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Research Output 1994 2020

Article
37 Citations (Scopus)

3D characterization of coal strains induced by compression, carbon dioxide sorption, and desorption at in-situ stress conditions

Pone, J. D. N., Halleck, P. M. & Mathews, J. P., Jun 1 2010, In : International Journal of Coal Geology. 82, 3-4, p. 262-268 7 p.

Research output: Contribution to journalArticle

in situ stress
Sorption
Desorption
desorption
Carbon dioxide
63 Citations (Scopus)

A comparative evaluation of coal specific surface area by CO2 and N2 adsorption and its influence on CH4 adsorption capacity at different pore sizes

Zhao, J., Xu, H., Tang, D., Mathews, J. P., Li, S. & Tao, S., Nov 1 2016, In : Fuel. 183, p. 420-431 12 p.

Research output: Contribution to journalArticle

Coal
Specific surface area
Pore size
Adsorption
Gas adsorption
Pore size
Sodium
Coal
Chemical properties
Molecular dynamics
17 Citations (Scopus)

Activated carbon efficient atomistic model construction that depicts experimentally-determined characteristics

Huang, Y., Cannon, F. S., Watson, J. K., Reznik, B. & Mathews, J. P., Mar 1 2015, In : Carbon. 83, p. 1-14 14 p.

Research output: Contribution to journalArticle

Activated carbon
Pore size
Microporosity
Graphite
Coal
69 Citations (Scopus)

A molecular model for Illinois No. 6 Argonne Premium coal: Moving toward capturing the continuum structure

Castro-Marcano, F., Lobodin, V. V., Rodgers, R. P., McKenna, A. M., Marshall, A. G. & Mathews, J. P., May 1 2012, In : Fuel. 95, p. 35-49 15 p.

Research output: Contribution to journalArticle

Coal
Mass spectrometry
Ionization
Desorption
Pyridine
23 Citations (Scopus)

A novel fluidized bed drying and density segregation process for upgrading low-rank coals

Sarunac, N., Levy, E. K., Ness, M., Bullinger, C. W., Mathews, J. P. & Halleck, P. M., Nov 1 2009, In : International Journal of Coal Preparation and Utilization. 29, 6, p. 317-332 16 p.

Research output: Contribution to journalArticle

coal rank
Coal
Fluidized beds
Drying
coal
29 Citations (Scopus)

A review of microwave coal processing

Binner, E., Lester, E., Kingman, S., Dodds, C., Robinson, J., Wu, T., Wardle, P. & Mathews, J. P., Jan 1 2014, In : Journal of Microwave Power and Electromagnetic Energy. 48, 1, p. 35-60 26 p.

Research output: Contribution to journalArticle

Coal
coal
Microwaves
microwaves
Processing
39 Citations (Scopus)

A review of the correlations of coal properties with elemental composition

Mathews, J. P., Krishnamoorthy, V., Louw, E., Tchapda, A. H. N., Castro-Marcano, F., Karri, V., Alexis, D. A. & Mitchell, G. D., Jan 1 2014, In : Fuel processing technology. 121, p. 104-113 10 p.

Research output: Contribution to journalArticle

Coal
Chemical analysis
Calorific value
Helium
Sampling
5 Citations (Scopus)

Atomistic modelling insight into the structure of lignite-based activated carbon and benzene sorption behavior

Huang, Y., Cannon, F. S., Guo, J., Watson, J. K. & Mathews, J. P., Jan 1 2016, In : RSC Advances. 6, 61, p. 56623-56637 15 p.

Research output: Contribution to journalArticle

Coal
Lignite
Benzene
Activated carbon
Sorption
10 Citations (Scopus)

Atomistic simulation of coal char isothermal oxy-fuel combustion: Char reactivity and behavior

Xin, H., Wang, C., Louw, E., Wang, D. & Mathews, J. P., Oct 15 2016, In : Fuel. 182, p. 935-943 9 p.

