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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 58 10637 9605 155 152 147 11702

Rajnish Kumar publications per year

The chart shows the history of publications by Rajnish Kumar between 1995 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Rajnish Kumar published across 32 years, from 1995 to 2026, averaging 6.1 papers a year. Output peaked at 17 publications in 2019. 16 of the 195 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1995 to 2026. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2019. 1995: 1 publication 1996: 0 publications 1997: 0 publications 1998: 0 publications 1999: 0 publications 2000: 0 publications 2001: 0 publications 2002: 0 publications 2003: 0 publications 2004: 3 publications 2005: 1 publication 2006: 3 publications 2007: 2 publications 2008: 5 publications 2009: 5 publications 2010: 4 publications 2011: 1 publication 2012: 5 publications 2013: 11 publications 2014: 10 publications 2015: 9 publications 2016: 12 publications 2017: 8 publications 2018: 12 publications 2019: 17 publications 2020: 10 publications 2021: 17 publications 2022: 15 publications 2023: 14 publications 2024: 14 publications 2025: 14 publications 2026: 2 publications
1995 2026

195 publications in total across all disciplines

View publications per year as a table
Rajnish Kumar: publications per year, 1995 to 2026
Year Publications
1995 1
1996 0
1997 0
1998 0
1999 0
2000 0
2001 0
2002 0
2003 0
2004 3
2005 1
2006 3
2007 2
2008 5
2009 5
2010 4
2011 1
2012 5
2013 11
2014 10
2015 9
2016 12
2017 8
2018 12
2019 17
2020 10
2021 17
2022 15
2023 14
2024 14
2025 14
2026 2
Total 195
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Rajnish Kumar 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 Rajnish Kumar 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, 141–160 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: 147 publications — 13th percentile

13% 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 1,218 147
161–180 1,350
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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Rajnish Kumar 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 Rajnish Kumar 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, 58–59 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: 58 D-Index — 42nd percentile

42% 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 58
60–61 882
62–63 834
64–65 731
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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Overview

Rajnish Kumar is affiliated with the Indian Institute of Technology Madras in India. Their research primarily spans the fields of Environmental Science and Engineering, with a significant focus on subfields such as Environmental Chemistry, Global and Planetary Change, Aerospace Engineering, Mechanics of Materials, and Environmental Engineering.

The scientist has contributed extensively to the study of various topics within these domains. Major areas of work include Methane Hydrates and Related Phenomena, Atmospheric and Environmental Gas Dynamics, Spacecraft and Cryogenic Technologies, Hydrocarbon Exploration and Reservoir Analysis, CO2 Sequestration and Geologic Interactions, Carbon Dioxide Capture Technologies, and Hybrid Renewable Energy Systems.

Rajnish Kumar's recent publications illustrate their research interests and scholarly output. Selected papers include:

  • Aerogels for water treatment: A review, 2021, Journal of Cleaner Production
  • Comprehensive Review on Exploration and Drilling Techniques for Natural Gas Hydrate Reservoirs, 2020, Energy & Fuels
  • Solidified Hydrogen Storage (Solid-HyStore) via Clathrate Hydrates, 2021, Chemical Engineering Journal
  • Gas Hydrate-Based Process for Desalination of Heavy Metal Ions from an Aqueous Solution: Kinetics and Rate of Recovery, 2020, ACS ES&T Water
  • Hydrothermal liquefaction of municipal solid wastes for high quality bio-crude production using glycerol as co-solvent, 2021, Bioresource Technology

Collaboration has been a notable aspect of their research career, with frequent co-authors including:

  • Jitendra S. Sangwai (17 collaborations)
  • Praveen Linga (15 collaborations)
  • Omkar Singh Kushwaha (13 collaborations)
  • Chandan Sahu (10 collaborations)
  • Gaurav Bhattacharjee (8 collaborations)

Their work has appeared repeatedly in several publication venues, among which the most frequent are:

  • Energy & Fuels (13 publications)
  • SSRN Electronic Journal (6 publications)
  • Industrial & Engineering Chemistry Research (5 publications)
  • ACS Engineering Au (4 publications)
  • Journal of Molecular Liquids (3 publications)

Best Publications

  • The clathrate hydrate process for post and pre-combustion capture of carbon dioxide.

