If you made any changes in Pure, your changes will be visible here soon.

Research Output 1994 2020

Article
38 Citations (Scopus)

Optimizing enhanced coalbed methane recovery for unhindered production and CO2 injectivity

Kumar, H., Elsworth, D., Liu, J., Pone, D. & Mathews, J. P., Nov 1 2012, In : International Journal of Greenhouse Gas Control. 11, p. 86-97 12 p.

Research output: Contribution to journalArticle

coalbed methane
permeability
Recovery
Moisture
Gases
24 Citations (Scopus)

Particle size dependence of coal volatile matter: Is there a non-maceral-related effect?

Mathews, J. P., Hatcher, P. G. & Scaroni, A. W., Mar 1997, In : Fuel. 76, 4, p. 359-362 4 p.

Research output: Contribution to journalArticle

Coal
Particle size
Bituminous coal
Minerals
Chemical analysis
11 Citations (Scopus)

Particle size influence on the pore development of nanopores in coal gasification chars: From micron to millimeter particles

Coetzee, G. H., Sakurovs, R., Neomagus, H. W. J. P., Everson, R. C., Mathews, J. P. & Bunt, J. R., Feb 1 2017, In : Carbon. 112, p. 37-46 10 p.

Research output: Contribution to journalArticle

Nanopores
Coal gasification
Particle size
Steam
Gasification
92 Citations (Scopus)

Permeability evolution in fractured coal - Combining triaxial confinement with X-ray computed tomography, acoustic emission and ultrasonic techniques

Cai, Y., Liu, D., Mathews, J. P., Pan, Z., Elsworth, D., Yao, Y., Li, J. & Guo, X., Feb 1 2014, In : International Journal of Coal Geology. 122, p. 91-104 14 p.

Research output: Contribution to journalArticle

acoustic emission
Acoustic emissions
tomography
Tomography
Ultrasonics
37 Citations (Scopus)

Permeability evolution in sorbing media: Analogies between organic-rich shale and coal

Kumar, H., Elsworth, D., Mathews, J. P. & Marone, C., Feb 1 2016, In : Geofluids. 16, 1, p. 43-55 13 p.

Research output: Contribution to journalArticle

shale
permeability
coal
gas
coalbed methane
19 Citations (Scopus)

Permeability evolution of propped artificial fractures in coal on injection of CO2

Kumar, H., Elsworth, D., Liu, J., Pone, D. & Mathews, J. P., Sep 1 2015, In : Journal of Petroleum Science and Engineering. 133, p. 695-704 10 p.

Research output: Contribution to journalArticle

Injection (oil wells)
Proppants
Coal
permeability
coal
11 Citations (Scopus)

Petrographic and reflectance analysis of solvent-swelled and solvent-extracted South African vitrinite-rich and inertinite-rich coals

Van Niekerk, D., Mitchell, G. D. & Mathews, J. P., Jan 7 2010, In : International Journal of Coal Geology. 81, 1, p. 45-52 8 p.

Research output: Contribution to journalArticle

vitrinite
reflectance
Coal
coal
maceral
15 Citations (Scopus)

Pore development during gasification of South African inertinite-rich chars evaluated using small angle X-ray scattering

Coetzee, G. H., Sakurovs, R., Neomagus, H. W. J. P., Morpeth, L., Everson, R. C., Mathews, J. P. & Bunt, J. R., Oct 11 2015, In : Carbon. 95, p. 250-260 11 p.

Research output: Contribution to journalArticle

Steam
X ray scattering
Gasification
Pore size
Coal
2 Citations (Scopus)

Preliminary results on the molecular structures of the Athabasca and Cold Lake asphaltenes

Mathews, J. P., Eser, S. & Parviz-Rahimi, Aug 22 1999, In : ACS Division of Fuel Chemistry, Preprints. 44, 4, p. 783-785 3 p.

Research output: Contribution to journalArticle

Asphaltenes
Molecular structure
Lakes
27 Citations (Scopus)

Proposed model structures for Upper Freeport and Lewiston-Stockton vitrinites

Mathews, J. P., Hatcher, P. G. & Scaroni, A. W., Jul 2001, In : Energy and Fuels. 15, 4, p. 863-873 11 p.

Research output: Contribution to journalArticle

Coal
Model structures
Molecular structure
Molecular mechanics
Swelling
13 Citations (Scopus)

Pulsed laser annealing of carbon black

Abrahamson, J. P., Singh, M., Mathews, J. P. & Vander Wal, R. L., Nov 2017, In : Carbon. 124, p. 380-390 11 p.