Research output: Contribution to journalArticle

Coal
Porosity
Graphite
Atoms
Carbon
1 Citation (Scopus)

Atomistic Simulation of Coal Char Oxy-Fuel Combustion: Quantifying the Influences of CO2 to Char Reactivity

Du, Y., Wang, C., Xin, H., Che, D. & Mathews, J. P., Oct 17 2019, In : Energy and Fuels. 33, 10, p. 10228-10236 9 p.

Research output: Contribution to journalArticle

Coal
Gases
Gasification
Reaction rates
Dilution
11 Citations (Scopus)

Breaking the limits of structural and mechanical imaging of the heterogeneous structure of coal macerals

Collins, L., Tselev, A., Jesse, S., Okatan, M. B., Proksch, R., Mathews, J. P., Mitchell, G. D., Rodriguez, B. J., Kalinin, S. V. & Ivanov, I. N., Oct 31 2014, In : Nanotechnology. 25, 43, 435402.

Research output: Contribution to journalArticle

Coal
Imaging techniques
Mechanical properties
Bituminous coal
Defect density
93 Citations (Scopus)

Chemical-structural properties of South African bituminous coals: Insights from wide angle XRD-carbon fraction analysis, ATR-FTIR, solid state 13C NMR, and HRTEM techniques

Okolo, G. N., Neomagus, H. W. J. P., Everson, R. C., Roberts, M. J., Bunt, J. R., Sakurovs, R. & Mathews, J. P., Jun 22 2015, In : Fuel. 158, p. 779-792 14 p.

Research output: Contribution to journalArticle

Coal
Bituminous coal
High resolution transmission electron microscopy
Structural properties
Infrared spectroscopy

Coal char reactivity and micro-structure influences in O2/CO2 combustion using simplified atomistic simulation

Wang, C. A., Xin, H. H., Watson, J. K., Che, D. F. & Mathews, J. P., Jul 1 2016, In : Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics. 37, 7, p. 1583-1588 6 p.

Research output: Contribution to journalArticle

Coal
coal
reactivity
microstructure
Microstructure
44 Citations (Scopus)

Coal seam porosity and fracture heterogeneity of macrolithotypes in the Hancheng Block, eastern margin, Ordos Basin, China

Zhao, J., Xu, H., Tang, D., Mathews, J. P., Li, S. & Tao, S., Apr 1 2016, In : International Journal of Coal Geology. 159, p. 18-29 12 p.

Research output: Contribution to journalArticle

lithotype
coal seam
Porosity
porosity
Coal
136 Citations (Scopus)

Combustion of an Illinois No. 6 coal char simulated using an atomistic char representation and the ReaxFF reactive force field

Castro-Marcano, F., Kamat, A. M., Russo, M. F., Van Duin, A. & Mathews, J. P., Mar 1 2012, In : Combustion and Flame. 159, 3, p. 1272-1285 14 p.

Research output: Contribution to journalArticle

Coal
coal
field theory (physics)
hydrocarbon combustion
biomass
3 Citations (Scopus)

Competitive or additive behavior for H 2 O and CO 2 gasification of coal char? Exploration via simplistic atomistic simulation

Du, Y., Wang, C., Xin, H., Che, D. & Mathews, J. P., Jan 1 2019, In : Carbon. 141, p. 226-237 12 p.

Research output: Contribution to journalArticle

Coal
Carbon Monoxide
Gasification
Gases
Pore size

Computer tomography of laboratory generated delayed coke

Mathews, J. P., Karacan, O., Dutta, R. P., Yang, M. G. & Eser, S., Dec 1 2001, In : American Chemical Society, Division of Petroleum Chemistry, Preprints. 46, 3, p. 252-255 4 p.

Research output: Contribution to journalArticle

Coke
Tomography
2 Citations (Scopus)

Concerning the nature of coal solutions and suspensions

Painter, P., Sobkowiak, M., Mathews, J. P. & Scaroni, A., Jul 2004, In : Energy and Fuels. 18, 4, p. 1104-1107 4 p.

