Science Explorer Interactive view Map
Topic · Catalysis

Ammonia Synthesis and Nitrogen Reduction

Ammonia Synthesis and Nitrogen Reduction is a research topic within Catalysis. Science Explorer counts 29k research works in it since 1950. 20.2% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the advances in electrocatalysts and catalytic processes for ammonia synthesis, particularly under ambient conditions and using renewable energy sources. It explores topics such as nitrogen reduction, artificial nitrogen fixation, electrochemical synthesis, and the potential of using ammonia for hydrogen storage.

  • Ammonia Synthesis
  • Electrocatalysts
  • Nitrogen Reduction
  • Ambient Conditions
  • Catalysis
  • Renewable Energy
  • Artificial Nitrogen Fixation
  • Electrochemical Synthesis
  • Hydrogen Storage
  • Nanocatalysts
Research works
29k
fractional, since 1950
In the world top 10%
6k
per year above
Top-10% rate
20.2%
share of its works in the world top 10%
Growth, 2013–17 → 2018–22
+74%
the tick is no change

Which countries lead Ammonia Synthesis and Nitrogen Reduction research?

By volume, China and the United States publish the most (4.8k and 640 works in 2022–2025).

By volume, 2022–2025

  1. 1 China 4.8k works
  2. 2 United States 640 works
  3. 3 India 406 works
  4. 4 South Korea 302 works
  5. 5 Japan 274 works
  6. 6 Germany 243 works
  7. 7 Australia 175 works
  8. 8 United Kingdom 158 works
  9. 9 France 132 works
  10. 10 Spain 106 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

China: 66.3%United States: 8.9%India: 5.6%South Korea: 4.2%6 others listed: 15.1%66%largest
China4,788 · 66.3%United States640 · 8.9%India406 · 5.6%South Korea302 · 4.2%6 others listed1,089 · 15.1%

Shares of the rows listed above, not of the whole node.

Which institutions lead Ammonia Synthesis and Nitrogen Reduction research?

By volume in 2022–2025, Chinese Academy of Sciences publishes the most Ammonia Synthesis and Nitrogen Reduction research, followed by Tianjin University and University of Chinese Academy of Sciences.

By volume, 2022–2025

  1. 1 Chinese Academy of SciencesChina 124 works
  2. 2 Tianjin UniversityChina 78 works
  3. 3 University of Chinese Academy of SciencesChina 67 works
  4. 4 Tsinghua UniversityChina 65 works
  5. 5 University of Science and Technology of ChinaChina 57 works
  6. 6 Fuzhou UniversityChina 57 works
  7. 7 Xi'an Jiaotong UniversityChina 56 works
  8. 8 Harbin Institute of TechnologyChina 55 works
  9. 9 Nankai UniversityChina 54 works
  10. 10 Jilin UniversityChina 52 works

Who are the leading researchers in Ammonia Synthesis and Nitrogen Reduction?

The most-cited researchers publishing on Ammonia Synthesis and Nitrogen Reduction include Michaël Grätzel, Jens K. Nørskov and Donald G. Truhlar.

  1. 1 Michaël Grätzel Switzerland 13k citations
  2. 2 Jens K. Nørskov Denmark 9.8k citations
  3. 3 Donald G. Truhlar United States 8.4k citations
  4. 4 İbrahim Dinçer Canada 5.9k citations
  5. 5 Thomas F. Jaramillo United States 5.5k citations
  6. 6 Huan Liu Australia 4.9k citations
  7. 7 Zhanhu Guo United States 4.4k citations
  8. 8 Avelino Corma Spain 4.4k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

Where is Ammonia Synthesis and Nitrogen Reduction research done?

The largest centres of Ammonia Synthesis and Nitrogen Reduction research in 2022–2025 are Beijing (China), Shanghai (China), Nanjing (China) and Tianjin (China). Among places with at least 20 works in it, it is an unusually large share of all research in Ma'anshan City.

Largest cities, 2022–2025

  1. 1 Beijing China 771 works
  2. 2 Shanghai China 276 works
  3. 3 Nanjing China 224 works
  4. 4 Tianjin China 224 works
  5. 5 Xi'an China 182 works
  6. 6 Hangzhou China 172 works
  7. 7 Chengdu China 157 works
  8. 8 Wuhan China 150 works
  9. 9 Hefei China 136 works
  10. 10 Qingdao China 125 works

Where it is the local speciality

  1. Ma'anshan CityCN · 21.4 works14×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Ammonia Synthesis and Nitrogen Reduction than the world average.

See Ammonia Synthesis and Nitrogen Reduction on the map

Where is the best place to study Ammonia Synthesis and Nitrogen Reduction?

Among universities, judged by research, Tianjin University, Lanzhou Jiaotong University and Qingdao University of Science and Technology score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%mean 30.07%fractional works in this node (log) →share in the world top 10% →Tianjin University: 78, 28.9%Lanzhou Jiaotong University: 30, 41.5%Qingdao University of Science and Technology: 43, 17.2%Beijing University of Chemical Technology: 48, 25.6%Nankai University: 54, 27.8%City University of Hong Kong: 31, 37.3%Inner Mongolia University: 24, 30.3%Chengdu University: 17, 34.6%Ulsan National Institute of Science and Technology: 13, 33.8%University of Chinese Academy of Sciences: 67, 23.7%Lanzhou Jiaotong Uni…Tianjin UniversityBeijing University o…Qingdao University o…
above the meannear itbelow it

One dot per university in the table below. The upper left is the interesting corner: small places doing unusually strong work.

#UniversityScoreTop 10%SpecialisationWorksGrowth
1 Tianjin UniversityChina 69.528.9%7.8×78 +343.1%
2 Lanzhou Jiaotong UniversityChina 66.041.5%15.4×30 —
3 Qingdao University of Science and TechnologyChina 63.217.2%13.9×43 +207.1%
4 Beijing University of Chemical TechnologyChina 61.425.6%13.1×48 +66.2%
5 Nankai UniversityChina 59.327.8%9.7×54 -2.1%
6 City University of Hong KongHong Kong 58.637.3%6.4×31 +13.4%
7 Inner Mongolia UniversityChina 57.930.3%12.8×24 —
8 Chengdu UniversityChina 57.634.6%9.6×17 —
9 Ulsan National Institute of Science and TechnologySouth Korea 57.233.8%10.1×13 —
10 University of Chinese Academy of SciencesChina 56.823.7%4.8×67 +192.5%

Universities only. Score blends excellence (30%), specialisation (25%), size (20%), growth (15%) and international reach (10%), 2015–2022; growth compares 2010–14 with 2015–19.

Is Ammonia Synthesis and Nitrogen Reduction research growing?

Output in 2018–2022 was 74% higher than in 2013–2017, peaking in 2025. The fastest-growing topics are Ammonia Synthesis and Nitrogen Reduction.

19801990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.