

Compositional Trends for Total Vanadium Content and Vanadyl Porphyrins in Gel Permeation Chromatography Fractions Reveal Correlations between Asphaltene Aggregation and Ion Production Efficiency in Atmospheric Pressure Photoionization

(2020) Martha L. Chacón-Patiño et al.   ENERGY & FUELS

Elucidating the Geometric Substitution of Petroporphyrins by Spectroscopic Analysis and Atomic Force Microscopy Molecular Imaging

(2019) Yunlong Zhang et al.   ENERGY & FUELS

High Purity Vanadyl Petroporphyrins: Their Aggregation and Effect on Aggregation of Asphaltenes

(2019) B McKay Rytting et al.   ENERGY & FUELS

Elemental Analysis of Asphaltenes Using Simultaneous Laser-Induced Breakdown Spectroscopy (LIBS)–Laser Ablation Inductively Coupled Plasma Optical Emission Spectrometry (LA-ICP-OES)

(2018) Dayana Oropeza et al.   APPLIED SPECTROSCOPY

Evidence of naturally-occurring vanadyl porphyrins containing multiple S and O atoms

(2018) Kuangnan Qian et al.   FUEL

Advances in Asphaltene Petroleomics. Part 1: Asphaltenes Are Composed of Abundant Island and Archipelago Structural Motifs

(2017) Martha L. Chacón-Patiño et al.   ENERGY & FUELS

Effect of precipitation time and solvent power on asphaltene characteristics

(2017) Estrella Rogel et al.   FUEL

On Exclusivity of Vanadium and Nickel Porphyrins in Crude Oil

(2016) Edward Furimsky   ENERGY & FUELS

Exploring Occluded Compounds and Their Interactions with Asphaltene Networks Using High-Resolution Mass Spectrometry

(2016) Martha L. Chacón-Patiño et al.   ENERGY & FUELS

Features of the composition of vanadyl porphyrins in the crude extract of asphaltenes of heavy oil with high vanadium content

(2016) M. R. Yakubov et al.   PETROLEUM SCIENCE AND TECHNOLOGY

Effect of Precipitating Conditions on Asphaltene Properties and Aggregation

(2015) Lante Carbognani Ortega et al.   ENERGY & FUELS

Characterization of Asphaltene Fractions: Distribution, Chemical Characteristics, and Solubility Behavior

(2015) Estrella Rogel et al.   ENERGY & FUELS

Unprecedented Ultrahigh Resolution FT-ICR Mass Spectrometry and Parts-Per-Billion Mass Accuracy Enable Direct Characterization of Nickel and Vanadyl Porphyrins in Petroleum from Natural Seeps

(2014) Amy M. McKenna et al.   ENERGY & FUELS

Separation and Characterization of Vanadyl Porphyrins in Venezuela Orinoco Heavy Crude Oil

(2013) Xu Zhao et al.   ENERGY & FUELS

Monitoring the behaviour and fate of nickel and vanadium complexes during vacuum residue hydrotreatment and fraction separation

(2013) Jérémie Barbier et al.   FUEL PROCESSING TECHNOLOGY

Determination of volatile nickel and vanadinum species in crude oil and crude oil fractions by gas chromatography coupled to inductively coupled plasma mass spectrometry

(2011) Jenny Ellis et al.   JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY

Chemistry and Association of Vanadium Compounds in Heavy Oil and Bitumen, and Implications for Their Selective Removal†

(2010) Greg P. Dechaine et al.   ENERGY & FUELS

Enrichment, Resolution, and Identification of Nickel Porphyrins in Petroleum Asphaltene by Cyclograph Separation and Atmospheric Pressure Photoionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

(2009) Kuangnan Qian et al.   ANALYTICAL CHEMISTRY

Analysis of Asphaltenes and Asphaltene Model Compounds by Laser-Induced Acoustic Desorption/Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

(2009) David S. Pinkston et al.   ENERGY & FUELS

Identification of Vanadyl Porphyrins in a Heavy Crude Oil and Raw Asphaltene by Atmospheric Pressure Photoionization Fourier Transform Ion Cyclotron Resonance (FT-ICR) Mass Spectrometry

(2009) Amy M. McKenna et al.   ENERGY & FUELS