Research output: Contribution to journalArticle

Coal
Suspensions
Gels
Particles (particulate matter)
Molecules
11 Citations (Scopus)

Constitution of Drop-Tube-Generated Coal Chars from Vitrinite- and Inertinite-Rich South African Coals

Louw, E. B., Mitchell, G. D., Wang, J., Winans, R. E. & Mathews, J. P., Jan 21 2016, In : Energy and Fuels. 30, 1, p. 112-120 9 p.

Research output: Contribution to journalArticle

Ashes
Coal
Nitrogen
X ray scattering
Minerals
14 Citations (Scopus)

Construction Strategy for Atomistic Models of Coal Chars Capturing Stacking Diversity and Pore Size Distribution

Wang, CA., Watson, J. K., Louw, E. & Mathews, J. P., Aug 20 2015, In : Energy and Fuels. 29, 8, p. 4814-4826 13 p.

Research output: Contribution to journalArticle

Coal
Pore size
Helium
Microporosity
Order disorder transitions
8 Citations (Scopus)
Thermolysis
Molecular modeling
Coal
Lignin
Tars
41 Citations (Scopus)

Correlation between Microporosity and Fractal Dimension of Bituminous Coal Based on Computer-Generated Models

Faulon, J. L., Mathews, J. P., Carlson, G. A. & Hatcher, P. G., Mar 1 1994, In : Energy and Fuels. 8, 2, p. 408-414 7 p.

Research output: Contribution to journalArticle

Microporosity
Coal
Bituminous coal
Fractal dimension
Adsorbates
17 Citations (Scopus)

Density functional theory molecular modelling and experimental particle kinetics for CO2-char gasification

Roberts, M. J., Everson, R. C., Domazetis, G., Neomagus, H. W. J. P., Jones, J. M., Van Sittert, C. G. C. E., Okolo, G. N., Niekerk, D. V. & Mathews, J. P., Aug 8 2015, In : Carbon. 93, p. 295-314 20 p.

Research output: Contribution to journalArticle

Molecular modeling
Gasification
Discrete Fourier transforms
Density functional theory
Kinetics
39 Citations (Scopus)

Determining the molecular weight distribution of Pocahontas No. 3 low-volatile bituminous coal utilizing HRTEM and laser desorption ionization mass spectra data

Mathews, J. P., Fernandez-Also, V., Daniel Jones, A. & Schobert, H. H., Jul 1 2010, In : Fuel. 89, 7, p. 1461-1469 9 p.

Research output: Contribution to journalArticle

Coal
Bituminous coal
Molecular weight distribution
Ionization
Desorption
12 Citations (Scopus)

Devolatilization, a molecular modeling approach

Mathews, J. P., Hatcher, P. G. & Scaroni, A. W., Dec 1 1998, In : ACS Division of Fuel Chemistry, Preprints. 43, 1, p. 136-138 3 p.

Research output: Contribution to journalArticle

Molecular modeling
Molecular orientation
Bituminous coal
Reforming reactions
Hydrogen
1 Citation (Scopus)
Energy conservation
Teaching
Students
Environmental protection
Animation
30 Citations (Scopus)

Dispersion of liquefaction catalysts in coal using ionic liquids

Painter, P., Cetiner, R., Pulati, N., Sobkowiak, M. & Mathews, J., May 20 2010, In : Energy and Fuels. 24, 5, p. 3086-3092 7 p.

Research output: Contribution to journalArticle

Ionic Liquids
Coal
Liquefaction
Ionic liquids
Catalysts
1 Citation (Scopus)

Dissolution and dispersion of coal in ionic liquids

Painter, P. C., Pulati, N., Cetiner, R., Sobkowiak, M., Mitchell, G. & Mathews, J. P., 2010, In : ACS National Meeting Book of Abstracts.

Research output: Contribution to journalArticle

Ionic Liquids
Coal
Ionic liquids
Dissolution
Liquefaction
75 Citations (Scopus)

Dissolution and dispersion of coal in ionic liquids

Painter, P., Pulati, N., Cetiner, R., Sobkowiak, M., Mitchell, G. D. & Mathews, J. P., Mar 18 2010, In : Energy and Fuels. 24, 3, p. 1848-1853 6 p.

