Roland Span

14.2k total citations · 5 hit papers
172 papers, 11.2k citations indexed

About

Roland Span is a scholar working on Biomedical Engineering, Organic Chemistry and Fluid Flow and Transfer Processes. According to data from OpenAlex, Roland Span has authored 172 papers receiving a total of 11.2k indexed citations (citations by other indexed papers that have themselves been cited), including 123 papers in Biomedical Engineering, 68 papers in Organic Chemistry and 53 papers in Fluid Flow and Transfer Processes. Recurrent topics in Roland Span's work include Phase Equilibria and Thermodynamics (105 papers), Chemical Thermodynamics and Molecular Structure (68 papers) and Thermodynamic properties of mixtures (50 papers). Roland Span is often cited by papers focused on Phase Equilibria and Thermodynamics (105 papers), Chemical Thermodynamics and Molecular Structure (68 papers) and Thermodynamic properties of mixtures (50 papers). Roland Span collaborates with scholars based in Germany, United States and Norway. Roland Span's co-authors include Wolfgang Wagner, Eric W. Lemmon, Marcus Budt, Jinyue Yan, Daniël De Wolf, R. T. Jacobsen, A. Yokozeki, Monika Thol, Johannes Gernert and Jadran Vrabec and has published in prestigious journals such as The Journal of Chemical Physics, SHILAP Revista de lepidopterología and Energy & Environmental Science.

In The Last Decade

Roland Span

167 papers receiving 10.7k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple-Point Temperature to 1100 K at Pressures up to 800 MPa

1996 4.0k citations Roland Span et al. profile →
A review on compressed air energy storage: Basic principles, past milestones and recent developments

2016 803 citations Roland Span et al. profile →
A Reference Equation of State for the Thermodynamic Properties of Nitrogen for Temperatures from 63.151 to 1000 K and Pressures to 2200 MPa

2000 678 citations Roland Span, Eric W. Lemmon et al. profile →
Short Fundamental Equations of State for 20 Industrial Fluids

2006 613 citations Eric W. Lemmon, Roland Span profile →
Hydrogen liquefaction: a review of the fundamental physics, engineering practice and future opportunities

2022 318 citations Saif Z.S. Al Ghafri, U. Cardella et al. Energy & Environmental Science profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Roland Span Germany	36	6.1k	3.6k	2.2k	2.1k	1.4k	172	11.2k
Eric W. Lemmon United States	45	7.0k 1.2×	6.5k 1.8×	3.1k 1.4×	2.6k 1.2×	638 0.4×	127	15.2k
Ding‐Yu Peng Canada	16	7.0k 1.2×	2.8k 0.8×	3.2k 1.5×	2.6k 1.2×	1.3k 0.9×	50	11.4k
Michael L. Michelsen Denmark	54	8.0k 1.3×	2.3k 0.6×	3.9k 1.8×	2.8k 1.3×	668 0.5×	176	12.0k
J. P. Martin Trusler United Kingdom	48	3.9k 0.6×	2.0k 0.6×	1.7k 0.8×	1.4k 0.7×	1.7k 1.1×	222	7.7k
W. A. Wakeham United Kingdom	58	8.2k 1.4×	3.4k 0.9×	3.2k 1.5×	2.5k 1.2×	768 0.5×	331	14.8k
Erling H. Stenby Denmark	52	5.2k 0.9×	2.9k 0.8×	2.3k 1.1×	1.3k 0.6×	1.2k 0.8×	313	9.6k
Ioannis G. Economou Greece	54	5.1k 0.8×	1.6k 0.4×	2.7k 1.2×	1.7k 0.8×	795 0.5×	254	9.1k
Marcia L. Huber United States	44	5.2k 0.9×	4.1k 1.1×	3.0k 1.4×	1.8k 0.9×	291 0.2×	164	10.2k
Georgios M. Kontogeorgis Denmark	57	9.9k 1.6×	2.3k 0.6×	6.3k 2.9×	3.7k 1.7×	562 0.4×	392	13.4k
Amparo Galindo United Kingdom	52	7.3k 1.2×	2.7k 0.8×	4.0k 1.9×	2.2k 1.0×	467 0.3×	184	10.5k

Countries citing papers authored by Roland Span

Since Specialization

Citations

This map shows the geographic impact of Roland Span's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Roland Span with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Roland Span more than expected).

Fields of papers citing papers by Roland Span

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roland Span. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Roland Span. The network helps show where Roland Span may publish in the future.

