World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
66
Citations
16918
World Ranking
7220
National Ranking
416

Stephen J. Allen 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 Stephen J. Allen sits on this spectrum.

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 publications 1,295+

This scientist: 154 publications — 15th percentile

15% of scientists in this discipline score the same or lower.

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

Stephen J. Allen 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 Stephen J. Allen sits on this spectrum.

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 D-Index 159+

This scientist: 66 D-Index — 60th percentile

60% of scientists in this discipline score the same or lower.

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

Overview

Stephen J. Allen is affiliated with Queen's University Belfast in the United Kingdom. Their research profile reflects involvement in academic endeavors primarily connected to this institution.

No specific recent papers or publications have been recorded, nor are there listed frequent co-authors or common publication venues associated with their work in the data provided.

Details regarding the main fields of study, subfields, or main topics of their research have not been indicated in the current information.

There is no record of book publications or awards linked to this researcher in the information given.

Their academic contributions, affiliations, and potential areas of research cannot be further detailed based on the provided data.

Best Publications

  • Adsorption isotherm models for basic dye adsorption by peat in single and binary component systems

    Stephen Allen;G. McKay;J.F. Porter

  • The removal of dyes from textile wastewater: a study of the physical characteristics and adsorption mechanisms of diatomaceous earth

    M.A. Al-Ghouti;Majeda Khraisheh;Stephen Allen;Mohamad Ahmad

  • Effect of carbon surface chemistry on the removal of reactive dyes from textile effluent

    Y. Al-Degs;M.A.M. Khraisheh;S.J. Allen;M.N. Ahmad

  • Metal removal from wastewater using peat.

    P.A Brown;S.A Gill;S.J Allen

  • Adsorption of Methylene Blue onto activated carbon produced from steam activated bituminous coal: A study of equilibrium adsorption isotherm

    Emad N. El Qada;Stephen J. Allen;Gavin M. Walker

  • Intraparticle diffusion of a basic dye during adsorption onto sphagnum peat

    S.J. Allen;Gordon Mckay;K.Y.H. Khader

  • Kinetic and thermodynamics of chromium ions adsorption onto low-cost dolomite adsorbent

    Ahmad B. Albadarin;Chirangano Mangwandi;Ala’a H. Al-Muhtaseb;Ala’a H. Al-Muhtaseb;Gavin M. Walker

  • Comparison of optimised isotherm models for basic dye adsorption by kudzu

    Stephen J. Allen;Quan Gan;Ronan Matthews;Pauline A. Johnson

  • Kinetics of a reactive dye adsorption onto dolomitic sorbents.

    G.M. Walker;L. Hansen;J.-A. Hanna;S.J. Allen

  • Adsorption of basic dyes from aqueous solution onto activated carbons

    Emad N. El Qada;Stephen J. Allen;Gavin M. Walker

  • Thermodynamic behaviour and the effect of temperature on the removal of dyes from aqueous solution using modified diatomite: A kinetic study

    M. Al-Ghouti;M.A.M. Khraisheh;Mohamad Ahmad;Stephen Allen

  • Effect of OH and silanol groups in the removal of dyes from aqueous solution using diatomite.

    M.A.M. Khraisheh;M.A. Al-Ghouti;Stephen Allen;Mohamad Ahmad

  • Isotherm analyses for single component and multi-component metal sorption onto lignite

    Stephen J. Allen;Pauline A. Brown

  • Adsorption behaviour of methylene blue onto Jordanian diatomite: A kinetic study

    Mohammad A. Al-Ghouti;Majeda A.M. Khraisheh;Mohammad N.M. Ahmad;Stephen Allen

  • Kinetic dynamics in heterogeneous enzymatic hydrolysis of cellulose: an overview, an experimental study and mathematical modelling

    Quan Gan;Stephen Allen;G. Taylor

  • Enhanced removal of organic matter and ammoniacal-nitrogen in a column experiment of tidal flow constructed wetland system.

    Guangzhi Sun;Yaqian Zhao;Stephen Allen

  • Transport processes in the sorption of colored ions by peat particles

    Gordon McKay;Stephen J Allen;Ian F McConvey;Michael S Otterburn

  • Adsorption Characteristics of Reactive Dyes in Columns of Activated Carbon

    Y.S. Al-Degs;M.A.M. Khraisheh;S.J. Allen;M.N. Ahmad

  • Biosorption of toxic chromium from aqueous phase by lignin: mechanism, effect of other metal ions and salts

    Ahmad B. Albadarin;Ala’a H. Al-Muhtaseb;Nasir A. Al-laqtah;Gavin M. Walker

  • Kinetic modeling of the adsorption of basic dyes by kudzu.

    Stephen J. Allen;Quan Gan;Ronan Matthews;Pauline A. Johnson

Frequent Co-Authors

Gordon McKay
Gordon McKay Hamad bin Khalifa University
Gavin Walker
Gavin Walker University of Limerick
Ahmad B. Albadarin
Ahmad B. Albadarin University of Limerick
Mohammad N.M. Ahmad
Mohammad N.M. Ahmad American University of Beirut
Majeda Khraisheh
Majeda Khraisheh Qatar University
Guangzhi Sun
Guangzhi Sun Edith Cowan University
Yaqian Zhao
Yaqian Zhao Xi'an University of Technology
Ala’a H. Al-Muhtaseb
Ala’a H. Al-Muhtaseb Sultan Qaboos University
Ian S. Young
Ian S. Young Queen's University Belfast
Mika Sillanpää
Mika Sillanpää University of Johannesburg

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