Research output: Contribution to journalArticle

Ionic Liquids
Coal
Ionic liquids
Dissolution
Pyridine
27 Citations (Scopus)

Effect of CO2 injection on heterogeneously permeable coalbed reservoirs

Kumar, H., Elsworth, D., Mathews, J. P., Liu, J. & Pone, D., Jan 11 2014, In : Fuel. 135, p. 509-521 13 p.

Research output: Contribution to journalArticle

Methane
Recovery
Carbon Monoxide
Swelling
Sorption
17 Citations (Scopus)

Elucidation of the structural and molecular properties of typical South African coals

Hattingh, B. B., Everson, R. C., Neomagus, H. W. J. P., Bunt, J. R., Van Niekerk, D., Jordaan, J. H. L. & Mathews, J. P., Jun 20 2013, In : Energy and Fuels. 27, 6, p. 3161-3172 12 p.

Research output: Contribution to journalArticle

Coal
Carbon
Coking
Molecular mass
Nuclear magnetic resonance
17 Citations (Scopus)

Evaluation of coal macrolithotypes distribution by geophysical logging data in the Hancheng Block, Eastern Margin, Ordos Basin, China

Xu, H., Tang, D., Mathews, J. P., Zhao, J., Li, B., Tao, S. & Li, S., Aug 1 2016, In : International Journal of Coal Geology. 165, p. 265-277 13 p.

Research output: Contribution to journalArticle

Coal
coal
basin
coalbed methane
Peat
23 Citations (Scopus)

Fine structure evaluation of the pair distribution function with molecular models of the Argonne Premium coals

Castro-Marcano, F., Winans, R. E., Chupas, P., Chapman, K., Calo, J. M., Watson, J. K. & Mathews, J. P., Jul 19 2012, In : Energy and Fuels. 26, 7, p. 4336-4345 10 p.

Research output: Contribution to journalArticle

Coal
Distribution functions
Anthracite
Electron microscopes
Crystalline materials
41 Citations (Scopus)

High-resolution X-ray computed tomography observations of the thermal drying of lump-sized subbituminous coal

Mathews, J. P., Pone, J. D. N., Mitchell, G. D. & Halleck, P., Jan 1 2011, In : Fuel processing technology. 92, 1, p. 58-64 7 p.

Research output: Contribution to journalArticle

Coal
Tomography
Drying
X rays
Coal preparation
36 Citations (Scopus)

Improved low-volatile bituminous coal representation: Incorporating the molecular-weight distribution

Narkiewicz, M. R. & Mathews, J. P., Sep 2008, In : Energy and Fuels. 22, 5, p. 3104-3111 8 p.

Research output: Contribution to journalArticle

Coal
Bituminous coal
Molecular weight distribution
Carboxylation
Helium
18 Citations (Scopus)

Improved quantification of curvature in high-resolution transmission electron microscopy lattice fringe micrographs of soots

Wang, C., Huddle, T., Huang, C. H., Zhu, W., Vander Wal, R. L., Lester, E. H. & Mathews, J. P., Jun 1 2017, In : Carbon. 117, p. 174-181 8 p.

Research output: Contribution to journalArticle

Soot
High resolution transmission electron microscopy
Defects
Carbon black
Climate change
61 Citations (Scopus)

Inducing fractures and increasing cleat apertures in a bituminous coal under isotropic stress via application of microwave energy

Kumar, H., Lester, E., Kingman, S., Bourne, R., Avila, C., Jones, A., Robinson, J., Halleck, P. M. & Mathews, J. P., Oct 1 2011, In : International Journal of Coal Geology. 88, 1, p. 75-82 8 p.

Research output: Contribution to journalArticle

bituminous coal
Bituminous coal
Microwaves
energy
tomography

Influence of chemical structure on the fluidity of rapidly heated bituminous vitrinites

Mathews, J. P., Hatcher, P. G. & Scaroni, A. W., Dec 1 1997, In : ACS Division of Fuel Chemistry, Preprints. 42, 1, p. 214-216 3 p.

