Hellmut G. Karge

2.6k total citations
52 papers, 1.6k citations indexed

About

Hellmut G. Karge is a scholar working on Inorganic Chemistry, Materials Chemistry and Industrial and Manufacturing Engineering. According to data from OpenAlex, Hellmut G. Karge has authored 52 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Inorganic Chemistry, 22 papers in Materials Chemistry and 10 papers in Industrial and Manufacturing Engineering. Recurrent topics in Hellmut G. Karge's work include Zeolite Catalysis and Synthesis (32 papers), Chemical Synthesis and Characterization (9 papers) and Mesoporous Materials and Catalysis (9 papers). Hellmut G. Karge is often cited by papers focused on Zeolite Catalysis and Synthesis (32 papers), Chemical Synthesis and Characterization (9 papers) and Mesoporous Materials and Catalysis (9 papers). Hellmut G. Karge collaborates with scholars based in Germany, Hungary and Russia. Hellmut G. Karge's co-authors include Jens Weitkamp, V. Dondur, W. Nießen, Hermann K. Beyer, J. Raskó, I. G. Dalla Lana, Blanka Wichterlová, Ming Jiang, H. Bludau and Vladimir B. Kazansky and has published in prestigious journals such as The Journal of Physical Chemistry B, Langmuir and The Journal of Physical Chemistry.

In The Last Decade

Hellmut G. Karge

51 papers receiving 1.5k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hellmut G. Karge Germany 22 962 955 374 347 257 52 1.6k
H.G. Karge Germany 24 936 1.0× 1.1k 1.1× 358 1.0× 518 1.5× 224 0.9× 52 1.5k
J.M. Guil Spain 18 1.3k 1.3× 944 1.0× 406 1.1× 474 1.4× 194 0.8× 42 1.7k
H. Stach Germany 20 776 0.8× 730 0.8× 606 1.6× 264 0.8× 119 0.5× 50 1.7k
Hermann K. Beyer Hungary 23 1.5k 1.5× 1.4k 1.4× 310 0.8× 517 1.5× 405 1.6× 53 2.1k
Richard M. Kirchner United States 15 845 0.9× 1.1k 1.1× 221 0.6× 189 0.5× 250 1.0× 27 1.6k
J.H.C. van Hooff Netherlands 25 1.5k 1.6× 1.4k 1.4× 216 0.6× 568 1.6× 274 1.1× 45 1.9k
S.G. Hegde India 24 1.1k 1.2× 789 0.8× 298 0.8× 360 1.0× 206 0.8× 50 1.9k
R. Vetrivel India 22 806 0.8× 664 0.7× 215 0.6× 275 0.8× 125 0.5× 78 1.5k
G. Poncelet Belgium 31 1.6k 1.7× 937 1.0× 472 1.3× 470 1.4× 155 0.6× 66 2.5k
Claude Naccache France 17 880 0.9× 737 0.8× 303 0.8× 489 1.4× 113 0.4× 42 1.3k

Countries citing papers authored by Hellmut G. Karge

Since Specialization
Citations

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

Fields of papers citing papers by Hellmut G. Karge

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hellmut G. Karge. 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 Hellmut G. Karge. The network helps show where Hellmut G. Karge may publish in the future.