Co-authorship network of co-authors of Roland Span

This figure shows the co-authorship network connecting the top 25 collaborators of Roland Span. A scholar is included among the top collaborators of Roland Span based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Roland Span. Roland Span is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Thol, Monika, et al.. (2025). Measurements of the Viscosity of n-Hydrogen and (n-Hydrogen + Carbon Dioxide), (n-Hydrogen + Methane), and (n-Hydrogen + Ethane) Mixtures at Temperatures from (253.15 to 473.15) K and at Pressures up to 20 MPa. International Journal of Thermophysics. 46(4). 1 indexed citations

Blahut, Aleš, et al.. (2025). Density, Heat Capacity, and Vapor Pressure of Squalane. International Journal of Thermophysics. 47(2).

Muhler, Martin, et al.. (2025). Linking experimental H2O vapor adsorption on biomass char with physicochemical char properties and MD simulation. Fluid Phase Equilibria. 597. 114460–114460. 1 indexed citations

Span, Roland, et al.. (2024). Experimental investigation and modeling of mass transport properties of O2 in biomass chars. Chemical Engineering Science. 287. 119735–119735. 2 indexed citations

Span, Roland, et al.. (2024). Experimental speed-of-sound data and a fundamental equation of state for normal hydrogen optimized for flow measurements. The Journal of Chemical Thermodynamics. 198. 107341–107341. 5 indexed citations

Austegard, Anders, et al.. (2024). Measurements of the Viscosity of Hydrogen and a (Hydrogen + Methane) Mixture with a Two-Capillary Viscometer. International Journal of Thermophysics. 45(4). 7 indexed citations

Eckhard, Till, Carmela Russo, Osvalda Senneca, et al.. (2023). Mineral effects on chemical and physical transformations of fast pyrolysis products of cellulose-based model fuels in N2 and CO2. Fuel. 340. 127477–127477. 6 indexed citations

Ghafri, Saif Z.S. Al, U. Cardella, Thomas Funke, et al.. (2022). Hydrogen liquefaction: a review of the fundamental physics, engineering practice and future opportunities. Energy & Environmental Science. 15(7). 2690–2731. 318 indexed citations breakdown →

Span, Roland, et al.. (2021). Micropore Analysis of Biomass Chars by CO₂ Adsorption: Comparison of Different Analysis Methods. Energy & Fuels. 35(10). 8799–8806. 18 indexed citations

10.

Richter, Markus, et al.. (2021). Systematic heat transfer measurements in highly viscous binary fluids. Heat and Mass Transfer. 57(12). 2067–2080. 3 indexed citations

11.

Richter, Markus, et al.. (2021). Development of a modified standard apparatus for heat transfer measurements in highly viscous binary fluids. Heat and Mass Transfer. 1 indexed citations

12.

Span, Roland, et al.. (2020). A pore-structure dependent kinetic adsorption model for consideration in char conversion – Adsorption kinetics of CO2 on biomass chars. Chemical Engineering Science. 231. 116281–116281. 17 indexed citations

13.

Span, Roland, et al.. (2020). Comparison of micro- and macropore evolution of coal char during pyrolysis. Fuel. 275. 117845–117845. 12 indexed citations

14.

Heuer, Sebastian, et al.. (2019). Evolution of coal char porosity from CO2-pyrolysis experiments. Fuel. 253. 1457–1464. 19 indexed citations

15.

Vorobiev, Nikita, et al.. (2016). Sorption measurements for determining surface effects and structure of solid fuels. Fuel Processing Technology. 153. 81–86. 9 indexed citations

16.

Thol, Monika, Eric W. Lemmon, & Roland Span. (2012). Equation of state for benzene for temperatures from the melting line up to 725 K with pressures up to 500 MPa | NIST. High Temperatures-High Pressures. 41. 10 indexed citations

17.

Schwede, Sebastian, et al.. (2011). Scale Up of Laboratory Scale to Industrial Scale Biogas Plants. Linköping electronic conference proceedings. 57. 48–55. 13 indexed citations

18.

Schwede, Sebastian, et al.. (2011). Influence of Different Cell Disruption Techniques on Mono Digestion of Algal Biomass. Linköping electronic conference proceedings. 57. 41–47. 36 indexed citations

19.

Feistel, Rainer, et al.. (2010). Thermodynamic properties of sea air. Ocean science. 6(1). 91–141. 37 indexed citations

20.

Span, Roland, et al.. (1994). TLC Detection of Pyrrolizidine Alkaloids in Oil Extracted from the Seeds of Borago officinalis.. 7(1). 80–82. 8 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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