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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 65 7847 7117 2280 1889 163 12029

Hanwu Lei publications per year

The chart shows the history of publications by Hanwu Lei between 2004 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hanwu Lei published across 22 years, from 2004 to 2025, averaging 8.5 papers a year. Output peaked at 25 publications in 2020. 15 of the 187 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 2004 to 2025. Vertical axis: number of publications, 0 to 25. Peak 25 publications in 2020. 2004: 1 publication 2005: 2 publications 2006: 1 publication 2007: 2 publications 2008: 2 publications 2009: 2 publications 2010: 9 publications 2011: 5 publications 2012: 11 publications 2013: 13 publications 2014: 3 publications 2015: 6 publications 2016: 10 publications 2017: 10 publications 2018: 12 publications 2019: 10 publications 2020: 25 publications 2021: 19 publications 2022: 18 publications 2023: 11 publications 2024: 9 publications 2025: 6 publications
2004 2025

187 publications in total across all disciplines

View publications per year as a table
Hanwu Lei: publications per year, 2004 to 2025
Year Publications
2004 1
2005 2
2006 1
2007 2
2008 2
2009 2
2010 9
2011 5
2012 11
2013 13
2014 3
2015 6
2016 10
2017 10
2018 12
2019 10
2020 25
2021 19
2022 18
2023 11
2024 9
2025 6
Total 187
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Hanwu Lei publications per year - data summary

  • Hanwu Lei, a Chemistry scholar from Washington State University, has 187 publications recorded across 22 years, from 2004 to 2025.
  • The oldest publication on record dates to 2004 and the most recent to 2025.
  • The most productive year is 2020, with 25 publications.
  • The least productive years with any output are 2004 and 2006, with 1 publication each.
  • The rate of publication averages 8.5 papers per year over the whole span, or 8.5 per year counting only the 22 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 63 publications, 34% of the career total.
  • Split into equal eras - 2004-2011: 24 publications (3.0 per year); 2012-2019: 75 publications (9.4 per year); 2020-2025: 88 publications (14.7 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Hanwu Lei 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 Hanwu Lei 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, 161–180 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: 163 publications — 18th percentile

18% 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 1,350 163
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
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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Hanwu Lei publication distribution in Chemistry in 2026 - data summary

  • The chart plots the publication count of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 63 ranges running from 61–80 to 1,295+ publications.
  • Hanwu Lei, a Chemistry scholar from Washington State University, records 163 publications - the 18th percentile of the discipline.
  • 18% of ranked Chemistry scientists score the same or lower than Hanwu Lei, and about 82% score higher.
  • The median of the discipline falls in the 241–260 publications range, and Hanwu Lei ranks below the median.
  • The most crowded range is 161–180 publications, holding 1,350 scientists (8% of the field).
  • 77% of the field sits in the lowest quarter of the value range (up to 361–380 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,295 publications or more, 100 scientists in all (<1% of the field).

Hanwu Lei 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 Hanwu Lei 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, 64–65 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: 65 D-Index — 58th percentile

58% 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 65
66–67 775
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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Hanwu Lei D-index placement in Chemistry in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 61 ranges running from 40–41 to 159+ D-Index.
  • Hanwu Lei, a Chemistry scholar from Washington State University, records 65 D-Index - the 58th percentile of the discipline.
  • 58% of ranked Chemistry scientists score the same or lower than Hanwu Lei, and about 42% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and Hanwu Lei ranks above the median.
  • The most crowded range is 56–57 D-Index, holding 1,051 scientists (6% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 70–71 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 159 D-Index or more, 98 scientists in all (<1% of the field).

Overview

Hanwu Lei is affiliated with Washington State University in the United States. Their research focuses primarily on fields including Engineering, Materials Science, and Environmental Science, with a notable emphasis on subfields such as Biomedical Engineering, Polymers and Plastics, Industrial and Manufacturing Engineering, Mechanical Engineering, and Materials Chemistry.

The scientist's work covers main topics related to Thermochemical Biomass Conversion Processes, Lignin and Wood Chemistry, Recycling and Waste Management Techniques, Catalysis for Biomass Conversion, Microplastics and Plastic Pollution, Catalysis and Hydrodesulfurization Studies, and Polymer crystallization and properties.

Hanwu Lei has published research in various academic venues, including:

  • Bioresource Technology
  • The Science of The Total Environment
  • Journal of Analytical and Applied Pyrolysis
  • Chemical Engineering Journal
  • SSRN Electronic Journal

The scientist has collaborated frequently with co-authors such as Roger Ruan, Moriko Qian, Erguang Huo, Rongge Zou, and Chenxi Wang.

Among recent papers authored by or involving Hanwu Lei are:

  • Pyrolysis technology for plastic waste recycling: A state-of-the-art review, 2022, Progress in Energy and Combustion Science
  • Catalytic pyrolysis of plastic wastes in a continuous microwave assisted pyrolysis system for fuel production, 2021, Chemical Engineering Journal
  • Synthesis of graphene-like carbon from biomass pyrolysis and its applications, 2020, Chemical Engineering Journal
  • Biochar filled high-density polyethylene composites with excellent properties: Towards maximizing the utilization of agricultural wastes, 2020, Industrial Crops and Products
  • Biochar: From by-products of agro-industrial lignocellulosic waste to tailored carbon-based catalysts for biomass thermochemical conversions, 2022, Chemical Engineering Journal

Best Publications

  • A review of catalytic hydrodeoxygenation of lignin-derived phenols from biomass pyrolysis.