Co-authorship network of co-authors of Hellmut G. Karge

This figure shows the co-authorship network connecting the top 25 collaborators of Hellmut G. Karge. A scholar is included among the top collaborators of Hellmut G. Karge 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 Hellmut G. Karge. Hellmut G. Karge 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.
Karge, Hellmut G. & Jens Weitkamp. (2008). Adsorption and Diffusion. Digital Access to Libraries (Université catholique de Louvain (UCL), l'Université de Namur (UNamur) and the Université Saint-Louis (USL-B)). 98 indexed citations
2.
Karge, Hellmut G.. (2005). Infrared spectroscopic investigation of diffusion, co-diffusion and counter-diffusion of hydrocarbon molecules in zeolites. Comptes Rendus Chimie. 8(3-4). 303–319. 26 indexed citations
3.
Karge, Hellmut G. & Hermann K. Beyer. (2002). Solid‐State Ion Exchange in Microporous and Mesoporous Materials.. ChemInform. 33(40). 243–243. 6 indexed citations
4.
Karge, Hellmut G., et al.. (1999). Sorption and Sorption Kinetics of Ethylbenzene in MFI-Type Zeolites Studied by a Barometric Technique. Collection of Czechoslovak Chemical Communications. 64(3). 483–494. 3 indexed citations
5.
Karge, Hellmut G., Michael Hunger, & Hermann K. Beyer. (1999). ChemInform Abstract: Characterization of Zeolites — Infrared and Nuclear Magnetic Resonance Spectroscopy and X‐Ray Diffraction. ChemInform. 30(52). 1 indexed citations
6.
Bludau, H., Hellmut G. Karge, & W. Nießen. (1998). Sorption, sorption kinetics and diffusion of pyridine in zeolites. Microporous and Mesoporous Materials. 22(1-3). 297–308. 48 indexed citations
7.
Gutsze, A., et al.. (1996). Characterization of Lewis-acid sites in zeolites by EPR using the NO molecule as a probe. Journal of the Chemical Society Faraday Transactions. 92(13). 2495–2495. 31 indexed citations
8.
Karge, Hellmut G., et al.. (1994). Solid-state ion exchange in zeolites: Part 6. SystemLaCl3/NaY zeolite. Zeolites. 14(7). 512–518. 12 indexed citations
9.
Lázár, Károly, Gabriella Pál‐Borbély, Hermann K. Beyer, & Hellmut G. Karge. (1994). Solid-state ion exchange in zeolites. Part 5.—NH4-Y–iron(II) chloride. Journal of the Chemical Society Faraday Transactions. 90(9). 1329–1334. 39 indexed citations
10.
Gruenert, Wolfgang, Robert Schloegl, & Hellmut G. Karge. (1993). Investigations of zeolites by photoelectron and ion scattering spectroscopy. 1. New applications of surface spectroscopic methods to zeolites by a high-temperature measurement technique. The Journal of Physical Chemistry. 97(33). 8638–8645. 15 indexed citations
11.
Karge, Hellmut G., et al.. (1993). A microcalorimetric investigation of heteropolyacids. Microporous Materials. 1(5). 313–322. 58 indexed citations
12.
Nießen, W. & Hellmut G. Karge. (1993). Diffusion of p-xylene in single and binary systems in zeolites investigated by FTIR spectroscopy. Microporous Materials. 1(1). 1–8. 63 indexed citations
13.
Grünert, Wolfgang, Robert Schlögl, & Hellmut G. Karge. (1993). Photoelectron and ion scattering spectroscopy of zeolites under reduced surface‐charge conditions. Surface and Interface Analysis. 20(7). 603–606. 6 indexed citations
14.
Karge, Hellmut G., Blanka Wichterlová, & Hermann K. Beyer. (1992). High-temperature interaction of solid Cu chlorides and Cu oxides in mixtures with H-forms of ZSM-5 and Y zeolites. Journal of the Chemical Society Faraday Transactions. 88(9). 1345–1351. 51 indexed citations
15.
Darmstadt, Hans, et al.. (1991). Bestimmung der Menge und des H/C‐Verhältnisses von Koksablagerungen auf Zeolith‐Katalysatoren. Chemie Ingenieur Technik. 63(7). 742–744. 1 indexed citations
16.
Karge, Hellmut G., V. Dondur, & Jens Weitkamp. (1991). Investigation of the distribution of acidity strength in zeolites by temperature-programmed desorption of probe molecules. 2. Dealuminated Y-type zeolites. The Journal of Physical Chemistry. 95(1). 283–288. 142 indexed citations
17.
Lagercrantz, Carl, Göran Magnusson, Hellmut G. Karge, et al.. (1990). The Aminooxyl Radicals Formed by Addition of Photochemically Generated Radicals to Ethyl 2-Oximino-3-oxobutanoate Studied by EPR Spectroscopy.. Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistry. 44. 262–267. 2 indexed citations
18.
Stöcker, Michael, Stefan Ernst, Hellmut G. Karge, et al.. (1990). 29Si-MAS NMR Studies of Hydrothermal Dealumination of Zeolite ZSM-20.. Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistry. 44. 519–521. 3 indexed citations
19.
20.
Karge, Hellmut G., et al.. (1988). In-situ IR investigation of coke formation on dealuminated mordenite catalysts. Catalysis Today. 3(1). 53–63. 38 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by H.G. Karge Breakdown of academic impact, for papers by J.M. Guil Breakdown of academic impact, for papers by H. Stach Breakdown of academic impact, for papers by Hermann K. Beyer Breakdown of academic impact, for papers by Richard M. Kirchner Breakdown of academic impact, for papers by J.H.C. van Hooff Breakdown of academic impact, for papers by S.G. Hegde Breakdown of academic impact, for papers by R. Vetrivel Breakdown of academic impact, for papers by G. Poncelet Breakdown of academic impact, for papers by Claude Naccache
Rankless by CCL
2026