Research output: Contribution to journalArticle

Soot
Carbon black
Pulsed lasers
Annealing
Lasers
43 Citations (Scopus)

Pyrolysis of a large-scale molecular model for Illinois no. 6 coal using the ReaxFF reactive force field

Castro-Marcano, F., Russo, M. F., Van Duin, A. & Mathews, J. P., Sep 1 2014, In : Journal of Analytical and Applied Pyrolysis. 109, p. 79-89 11 p.

Research output: Contribution to journalArticle

Coal
Pyrolysis
Sulfur
Tars
Tar
12 Citations (Scopus)

Quantifying Curvature in High-Resolution Transmission Electron Microscopy Lattice Fringe Micrographs of Coals

Wang, C., Huddle, T., Lester, E. H. & Mathews, J. P., Apr 21 2016, In : Energy and Fuels. 30, 4, p. 2694-2704 11 p.

Research output: Contribution to journalArticle

Coal
High resolution transmission electron microscopy
Anthracite
Image analysis
1 Citation (Scopus)

ReaxFF MD simulations of petroleum coke CO2 gasification examining the S/N removal mechanisms and CO/CO2 reactivity

Zhong, Q., Zhang, Y., Shabnam, S., Mao, Q., Xiao, J., van Duin, A. C. T. & Mathews, J. P., Dec 1 2019, In : Fuel. 257, 116051.

Research output: Contribution to journalArticle

Petroleum coke
Carbon Monoxide
Gasification
Atoms
Pyrolysis
6 Citations (Scopus)

ReaxFF simulations of petroleum coke sulfur removal mechanisms during pyrolysis and combustion

Zhong, Q., Mao, Q., Xiao, J., van Duin, A. C. T. & Mathews, J. P., Dec 2018, In : Combustion and Flame. 198, p. 146-157 12 p.

Research output: Contribution to journalArticle

Petroleum coke
coke
Desulfurization
crude oil
pyrolysis
2 Citations (Scopus)

Reduction of caking propensity in large (millimeter-sized) South African coal particles with potassium carbonate impregnation to expand fixed- and fluidized-bed gasification feedstock suitability

Coetzee, S., Neomagus, H. W. J. P., Bunt, J. R., Mathews, J. P., Strydom, C. A. & Schobert, H. H., Jul 16 2015, In : Energy and Fuels. 29, 7, p. 4255-4263 9 p.

Research output: Contribution to journalArticle

Potash
Coal
Gasification
Impregnation
Fluidized beds
1 Citation (Scopus)

Reductive Gaseous (H2/NH3) Desulfurization and Gasification of High-Sulfur Petroleum Coke via Reactive Force Field Molecular Dynamics Simulations

Zhong, Q., Zhang, Y., Shabnam, S., Xiao, J., Van Duin, A. C. T. & Mathews, J. P., Sep 19 2019, In : Energy and Fuels. 33, 9, p. 8065-8075 11 p.

Research output: Contribution to journalArticle

Petroleum coke
Desulfurization
Hydrodesulfurization
Gasification
Sulfur
82 Citations (Scopus)

Simulation of nanoporous carbons: A chemically constrained structure

Acharya, M., Strano, M. S., Mathews, J. P., Billinge, S. J. L., Petkov, V., Subramoney, S. & Foley, H. C., Jan 1 1999, In : Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties. 79, 10, p. 1499-1518 20 p.

Research output: Contribution to journalArticle

Carbon
carbon
simulation
Light extinction
Neutron diffraction
9 Citations (Scopus)

Simulation of solvent extraction of South African vitrinite- and inertinite-rich coals

Van Niekerk, D. & Mathews, J. P., Dec 16 2010, In : Energy and Fuels. 24, 12, p. 6393-6399 7 p.

Research output: Contribution to journalArticle

Coal
Solvent extraction
Solubility
Ionization
Mass spectrometry
18 Citations (Scopus)

Solvent swelling behavior of Permian-aged South African vitrinite-rich and inertinite-rich coals

Niekerk, D. V., Halleck, P. M. & Mathews, J. P., Jan 1 2010, In : Fuel. 89, 1, p. 19-25 7 p.

