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D-Index & Metrics

Discipline name D-Index World Ranking National Ranking Publications Citations
Chemistry 67 7126 2115 243 11509

Gerald P. Huffman publications per year

The chart shows the history of publications by Gerald P. Huffman between 1967 and 2018, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Gerald P. Huffman published across 52 years, from 1967 to 2018, averaging 5.5 papers a year. Output peaked at 23 publications in 1994. 2 of the 284 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1967 to 2018. Vertical axis: number of publications, 0 to 23. Peak 23 publications in 1994. 1967: 4 publications 1968: 1 publication 1969: 1 publication 1970: 2 publications 1971: 3 publications 1972: 5 publications 1973: 2 publications 1974: 1 publication 1975: 1 publication 1976: 5 publications 1977: 1 publication 1978: 2 publications 1979: 3 publications 1980: 2 publications 1981: 4 publications 1982: 2 publications 1983: 4 publications 1984: 4 publications 1985: 2 publications 1986: 6 publications 1987: 2 publications 1988: 3 publications 1989: 6 publications 1990: 5 publications 1991: 8 publications 1992: 13 publications 1993: 15 publications 1994: 23 publications 1995: 13 publications 1996: 16 publications 1997: 4 publications 1998: 8 publications 1999: 8 publications 2000: 12 publications 2001: 4 publications 2002: 5 publications 2003: 6 publications 2004: 15 publications 2005: 14 publications 2006: 8 publications 2007: 9 publications 2008: 6 publications 2009: 4 publications 2010: 5 publications 2011: 6 publications 2012: 5 publications 2013: 1 publication 2014: 2 publications 2015: 0 publications 2016: 1 publication 2017: 1 publication 2018: 1 publication
1967 2018

284 publications in total across all disciplines

View publications per year as a table
Gerald P. Huffman: publications per year, 1967 to 2018
Year Publications
1967 4
1968 1
1969 1
1970 2
1971 3
1972 5
1973 2
1974 1
1975 1
1976 5
1977 1
1978 2
1979 3
1980 2
1981 4
1982 2
1983 4
1984 4
1985 2
1986 6
1987 2
1988 3
1989 6
1990 5
1991 8
1992 13
1993 15
1994 23
1995 13
1996 16
1997 4
1998 8
1999 8
2000 12
2001 4
2002 5
2003 6
2004 15
2005 14
2006 8
2007 9
2008 6
2009 4
2010 5
2011 6
2012 5
2013 1
2014 2
2015 0
2016 1
2017 1
2018 1
Total 284
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Gerald P. Huffman publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Gerald P. Huffman sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 241–260 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 243 publications — 47th percentile

47% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100 243
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Gerald P. Huffman D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Gerald P. Huffman sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 66–67 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 67 D-Index — 62nd percentile

62% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775 67
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Research.com Recognitions

  • 2006 - Fellow of American Physical Society (APS) Citation For wideranging and significant contributions to the field of fossil energy research

Overview

What is he best known for?

The fields of study he is best known for:

  • Organic chemistry
  • Oxygen
  • Hydrogen

X-ray absorption fine structure, Analytical chemistry, Coal, Inorganic chemistry and XANES are his primary areas of study. His X-ray absorption fine structure research is multidisciplinary, incorporating perspectives in Chromium, Mercury, Sulfur and Chemisorption. He has included themes like Transmission electron microscopy and Nuclear chemistry in his Analytical chemistry study.

His Coal study incorporates themes from Deformation, Fly ash, Mineralogy and Liquidus. Gerald P. Huffman has included themes like Hematite, Catalysis and Chlorine in his Inorganic chemistry study. He has researched XANES in several fields, including Combustion and Absorption spectroscopy.

His most cited work include:

  • Hydrogen Production by Catalytic Decomposition of Methane (207 citations)
  • Quantitative analysis of all major forms of sulfur in coal by x-ray absorption fine structure spectroscopy (188 citations)
  • Ferrihydrite: surface structure and its effects on phase transformation (172 citations)

What are the main themes of his work throughout his whole career to date?

His main research concerns Inorganic chemistry, Catalysis, Coal, Analytical chemistry and X-ray absorption fine structure. His Inorganic chemistry research includes elements of Dehydrogenation, Ferrihydrite, Carbon, Syngas and Iron oxide. His Catalysis study incorporates themes from Hydrogen, Liquefaction and Chemical engineering.

His studies deal with areas such as Combustion, Fly ash and Mineralogy, Pyrite as well as Coal. His work on Mössbauer spectroscopy as part of his general Analytical chemistry study is frequently connected to Particle, thereby bridging the divide between different branches of science. The X-ray absorption fine structure study combines topics in areas such as Pyrrhotite, Sulfur, Nickel, Nuclear chemistry and XANES.

He most often published in these fields:

  • Inorganic chemistry (34.27%)
  • Catalysis (33.71%)
  • Coal (33.15%)

What were the highlights of his more recent work (between 2006-2018)?

  • Inorganic chemistry (34.27%)
  • Coal (33.15%)
  • Fly ash (15.17%)

In recent papers he was focusing on the following fields of study:

Gerald P. Huffman mainly focuses on Inorganic chemistry, Coal, Fly ash, Environmental chemistry and Analytical chemistry. His work carried out in the field of Inorganic chemistry brings together such families of science as Oxide, Syngas, Catalysis, Methane and Carbon. His Catalysis research is multidisciplinary, incorporating perspectives in Hydrogen, Carbon nanotube and Nuclear chemistry.

