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Engineering and Technology
UK
2026

D-Index & Metrics

Chemistry

D-Index
112
Citations
41440
World Ranking
745
National Ranking
36

Engineering and Technology

D-Index
112
Citations
42953
World Ranking
75
National Ranking
4

Paul T. Williams publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Paul T. Williams sits on this spectrum.

38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38 publications 804+

This scientist: 496 publications — 94th percentile

94% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

Paul T. Williams D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Paul T. Williams sits on this spectrum.

30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 112 D-Index — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

Research.com Recognitions

  • 2026 - Research.com Engineering and Technology in United Kingdom Leader Award
  • 2025 - Research.com Engineering and Technology in United Kingdom Leader Award

Overview

Paul T. Williams is affiliated with the University of Leeds in the United Kingdom. Their research encompasses multiple fields including Engineering, Environmental Science, and Materials Science. Within these broad categories, their work spans subfields such as Biomedical Engineering, Industrial and Manufacturing Engineering, Materials Chemistry, Mechanical Engineering, and Catalysis.

The primary research topics addressed by Williams include Thermochemical Biomass Conversion Processes, Recycling and Waste Management Techniques, Catalysts for Methane Reforming, Catalysis and Hydrodesulfurization Studies, Catalytic Processes in Materials Science, Graphene research and applications, and Chemical Looping and Thermochemical Processes.

Williams has contributed to a range of peer-reviewed journals, frequently publishing in:

  • Energy & Fuels
  • Journal of Analytical and Applied Pyrolysis
  • Fuel Processing Technology
  • Waste Disposal & Sustainable Energy
  • Journal of the Energy Institute

Several recent papers authored or co-authored by Williams include:

  • Hydrogen and Carbon Nanotubes from Pyrolysis-Catalysis of Waste Plastics: A Review, 2020, Waste and Biomass Valorization
  • Thermochemical conversion of sewage sludge: A critical review, 2020, Progress in Energy and Combustion Science
  • Recent advances in integrated CO2 capture and utilization: a review, 2021, Sustainable Energy & Fuels
  • Modified nickel-based catalysts for improved steam reforming of biomass tar: A critical review, 2021, Renewable and Sustainable Energy Reviews
  • Carbon nanotubes from post-consumer waste plastics: Investigations into catalyst metal and support material characteristics, 2020, Applied Catalysis B: Environmental

Williams collaborates frequently with other researchers. The most common co-authors include Mohamad A. Nahil, Chunfei Wu, Shuzhuang Sun, Hanping Chen, and Ye Shui Zhang.

Best Publications

  • Waste treatment and disposal

    Paul T. Williams

  • Torrefaction of reed canary grass, wheat straw and willow to enhance solid fuel qualities and combustion properties

    T. G. Bridgeman;J. M. Jones;I. F. Shield;P. T. Williams

  • Pyrolysis of waste tyres: a review.

    Paul T. Williams

  • Comparison of products from the pyrolysis and catalytic pyrolysis of rice husks

    Paul T Williams;Nittaya Nugranad

  • The influence of temperature and heating rate on the slow pyrolysis of biomass

    Paul T. Williams;Serpil Besler

  • Composition of products from the pyrolysis of polyethylene and polystyrene in a closed batch reactor: Effects of temperature and residence time

    Jude A. Onwudili;Nagi Insura;Paul T. Williams

  • Thermochemical conversion of sewage sludge: A critical review

    Ningbo Gao;Kamran Kamran;Cui Quan;Paul T. Williams

  • Influence of temperature on the products from the flash pyrolysis of biomass

    Patrick A. Horne;Paul T. Williams

  • Composition of oils derived from the batch pyrolysis of tyres

    Adrian M. Cunliffe;Paul T. Williams

  • The pyrolysis of scrap automotive tyres: The influence of temperature and heating rate on product composition

    Unknown

  • Fluidised bed pyrolysis of low density polyethylene to produce petrochemical feedstock

    Paul T Williams;Elizabeth A Williams

  • Catalytic pyrolysis of polyethylene

    Ranbir Bagri;Paul T Williams

  • Separation and recovery of materials from scrap printed circuit boards

    William J. Hall;Paul T. Williams

  • Characteristics of biochars from crop residues: potential for carbon sequestration and soil amendment.

    Jayne H. Windeatt;Andrew B. Ross;Paul T. Williams;Piers M. Forster

  • Interaction of Plastics in Mixed-Plastics Pyrolysis

    Paul T. Williams;Elizabeth A. Williams

  • Analysis of products from the pyrolysis and liquefaction of single plastics and waste plastic mixtures

    Paul T. Williams;Edward Slaney

  • Spanish Aerobiology Network (REA): management and quality manual

    Unknown

  • Development of activated carbon pore structure via physical and chemical activation of biomass fibre waste

    Paul T. Williams;Anton R. Reed

  • Catalytic pyrolysis of waste plastics using staged catalysis for production of gasoline range hydrocarbon oils

    Devy K. Ratnasari;Mohamad A. Nahil;Paul T. Williams

  • Pyrolysis of waste materials using TGA-MS and TGA-FTIR as complementary characterisation techniques

    Surjit Singh;Chunfei Wu;Paul T. Williams

  • Recent advances in integrated CO 2 capture and utilization: a review

    Unknown

  • Pyrolysis-thermogravimetric analysis of tyres and tyre components

    Paul T. Williams;Serpil Besler

Frequent Co-Authors

Chunfei Wu
Chunfei Wu Queen's University Belfast
Jude A. Onwudili
Jude A. Onwudili Aston University
Gordon E. Andrews
Gordon E. Andrews University of Leeds
Keith D. Bartle
Keith D. Bartle University of Leeds
Jun Huang
Jun Huang University of Sydney
Haiping Yang
Haiping Yang Huazhong University of Science and Technology
Valerie Dupont
Valerie Dupont University of Leeds
Hanping Chen
Hanping Chen Huazhong University of Science and Technology
Haisheng Chen
Haisheng Chen Chinese Academy of Sciences
Andrew Ross
Andrew Ross University of Leeds

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