Research output: Contribution to journalArticle

Coal
Swelling
Kinetic parameters
Molecular structure
Tomography
8 Citations (Scopus)

Solvent swelling extent of permian-aged vitrinite- and inertinite-rich coals: Experiments and modeling using the perturbed-chain statistical associating fluid theory (PC-SAFT)

Van Niekerk, D., Castro-Marcano, F., Colina, C. M. & Mathews, J. P., Jun 16 2011, In : Energy and Fuels. 25, 6, p. 2559-2564 6 p.

Research output: Contribution to journalArticle

Coal
Swelling
Fluids
Experiments
Carbon Disulfide
60 Citations (Scopus)

Soot and char molecular representations generated directly from HRTEM lattice fringe images using Fringe3D

Fernandez-Alos, V., Watson, J. K., Wal, R. V. & Mathews, J. P., Sep 1 2011, In : Combustion and Flame. 158, 9, p. 1807-1813 7 p.

Research output: Contribution to journalArticle

Soot
soot
centroids
Molecules
Carbon
80 Citations (Scopus)

Sorption capacity and sorption kinetic measurements of CO 2 and CH 4 in confined and unconfined bituminous coal

Pone, J. D. N., Halleck, P. M. & Mathews, J. P., Sep 17 2009, In : Energy and Fuels. 23, 9, p. 4688-4695 8 p.

Research output: Contribution to journalArticle

Coal
Bituminous coal
Carbon Monoxide
Sorption
Kinetics
96 Citations (Scopus)

Structural characterization of vitrinite-rich and inertinite-rich Permian-aged South African bituminous coals

Van Niekerk, D., Pugmire, R. J., Solum, M. S., Painter, P. C. & Mathews, J. P., Dec 1 2008, In : International Journal of Coal Geology. 76, 4, p. 290-300 11 p.

Research output: Contribution to journalArticle

vitrinite
bituminous coal
Bituminous coal
Permian
Coal
15 Citations (Scopus)

Structural determinations of Pennsylvania anthracites

Pappano, P. J., Mathews, J. P. & Schobert, H. H., Dec 1 1999, In : ACS Division of Fuel Chemistry, Preprints. 44, 3, p. 567-568 2 p.

Research output: Contribution to journalArticle

Anthracite
Molecular modeling
1 Citation (Scopus)

Structural Differences of Spontaneous Combustion Prone Inertinite-Rich Chinese Lignite Coals: Insights from XRD, Solid-State 13 C NMR, LDIMS, and HRTEM

Zhang, Y., Zhang, X., Zhong, Q., Hu, S. & Mathews, J. P., May 16 2019, In : Energy and Fuels. 33, 5, p. 4575-4584 10 p.

Research output: Contribution to journalArticle

Spontaneous combustion
Coal
Lignite
Nuclear magnetic resonance
X ray diffraction
12 Citations (Scopus)

Structural features of Qingdao petroleum coke from HRTEM lattice fringes: Distributions of length, orientation, stacking, curvature, and a large-scale image-guided 3D atomistic representation

Zhong, Q., Mao, Q., Zhang, L., Xiang, J., Xiao, J. & Mathews, J. P., Apr 2018, In : Carbon. 129, p. 790-802 13 p.

Research output: Contribution to journalArticle

Petroleum coke
Coke
Ionization
Mass spectrometry
Desorption
7 Citations (Scopus)

Structural transformations and hydrocarbon generation of low-rank coal (vitrinite) during slow heating pyrolysis

Song, Y., Jiang, B., Mathews, J. P., Yan, G. & Li, F., Jan 1 2017, In : Fuel processing technology. 167, p. 535-544 10 p.

Research output: Contribution to journalArticle

Coal
Hydrocarbons
Heating rate
Pyrolysis
Heating
9 Citations (Scopus)

Sulfur removal from petroleum coke during high-temperature pyrolysis. Analysis from TG-MS data and ReaxFF simulations

Zhong, Q., Mao, Q., Xiao, J., Van Duin, A. & Mathews, J. P., Jun 1 2018, In : Journal of Analytical and Applied Pyrolysis. 132, p. 134-142 9 p.

Research output: Contribution to journalArticle

Petroleum coke
Desulfurization
Pyrolysis
Sulfur
Thiophenes
19 Citations (Scopus)

The characterisation of slow-heated inertinite- and vitrinite-rich coals from the South African coalfields

Roberts, M. J., Everson, R. C., Neomagus, H. W. J. P., Okolo, G. N., Van Niekerk, D. & Mathews, J. P., Jun 17 2015, In : Fuel. 158, p. 591-601 11 p., 9309.

