H. Freund

2.5k total citations · 2 hit papers
21 papers, 2.2k citations indexed

About

H. Freund is a scholar working on Materials Chemistry, Catalysis and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, H. Freund has authored 21 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Materials Chemistry, 8 papers in Catalysis and 6 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in H. Freund's work include Catalytic Processes in Materials Science (11 papers), Catalysis and Oxidation Reactions (6 papers) and Advanced Chemical Physics Studies (5 papers). H. Freund is often cited by papers focused on Catalytic Processes in Materials Science (11 papers), Catalysis and Oxidation Reactions (6 papers) and Advanced Chemical Physics Studies (5 papers). H. Freund collaborates with scholars based in Germany, United States and Italy. H. Freund's co-authors include C. Lemire, S. Shaikhutdinov, Randall J. Meyer, S. R. Kelemen, Günther Rupprechter, Joaquín Silvestre‐Albero, Shamil Shaikhutdinov, P. J. Kwiatek, Martin L. Gorbaty and David J. Curry and has published in prestigious journals such as Angewandte Chemie International Edition, Journal of Catalysis and Catalysis Today.

In The Last Decade

H. Freund

21 papers receiving 2.2k citations

Hit Papers

Surface chemistry of catalysis by gold 2004 2026 2011 2018 2004 2007 200 400 600
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.

  1. Surface chemistry of catalysis by gold
    2004 709 citations Randall J. Meyer, C. Lemire et al. Gold bulletin profile →
  2. Direct Characterization of Kerogen by X-ray and Solid-State 13C Nuclear Magnetic Resonance Methods
    2007 422 citations S. R. Kelemen, Mobae Afeworki et al. Energy & Fuels profile →

Peers

H. Freund
L. Petrakis United States
J. Matthiesen Denmark
Lev D. Gelb United States
Małgorzata Śliwińska-Bartkowiak Poland
Kunimitsu Morishige Japan
Ad M. J. van der Eerden Netherlands
Steven F. Dec United States
Dirk Wallacher Germany
Kenkichi Ishigure Japan
Sugata P. Tan United States
L. Petrakis United States
H. Freund
Citations per year, relative to H. Freund H. Freund (= 1×) peers L. Petrakis

Countries citing papers authored by H. Freund

Since Specialization
Citations

This map shows the geographic impact of H. Freund'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 H. Freund with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H. Freund more than expected).

Fields of papers citing papers by H. Freund

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. Freund. 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 H. Freund. The network helps show where H. Freund may publish in the future.