Research output: Contribution to journalArticle

Fluidity
Helium
Particle size
Hydrogen
Thermoplastics
44 Citations (Scopus)

Influence of maceral composition on the structure, properties and behaviour of chars derived from South African coals

Roberts, M. J., Everson, R. C., Neomagus, H. W. J. P., Van Niekerk, D., Mathews, J. P. & Branken, D. J., Feb 15 2015, In : Fuel. 142, p. 9-20 12 p.

Research output: Contribution to journalArticle

Coal
Chemical analysis
Molecules
Atoms
Nitrogen
30 Citations (Scopus)

Interactions of Illinois No. 6 bituminous coal with solvents: A review of solvent swelling and extraction literature

Mathews, J. P., Clifford, C. E. & Painter, P., Mar 19 2015, In : Energy and Fuels. 29, 3, p. 1279-1294 16 p.

Research output: Contribution to journalArticle

Coal
Bituminous coal
Swelling
Ashes
Pyridine

Macromolecular transformations for tectonically-deformed high volatile bituminous via HRTEM and XRD analyses

Song, Y., Jiang, B., Li, M., Hou, C. & Mathews, J. P., Mar 1 2020, In : Fuel. 263, 116756.

Research output: Contribution to journalArticle

Coal
Graphitization
Methane
Tectonics
Image analysis
29 Citations (Scopus)

Mapping internal structure of coal by confocal micro-Raman spectroscopy and scanning microwave microscopy

Tselev, A., Ivanov, I. N., Lavrik, N. V., Belianinov, A., Jesse, S., Mathews, J. P., Mitchell, G. D. & Kalinin, S. V., Jun 15 2014, In : Fuel. 126, p. 32-37 6 p.

Research output: Contribution to journalArticle

Coal
Raman spectroscopy
Microscopic examination
Microwaves
Scanning
27 Citations (Scopus)

Molecular dynamic simulation of coal-solvent interactions in Permian-aged South African coals

Van Niekerk, D. & Mathews, J. P., Apr 1 2011, In : Fuel Processing Technology. 92, 4, p. 729-734 6 p.

Research output: Contribution to journalArticle

Coal
Molecular dynamics
Computer simulation
Swelling
Hydrogen bonds
37 Citations (Scopus)

Molecular exchange of ch4 and co2 in coal: Enhanced coalbed methane on a nanoscale

Tambach, T. J., Mathews, J. P. & Bergen, F. V., Oct 15 2009, In : Energy and Fuels. 23, 10, p. 4845-4847 3 p.

Research output: Contribution to journalArticle

Coal
Adsorption
Molecules
Equations of motion
Molecular dynamics
80 Citations (Scopus)

Molecular representations of Permian-aged vitrinite-rich and inertinite-rich South African coals

Niekerk, D. V. & Mathews, J. P., Jan 1 2010, In : Fuel. 89, 1, p. 73-82 10 p.

Research output: Contribution to journalArticle

Coal
Molecules
Nuclear magnetic resonance
Atoms
High resolution transmission electron microscopy
106 Citations (Scopus)

Molecular size of asphaltene solubility fractions

Groenzin, H., Mullins, O. C., Eser, S., Mathews, J. P., Yang, M. G. & Jones, D., Mar 1 2003, In : Energy and Fuels. 17, 2, p. 498-503 6 p.

Research output: Contribution to journalArticle

Population distribution
Solubility
Wavelength
Depolarization
Petroleum
4 Citations (Scopus)
Coal
Visualization
Molecules
Graph theory
Chemical properties
6 Citations (Scopus)
Coal
Molecules
Visualization
Thermolysis
Graph theory
5 Citations (Scopus)

Novel simplification approach for large-scale structural models of coal: Three-dimensional molecules to two-dimensional lattices. Part 3: Reactive lattice simulations

Alvarez, Y. E., Moreno, B. M., Klein, M. T., Watson, J. K., Castro-Marcano, F. & Mathews, J. P., Jun 20 2013, In : Energy and Fuels. 27, 6, p. 2915-2922 8 p.

Research output: Contribution to journalArticle

Coal
Molecules
Kinetics
Ethers
Thermolysis