Research output: Contribution to journalArticle

Coal
Pyrolysis
Temperature
Nuclear magnetic resonance
Microporosity
3 Citations (Scopus)

The impact of the coal macrolithotype on reservoir productivity, hydraulic fracture initiation and propagation

Liu, Y., Xu, H., Tang, D., Mathews, J. P., Zhai, Y., Hou, W., Li, S., Tao, S., Xiong, X. & Wang, W., Mar 1 2019, In : Fuel. 239, p. 471-483 13 p.

Research output: Contribution to journalArticle

Coal
Crack propagation
Productivity
Hydraulics
15 Citations (Scopus)

The shape of pulverized bituminous vitrinite coal particles

Mathews, J. P., Eser, S., Hatcher, P. G. & Scaroni, A. W., Jan 1 2007, In : KONA Powder and Particle Journal. 25, March, p. 145-152 8 p.

Research output: Contribution to journalArticle

Coal
Bituminous coal
Ceilings
Brick
Coal mines
41 Citations (Scopus)

The structural alignment of coal and the analogous case of Argonne Upper Freeport coal

Mathews, J. P. & Sharma, A., May 1 2012, In : Fuel. 95, p. 19-24 6 p.

Research output: Contribution to journalArticle

Coal
Anthracite
Bituminous coal
Lignite
Image analysis
121 Citations (Scopus)

The utility of coal molecular models

Mathews, J. P., Van Duin, A. & Chaffee, A. L., Apr 1 2011, In : Fuel processing technology. 92, 4, p. 718-728 11 p.

Research output: Contribution to journalArticle

Coal
Pyrolysis
Sorption
Ions
Water
44 Citations (Scopus)

Three-dimensional carbon dioxide-induced strain distribution within a confined bituminous coal

Pone, J. D. N., Hile, M., Halleck, P. M. & Mathews, J. P., Jan 7 2009, In : International Journal of Coal Geology. 77, 1-2, p. 103-108 6 p.

Research output: Contribution to journalArticle

bituminous coal
Bituminous coal
swelling
Carbon dioxide
carbon dioxide
1 Citation (Scopus)

Time-temperature histories of bituminous coal particles in a drop-tube reactor

Mathews, J. P., Hatcher, P. G., Eser, S., Walsh, P. M. & Scaroni, A. W., Dec 1 1998, In : ACS Division of Fuel Chemistry, Preprints. 43, 3, p. 611-613 3 p.

Research output: Contribution to journalArticle

Bituminous coal
Coal
Temperature
Coal combustion
Brick
23 Citations (Scopus)

Visual representation of carbon dioxide adsorption in a low-volatile bituminous coal molecular model

Narkiewicz, M. R. & Mathews, J. P., Oct 15 2009, In : Energy and Fuels. 23, 10, p. 5236-5246 11 p.

Research output: Contribution to journalArticle

Coal
Bituminous coal
Carbon Dioxide
Carbon dioxide
Adsorption
Conference article
4 Citations (Scopus)

An assessment of active and project based learning in energy conservation education for non-technical students

Pisupati, S. V., Mathews, J. P., DiBiase, D. & Scaroni, A. W., Oct 25 2004, In : ASEE Annual Conference Proceedings. p. 851-870 20 p.

Research output: Contribution to journalConference article

Energy conservation
Education
Students
Environmental protection
Energy conversion
8 Citations (Scopus)

Energy conservation education for non-engineering students and the effectiveness of active learning components

Pisupati, S. V., Mathews, J. P. & Scaroni, A. W., Dec 1 2003, In : ASEE Annual Conference Proceedings. p. 12811-12819 9 p.

Research output: Contribution to journalConference article

Energy conservation
Education
Students
Washers
Ovens
2 Citations (Scopus)

For an online course encompassing "traditional campus students": How, where, and when students work and engage with the course material

Mathews, J. P., Haughton, N., Pisupati, S., Scaroni, A. W. & DiBiase, D., Dec 1 2004, In : Proceedings - Frontiers in Education Conference, FIE. 2, p. F1D-12-F1D-16

Research output: Contribution to journalConference article

Students
student
Education
general education
environmental engineering
9 Citations (Scopus)

Methane and Carbon Dioxide Sorption and Transport Rates in Coal at In-situ Conditions

Pone, J. D. N., Halleck, P. M. & Mathews, J. P., Feb 1 2009, In : Energy Procedia. 1, 1, p. 3121-3128 8 p.