Co-authorship network of co-authors of H. Freund

This figure shows the co-authorship network connecting the top 25 collaborators of H. Freund. A scholar is included among the top collaborators of H. Freund 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 H. Freund. H. Freund is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Pan, Qiushi, Xuefei Weng, Mingshu Chen, et al.. (2015). Enhanced CO Oxidation on the Oxide/Metal Interface: From Ultra‐High Vacuum to Near‐Atmospheric Pressures. ChemCatChem. 7(17). 2620–2627. 47 indexed citations
2.
Willinger, Marc‐Georg, Wei Zhang, Олександр Бондарчук, et al.. (2014). A Case of Strong Metal–Support Interactions: Combining Advanced Microscopy and Model Systems to Elucidate the Atomic Structure of Interfaces. Angewandte Chemie International Edition. 53(23). 5998–6001. 168 indexed citations
3.
Freund, H.. (2008). Model Systems in Heterogeneous Catalysis: Selectivity Studies at the Atomic Level. Topics in Catalysis. 48(1-4). 137–144. 40 indexed citations
4.
Kelemen, S. R., Mobae Afeworki, Martin L. Gorbaty, et al.. (2007). Direct Characterization of Kerogen by X-ray and Solid-State 13C Nuclear Magnetic Resonance Methods. Energy & Fuels. 21(3). 1548–1561. 422 indexed citations breakdown →
5.
Schalow, Tobias, Björn Brandt, David E. Starr, et al.. (2006). Size‐Dependent Oxidation Mechanism of Supported Pd Nanoparticles. Angewandte Chemie International Edition. 45(22). 3693–3697. 138 indexed citations
6.
Schalow, Tobias, B. L. Brandt, Mathias Laurin, et al.. (2006). CO oxidation on partially oxidized Pd nanoparticles. Journal of Catalysis. 242(1). 58–70. 64 indexed citations
7.
Silvestre‐Albero, Joaquín, Günther Rupprechter, & H. Freund. (2006). Atmospheric pressure studies of selective 1,3-butadiene hydrogenation on well-defined Pd/Al2O3/NiAl(110) model catalysts: Effect of Pd particle size. Journal of Catalysis. 240(1). 58–65. 121 indexed citations
8.
Kelemen, S. R., Clifford C. Walters, Deniz Ertaş, H. Freund, & David J. Curry. (2006). Petroleum Expulsion Part 3. A Model of Chemically Driven Fractionation during Expulsion of Petroleum from Kerogen. Energy & Fuels. 20(1). 309–319. 62 indexed citations
9.
Freund, H.. (2006). Models for oxidation catalyst: Characterization and reaction at the atomic level. Catalysis Today. 117(1-3). 6–14. 24 indexed citations
10.
Silvestre‐Albero, Joaquín, Günther Rupprechter, & H. Freund. (2005). Atmospheric pressure studies of selective 1,3-butadiene hydrogenation on Pd single crystals: effect of CO addition. Journal of Catalysis. 235(1). 52–59. 68 indexed citations
11.
Meyer, Randall J., C. Lemire, S. Shaikhutdinov, & H. Freund. (2004). Surface chemistry of catalysis by gold. Gold bulletin. 37(1-2). 72–124. 709 indexed citations breakdown →
12.
Kelemen, S. R., H. Freund, Martin L. Gorbaty, & P. J. Kwiatek. (1999). Thermal Chemistry of Nitrogen in Kerogen and Low-Rank Coal. Energy & Fuels. 13(2). 529–538. 80 indexed citations
13.
Requejo, A.G., H. Freund, H. Thomann, et al.. (1992). Maturation of petroleum source rocks. 1. Changes in kerogen structure and composition associated with hydrocarbon generation. Energy & Fuels. 6(2). 203–214. 48 indexed citations
14.
Kelemen, S. R. & H. Freund. (1990). Oxidation kinetics of Wyoming Powder River Basin coal in oxygen between 295 and 398 K. Energy & Fuels. 4(2). 165–171. 21 indexed citations
15.
Freund, H. & William N. Olmstead. (1989). Detailed chemical kinetic modeling of butylbenzene pyrolysis. International Journal of Chemical Kinetics. 21(7). 561–574. 49 indexed citations
16.
Kelemen, S. R. & H. Freund. (1989). Oxidation kinetics of Illinois No. 6 coal in air between 295 and 398 K. Energy & Fuels. 3(4). 498–505. 28 indexed citations
17.
Freund, H. & William N. Olmstead. (1988). Detailed chemical kinetic modeling of butylbenzene pyrolysis. Preprints - American Chemical Society. Division of Petroleum Chemistry. 33(3). 470–477. 1 indexed citations
18.
Kelemen, S. R. & H. Freund. (1988). XPS characterization of glassy-carbon surfaces oxidized by O2, CO2, and HNO3. Energy & Fuels. 2(2). 111–118. 49 indexed citations
19.
Freund, H. & S. R. Kelemen. (1985). Auger electron spectroscopy studies of calcium containing carbon surfaces. Applications of Surface Science. 20(3). 267–278. 3 indexed citations
20.
Kelemen, S. R., H. Freund, & Charles A. Mims. (1984). The dependence of H2O adsorption and reaction on the structure of the carbon substrate. Journal of Vacuum Science & Technology A Vacuum Surfaces and Films. 2(2). 987–990. 33 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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