He interconnects Corn stover and Mineralogy in the investigation of issues within Coal. His Fly ash research includes themes of Metallurgy, Quartz, Sulfur, Residual oil and Particle size. His Analytical chemistry study combines topics in areas such as Nanoparticle and Magnetic nanoparticles.

Between 2006 and 2018, his most popular works were:

  • Ultrafine ash aerosols from coal combustion: Characterization and health effects ☆ (99 citations)
  • Selenium and arsenic speciation in fly ash from full-scale coal-burning utility plants (99 citations)
  • Size dependence of magnetic parameters and surface disorder in magnetite nanoparticles (91 citations)

In his most recent research, the most cited papers focused on:

  • Organic chemistry
  • Oxygen
  • Hydrogen

Gerald P. Huffman spends much of his time researching Catalysis, Carbon, Carbon nanotube, Inorganic chemistry and Soot. Gerald P. Huffman combines subjects such as Metal and Aqueous solution with his study of Catalysis. The various areas that Gerald P. Huffman examines in his Carbon study include Hydrogen production, Hydrocarbon and Methane.

The study incorporates disciplines such as Fischer–Tropsch process, Nuclear chemistry, Carbide, Condensation polymer and Aerogel in addition to Inorganic chemistry. His Soot research incorporates elements of Diesel engine, Diesel exhaust, Exhaust gas, Particulates and Particle size. His Exhaust gas research is multidisciplinary, incorporating elements of Air pollution and Analytical chemistry.

Best Publications

  • Hydrogen Production by Catalytic Decomposition of Methane

    Naresh Shah;Devadas Panjala;Gerald P. Huffman

  • Quantitative analysis of all major forms of sulfur in coal by x-ray absorption fine structure spectroscopy

    G. P. Huffman;S. Mitra;F. E. Huggins;N. Shah

  • Ferrihydrite: surface structure and its effects on phase transformation

    Jianmin Zhao;Frank E. Huggins;Zhen Feng;Gerald P. Huffman

  • Activation studies with a precipitated iron catalyst for Fischer-Tropsch synthesis. I. Characterization studies

    D. B. Bukur;K. Okabe;M. P. Rosynek;Chiuping Li

  • Nanocrystalline α-Fe, Fe3C, and Fe7C3 produced by CO2 laser pyrolysis

    Xiang-Xin Bi;B. Ganguly;G.P. Huffman;F.E. Huggins

  • Advantages of soft X-ray absorption over TEM-EELS for solid carbon studies––a comparative study on diesel soot with EELS and NEXAFS

    A. Braun;F.E. Huggins;N. Shah;Y. Chen

  • Magnetic properties of nearly defect-free maghemite nanocrystals

    P. Dutta;A. Manivannan;M. S. Seehra;N. Shah

  • Mineral behavior during coal combustion 2. Illite transformations

    Srivats Srinivasachar;Joseph J. Helble;Arthur A. Boni;Naresh Shah

  • Correlation between ash-fusion temperatures and ternary equilibrium phase diagrams

    Frank E. Huggins;Deborah A. Kosmack;Deborah A. Kosmack;Gerald P. Huffman

  • Ultrafine ash aerosols from coal combustion: Characterization and health effects ☆

    William P. Linak;Jong Ik Yoo;Shirley J. Wasson;Weiyan Zhu

  • Modes of occurrence of trace elements in coal from XAFS spectroscopy

    F.E. Huggins;G.P. Huffman

  • XAFS characterization of mercury captured from combustion gases on sorbents at low temperatures

    Frank E. Huggins;Nora Yap;Gerald P. Huffman;Constance L. Senior

  • Mode of occurrence of arsenic in four US coals

    Allan Kolker;F.E Huggins;C.A Palmer;Naresh Shah

  • Speciation of arsenic and chromium in coal and combustion ash by XAFS spectroscopy

    Gerald P. Huffman;Frank E. Huggins;Naresh Shah;Jianmin Zhao

  • Speciation of elements in NIST particulate matter SRMs 1648 and 1650

    Frank E Huggins;Gerald P Huffman;J D Robertson

  • Size dependence of magnetic parameters and surface disorder in magnetite nanoparticles

    P. Dutta;S. Pal;M. S. Seehra;N. Shah

  • Selenium and arsenic speciation in fly ash from full-scale coal-burning utility plants.

    Unknown

  • Transmission electron microscopy investigation of ultrafine coal fly ash particles.

    Yuanzhi Chen;Naresh Shah;Frank E. Huggins;Gerald P. Huffman

  • Direct speciation of chromium in coal combustion by-products by X-ray absorption fine-structure spectroscopy

    Frank E Huggins;Mohammad Najih;Gerald P Huffman

  • Distribution of trace elements in selected pulverized coals as a function of particle size and density

    C.L. Senior;T. Zeng;J. Che;M.R. Ames

  • XAFS Examination of Mercury Sorption on Three Activated Carbons

    Frank E. Huggins;Gerald P. Huffman;Grant E. Dunham;Constance L. Senior

Frequent Co-Authors

Frank E. Huggins
Frank E. Huggins University of Kentucky
Adel F. Sarofim
Adel F. Sarofim University of Utah
Robert B. Finkelman
Robert B. Finkelman The University of Texas at Dallas
Jost O.L. Wendt
Jost O.L. Wendt University of Utah
Ronald J. Pugmire
Ronald J. Pugmire University of Utah
Richard D. Ernst
Richard D. Ernst University of Utah
Burtron H. Davis
Burtron H. Davis University of Kentucky
Dragomir B. Bukur
Dragomir B. Bukur Texas A&M University
Rick Honaker
Rick Honaker University of Kentucky
Ayyakkannu Manivannan
Ayyakkannu Manivannan West Virginia University

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