Research output: Contribution to journalConference article

Sorption
Carbon dioxide
Methane
Coal
Industrial emissions
2 Citations (Scopus)

Molecular Basis for Carbon Dioxide Sequestration in Coal

Dick, T. J., Acevedo, O., Dalal, P., Madura, J. D., Evanseck, J. D. & Mathews, J. P., Mar 1 2002, In : ACS Division of Fuel Chemistry, Preprints. 47, 1, p. 14-16 3 p.

Research output: Contribution to journalConference article

Sorption
Carbon dioxide
Coal
Molecular modeling
Bituminous coal
1 Citation (Scopus)

Online teaching of "Energy & the environment"

Mathews, J. P., Spielvogel, E., Wherley, M., DiBiase, D. & Pisupati, S. V., Dec 1 2003, In : ASEE Annual Conference Proceedings. p. 6739-6748 10 p.

Research output: Contribution to journalConference article

Teaching
Students
Problem-Based Learning
Electronic mail
Students
Conference contribution
1 Citation (Scopus)

Advances in coal analyses and simulations 1989-2012

Mathews, J. P., Winans, R., Rodgers, R. P. & Sharma, A., Dec 1 2012, 29th Annual International Pittsburgh Coal Conference 2012, PCC 2012. p. 1484-1494 11 p. (29th Annual International Pittsburgh Coal Conference 2012, PCC 2012; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Coal
coal
simulation
nuclear magnetic resonance
Cyclotron resonance

Chinese coal-in-title journal articles in Chinese and English

Mathews, J. P., Song, C., Finkelman, R. & Yue, W., Dec 1 2012, 29th Annual International Pittsburgh Coal Conference 2012, PCC 2012. p. 2601-2615 15 p. (29th Annual International Pittsburgh Coal Conference 2012, PCC 2012; vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Coal
coal
Coal research
science
Coal liquefaction

Coal it's elementary my dear Watson

Mathews, J. P., Krishnamoorthy, V., Louw, E., Tchapda, A. H. N., Castro-Marcano, F., Karri, V., Alexis, D. A. & Mitchell, G. D., Dec 1 2011, 28th Annual International Pittsburgh Coal Conference 2011, PCC 2011. p. 1827-1841 15 p. (28th Annual International Pittsburgh Coal Conference 2011, PCC 2011; vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Coal
coal
Calorific value
Helium
vitrinite

Designing On-Line, General Education, Natural Science Courses, in the College of Earth and Mineral Sciences (EMS), at the Pennsylvania State University

Howell, P. R., Mathews, J. P., Pisupati, S. V., Babb, D. M. & Locklin, R. H., Jan 1 2006, EISTA 2006 - 4th Int. Conf. on Education and Information Systems: Technologies and Applications, Jointly with SOIC 2006 - 2nd Int. Conf. on SOIC and PISTA 2006 - 4th Int. Conf. on PISTA, Proceedings. International Institute of Informatics and Systemics, IIIS, Vol. 2. p. 12-17 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Natural sciences
general education
natural sciences
Minerals
Education

Fine structure evaluation of the pair correlation function with molecular slice models of the argonne premium coals

Castro-Marcano, F., Winans, R. E., Chupas, P., Chapman, K., Calo, J. M. & Mathews, J. P., Dec 1 2011, 28th Annual International Pittsburgh Coal Conference 2011, PCC 2011. p. 1520-1532 13 p. (28th Annual International Pittsburgh Coal Conference 2011, PCC 2011; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Coal
coal
stacking
anthracite
Anthracite

Institutional perspective on online education at Penn State

Mathews, J. P. & DiBiase, D., Jan 1 2006, EISTA 2006 - 4th Int. Conf. on Education and Information Systems: Technologies and Applications, Jointly with SOIC 2006 - 2nd Int. Conf. on SOIC and PISTA 2006 - 4th Int. Conf. on PISTA, Proceedings. International Institute of Informatics and Systemics, IIIS, p. 29-32 4 p. (EISTA 2006 - 4th Int. Conf. on Education and Information Systems: Technologies and Applications, Jointly with SOIC 2006 - 2nd Int. Conf. on SOIC and PISTA 2006 - 4th Int. Conf. on PISTA, Proceedings; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Education
Students
certification
education
Minerals