    Praveen Linga;Rajnish Kumar;Peter Englezos

  • A review of the hydrate based gas separation (HBGS) process for carbon dioxide pre-combustion capture

    Ponnivalavan Babu;Praveen Linga;Rajnish Kumar;Peter Englezos

  • Synthesis of biodiesel in supercritical fluids

    Giridhar Madras;Chandana Kolluru;Rajnish Kumar

  • Gas hydrate formation from hydrogen/carbon dioxide and nitrogen/carbon dioxide gas mixtures

    Praveen Linga;Rajnish Kumar;Peter Englezos

  • Hydrogen storage in clathrate hydrates: Current state of the art and future directions

    Hari Prakash Veluswamy;Rajnish Kumar;Praveen Linga

  • Role of Surfactants in Promoting Gas Hydrate Formation

    Asheesh Kumar;Gaurav Bhattacharjee;B. D. Kulkarni;Rajnish Kumar

  • A new apparatus to enhance the rate of gas hydrate formation: Application to capture of carbon dioxide

    Praveen Linga;Rajnish Kumar;Rajnish Kumar;Ju Dong Lee;John Ripmeester

  • Rapid methane hydrate formation to develop a cost effective large scale energy storage system

    Hari Prakash Veluswamy;Alison Jia Hui Wong;Ponnivalavan Babu;Rajnish Kumar

  • Influence of contact medium and surfactants on carbon dioxide clathrate hydrate kinetics

    Asheesh Kumar;Tushar Sakpal;Praveen Linga;Rajnish Kumar

  • Pre-combustion capture of carbon dioxide in a fixed bed reactor using the clathrate hydrate process

    Ponnivalavan Babu;Rajnish Kumar;Praveen Linga

  • An innovative approach to enhance methane hydrate formation kinetics with leucine for energy storage application

    Hari Prakash Veluswamy;Asheesh Kumar;Rajnish Kumar;Praveen Linga

  • Capture of carbon dioxide from flue or fuel gas mixtures by clathrate crystallization in a silica gel column

    Adebola Adeyemo;Adebola Adeyemo;Rajnish Kumar;Rajnish Kumar;Praveen Linga;John Ripmeester

  • Enhanced clathrate hydrate formation kinetics at near ambient temperatures and moderate pressures: Application to natural gas storage

    Hari Prakash Veluswamy;Sharad Kumar;Rajnish Kumar;Pramoch Rangsunvigit

  • Structure and Kinetics of Gas Hydrates from Methane/Ethane/Propane Mixtures Relevant to the Design of Natural Gas Hydrate Storage and Transport Facilities

    Rajnish Kumar;Rajnish Kumar;Praveen Linga;Igor Moudrakovski;John A. Ripmeester

  • Incipient hydrate phase equilibrium for gas mixtures containing hydrogen, carbon dioxide and propane

    Rajnish Kumar;Hui-jie Wu;Peter Englezos

  • Structure and composition of CO2/H2 and CO2/H2/C3H8 hydrate in relation to simultaneous CO2 capture and H2 production

    Rajnish Kumar;Rajnish Kumar;Peter Englezos;Igor Moudrakovski;John A. Ripmeester

  • Carbon Dioxide Sequestration: Influence of Porous Media on Hydrate Formation Kinetics

    Gaurav Bhattacharjee;Asheesh Kumar;Tushar Sakpal;Rajnish Kumar

  • Unusual behavior of propane as a co-guest during hydrate formation in silica sand: Potential application to seawater desalination and carbon dioxide capture

    Ponnivalavan Babu;Rajnish Kumar;Praveen Linga

  • Effect of the amino acid l-histidine on methane hydrate growth kinetics

    Gaurav Bhattacharjee;Nilesh Choudhary;Asheesh Kumar;Suman Chakrabarty

  • HBGS (hydrate based gas separation) process for carbon dioxide capture employing an unstirred reactor with cyclopentane

    Leong Chuan Ho;Ponnivalavan Babu;Rajnish Kumar;Praveen Linga

  • Medium pressure hydrate based gas separation (HBGS) process for pre-combustion capture of carbon dioxide employing a novel fixed bed reactor

    Ponnivalavan Babu;Rajnish Kumar;Praveen Linga

Frequent Co-Authors

Praveen Linga
Praveen Linga National University of Singapore
Peter Englezos
Peter Englezos University of British Columbia
John A. Ripmeester
John A. Ripmeester National Research Council Canada
Jitendra S. Sangwai
Jitendra S. Sangwai Indian Institute of Technology Madras
Igor L. Moudrakovski
Igor L. Moudrakovski Max Planck Society
Giridhar Madras
Giridhar Madras Indian Institute of Technology Hyderabad
Swaranjit Singh Cameotra
Swaranjit Singh Cameotra Council of Scientific and Industrial Research
Jayant M. Modak
Jayant M. Modak Indian Institute of Science
Dennis D. Klug
Dennis D. Klug National Research Council Canada
Thalappil Pradeep
Thalappil Pradeep Indian Institute of Technology Madras

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