    Quan Bu;Hanwu Lei;Alan H. Zacher;Lu Wang

  • Catalytic co-pyrolysis of lignocellulosic biomass with polymers: a critical review

    Xuesong Zhang;Hanwu Lei;Shulin Chen;Joan Wu

  • Jet fuel production from waste plastics via catalytic pyrolysis with activated carbons

    Yayun Zhang;Yayun Zhang;Dengle Duan;Hanwu Lei;Elmar Villota

  • Catalytic pyrolysis of plastic wastes in a continuous microwave assisted pyrolysis system for fuel production

    Nan Zhou;Leilei Dai;Yuancai Lv;Hui Li;Hui Li

  • Bio-oil from fast pyrolysis of lignin: Effects of process and upgrading parameters.

    Liangliang Fan;Yaning Zhang;Shiyu Liu;Nan Zhou

  • Catalytic pyrolysis of microalgae and their three major components: carbohydrates, proteins, and lipids.

    Zhenyi Du;Bing Hu;Xiaochen Ma;Yanling Cheng

  • Production of phenols and biofuels by catalytic microwave pyrolysis of lignocellulosic biomass.

    Quan Bu;Hanwu Lei;Shoujie Ren;Lu Wang

  • Effects of feedstock characteristics on microwave-assisted pyrolysis – A review

    Yaning Zhang;Paul Chen;Shiyu Liu;Peng Peng

  • Synthesis of graphene-like carbon from biomass pyrolysis and its applications

    Xiao Kong;Xiao Kong;Yifeng Zhu;Hanwu Lei;Chenxi Wang

  • Phenol and phenolics from lignocellulosic biomass by catalytic microwave pyrolysis.

    Quan Bu;Hanwu Lei;Shoujie Ren;Lu Wang

  • Gasoline-range hydrocarbons produced from microwave-induced pyrolysis of low-density polyethylene over ZSM-5

    Xuesong Zhang;Hanwu Lei;Gayatri Yadavalli;Lei Zhu

  • Thermal behavior and kinetic study for catalytic co-pyrolysis of biomass with plastics.

    Xuesong Zhang;Hanwu Lei;Lei Zhu;Xiaolu Zhu

  • The Effects of Reaction Temperature and Time and Particle Size of Corn Stover on Microwave Pyrolysis

    Hanwu Lei;Shoujie Ren;James Julson

  • Fast microwave-assisted pyrolysis of wastes for biofuels production - A review.

    Yaning Zhang;Yunlei Cui;Shiyu Liu;Liangliang Fan

  • Biofuel production and kinetics analysis for microwave pyrolysis of Douglas fir sawdust pellet

    Shoujie Ren;Hanwu Lei;Lu Wang;Quan Bu

  • A review of catalytic microwave pyrolysis of lignocellulosic biomass for value-added fuel and chemicals.

    Hervan Marion Morgan;Quan Bu;Quan Bu;Jianghui Liang;Yujing Liu

  • Bio-based phenols and fuel production from catalytic microwave pyrolysis of lignin by activated carbons.

    Quan Bu;Hanwu Lei;Lu Wang;Yi Wei

  • Thermal behaviour and kinetic study for woody biomass torrefaction and torrefied biomass pyrolysis by TGA

    Shoujie Ren;Hanwu Lei;Lu Wang;Quan Bu

  • The effects of torrefaction on compositions of bio-oil and syngas from biomass pyrolysis by microwave heating.

    Shoujie Ren;Hanwu Lei;Lu Wang;Quan Bu

  • Ex-situ catalytic upgrading of vapors from microwave-assisted pyrolysis of low-density polyethylene with MgO

    Liangliang Fan;Liangliang Fan;Yaning Zhang;Yaning Zhang;Shiyu Liu;Nan Zhou

  • Enhancement of jet fuel range alkanes from co-feeding of lignocellulosic biomass with plastics via tandem catalytic conversions

    Xuesong Zhang;Hanwu Lei;Lei Zhu;Moriko Qian

  • Hydrocarbon and hydrogen-rich syngas production by biomass catalytic pyrolysis and bio-oil upgrading over biochar catalysts

    Shoujie Ren;Hanwu Lei;Lu Wang;Quan Bu

Frequent Co-Authors

Roger Ruan
Roger Ruan University of Minnesota
Yuhuan Liu
Yuhuan Liu Nanchang University
Paul Chen
Paul Chen University of Minnesota
Shulin Chen
Shulin Chen Washington State University
Juming Tang
Juming Tang Washington State University
Birgitte Kiær Ahring
Birgitte Kiær Ahring Washington State University
Qin Zhang
Qin Zhang Washington State University
Chao Liu
Chao Liu Chongqing University
Bo Zhang
Bo Zhang South China University of Technology
Wenguang Zhou
Wenguang Zhou Nanchang University

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