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Aspen Plus ENRTL Model for HS3 Blend, a Novel Solvent for CO2 Capture
(Peer reviewed; Journal article, 2023)Carbon Capture and Storage (CCS) is among the main available options to cut CO2 emissions from the industry and energy production sectors, but the high costs of current CCS technology still limit their large-scale ... -
Asphaltene fractionation based on adsorption onto calcium carbonate: Part 1. Characterization of sub-fractions and QCM-D measurements
(Journal article; Peer reviewed, 2016)A new fractionation procedure was developed based on adsorption of asphaltenes onto calcium carbonate. The fractions obtained were characterized by elemental analysis, Fourier Transform Infrared Spectroscopy (FTIR) and ... -
Asphaltene fractionation based on adsorption onto calcium carbonate: Part 2. Self-association and aggregation properties
(Journal article; Peer reviewed, 2017)The self-association and aggregation properties of asphaltene sub-fractions obtained by adsorption onto CaCO3 (doi:http://dx.doi.org/10.1016/j.colsurfa.2016.02.011) were investigated using a combination of near infrared ... -
Asphaltene fractionation based on adsorption onto calcium carbonate: Part 3. Effect of asphaltenes on wax crystallization
(Journal article; Peer reviewed, 2018)Asphaltenes fractionation procedures were developed and tested in two preceding articles (doi: https://doi.org/10.1016/j.colsurfa.2016.02.011, doi: https://doi.org/10.1016/j.colsurfa.2016.11.035), and asphaltene fractions ... -
Asphaltene Precipitation Models: A Review
(Journal article; Peer reviewed, 2016)Asphaltenes are the heaviest and the most polar fractions of crude oil and are defined as a solubility class (typically soluble in toluene but insoluble in n-alkanes like n-heptane). Precipitation and deposition of asphaltenes ... -
Asphaltenes and Asphaltene model compounds: Adsorption, Desorption and Interfacial Rheology.
(Doctoral thesis at NTNU;2016:71, Doctoral thesis, 2016)There are numerous problems encountered during extraction, production, transportation and refining of crude oil. Most of these problems are typically oil-specific, meaning that they depend upon the source of the oil, and ... -
Asphaltenes subfractions characterization and calculation of their solubility parameter using ESI(-) FT-ICR MS: Part II
(Peer reviewed; Journal article, 2022)Negative ion-mode electrospray (ESI(-)) technique coupled to Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) provides ionization of polar constituents with ultra-high resolution and mass accuracy. ... -
Asphaltenes subfractions extracted from Brazilian vacuum residue: Chemical characterization and stabilization of model water-in-oil (W/O) emulsions
(Journal article, 2018)Asphaltenes were obtained from a Brazilian vacuum residue (VR) by precipitation with different ratios of n-heptane/VR to give three asphaltene subfractions. The behavior of these different subfractions in relation to the ... -
Assessing the Interfacial Activity of Insoluble Asphaltene Layers: Interfacial Rheology versus Interfacial Tension
(Peer reviewed; Journal article, 2020)Asphaltenes have been suggested to play an important role in the remarkable stability of some water-in-crude oil emulsions, although the precise mechanisms by which they act are not yet fully understood. Being one of the ... -
Assessment of a membrane contactor process for pre-combustion CO2 capture by modelling and integrated process simulation
(Journal article; Peer reviewed, 2018)A membrane contactor process for pre-combustion CO2 capture from shifted synthesis gas originated from IGCC power plant is assessed from the technical and economical point of views. The process is designed as pressure swing ... -
Atomic Cu-N-P-C Active Complex with Integrated Oxidation and Chlorination for Improved Ethylene Oxychlorination
(Journal article; Peer reviewed, 2023)Fine constructing the chemical environment of the central metal is vital in developing efficient single-atom catalysts (SACs). Herein, the atomically dispersed Cu on the N-doped carbon is modulated by introducing CuP ... -
Atomic Insights into Robust Pt-PdO Interfacial Site-Boosted Hydrogen Generation
(Peer reviewed; Journal article, 2020)Suppression of catalyst deactivation without compromising activity has been a long-standing yet elusive goal in heterogeneous catalysis. Herein, we report a remarkable achievement of both hydrogen generation activity and ... -
Atomically dispersed Fe-N-P-C complex electrocatalysts for superior oxygen reduction
(Journal article; Peer reviewed, 2019)Development of cost-effective electrocatalysts as an alternative to platinum for oxygen reduction reaction (ORR) is of great significance for boosting the applications of green energy devices such as fuel cells and metal-air ... -
ATR-FTIR Model Development and Verification for Qualitative and Quantitative Analysis in MDEA–H2O–MEG/TEG–CO2 Blends
(Journal article; Peer reviewed, 2019)A Fourier transform infrared (FTIR) spectroscopy method was developed to identify and quantify various components in an amine-based combined acid gas and water removal process. In this work, an attenuated total reflectance ... -
Au nanoparticles deposited on the external surfaces of TS-1: Enhanced stability and activity for direct propylene epoxidation with H2 and O2
(Journal article; Peer reviewed, 2014)Au/TS-1 catalysts prepared by deposition–precipitation method are very promising for direct propylene epoxidation with H2 and O2. However, the catalysts usually suffer from rapid deactivation. In this work, calcined TS-1 ... -
Au-TiO2 catalysts supported on carbon nanostructures for CO removal reactions
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:269, Doctoral thesis, 2008) Awareness of the climatic changes due to emission of CO2 and other greenhouse gases to the atmosphere has made ... -
Au/TS-1 catalyst prepared by deposition–precipitation method for propene epoxidation with H2/O2: Insights into the effects of slurry aging time and Si/Ti molar ratio
(Journal article; Peer reviewed, 2015)Au/TS-1 catalyst prepared by deposition–precipitation method is efficient for propene epoxidation with H2/O2, and its performance is significantly affected by the preparation parameters and the properties of support. In ... -
Au/TS‐1 catalyst for propene epoxidation with H2/O2: A novel strategy to enhance stability by tuning charging sequence
(Journal article; Peer reviewed, 2016)For propene epoxidation with H2 and O2, the catalytic performance of Au/TS‐1 catalyst is extremely sensitive to preparation parameters of deposition‐precipitation (DP) method. In this work, effect of charging sequence in ... -
Au/uncalcined TS-1 catalysts for direct propene epoxidation with H2 and O2: Effects of Si/Ti molar ratio and Au loading
(Journal article; Peer reviewed, 2015)For direct propene epoxidation with H2/O2, TS-1 with blocked micropores (TS-1-B) is recognized as an attractive support for Au catalysts with enhanced stability and activity by suppressing the deactivation caused by micropore ... -
Augmented Microfluidic Dye Sensitized Solar Cells - Longevity and Performance Efficiency Investigation In Novel Architectures Through Synergizing Materials and Microfluidics
(Master thesis, 2017)Dye-sensitized solar cells (DSSCs) have garnered increasing attention from scientists and engineers due to the potential of low cost and flexibility in terms of choice of constituent materials, along with increasing emphasis ...