Science Explorer Interactive view Map
Topic · Geochemistry and Petrology

Coal and Its By-products

Coal and Its By-products is a research topic within Geochemistry and Petrology. Science Explorer counts 17k research works in it since 1950. 22.3% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the geochemistry, utilization, and environmental impact of coal and its byproducts. It covers topics such as trace elements in coal, fly ash characterization, rare earth elements recovery, alumina extraction, phytoremediation of coal ash disposal sites, and the distribution of heavy metals.

  • Coal Geochemistry
  • Trace Elements
  • Fly Ash
  • Rare Earth Elements
  • Mineralogy
  • Environmental Impact
  • Alumina Recovery
  • Phytoremediation
  • Heavy Metals
  • Element Distribution
Research works
17k
fractional, since 1950
In the world top 10%
3.8k
per year above
Top-10% rate
22.3%
share of its works in the world top 10%
Growth, 2013–17 → 2018–22
+40%
the tick is no change

Which countries lead Coal and Its By-products research?

By volume, China and India publish the most (1.7k and 302 works in 2022–2025).

By volume, 2022–2025

  1. 1 China 1.7k works
  2. 2 India 302 works
  3. 3 United States 243 works
  4. 4 Russia 155 works
  5. 5 Indonesia 127 works
  6. 6 Poland 105 works
  7. 7 Australia 56 works
  8. 8 South Korea 51 works
  9. 9 Japan 50 works
  10. 10 Brazil 48 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: 59.7%India: 10.7%United States: 8.6%Russia: 5.5%6 others listed: 15.5%60%largest
China1,688 · 59.7%India302 · 10.7%United States243 · 8.6%Russia155 · 5.5%6 others listed439 · 15.5%

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

Which institutions lead Coal and Its By-products research?

By volume in 2022–2025, China University of Mining and Technology publishes the most Coal and Its By-products research, followed by Central South University and Huazhong University of Science and Technology.

By volume, 2022–2025

  1. 1 China University of Mining and TechnologyChina 136 works
  2. 2 Central South UniversityChina 37 works
  3. 3 Huazhong University of Science and TechnologyChina 34 works
  4. 4 Taiyuan University of TechnologyChina 32 works
  5. 5 Chinese Academy of SciencesChina 29 works
  6. 6 University of Science and Technology BeijingChina 28 works
  7. 7 Xi'an Jiaotong UniversityChina 23 works
  8. 8 Xi'an University of Science and TechnologyChina 23 works
  9. 9 Anhui University of Science and TechnologyChina 21 works
  10. 10 Kunming University of Science and TechnologyChina 20 works

Who are the leading researchers in Coal and Its By-products?

The most-cited researchers publishing on Coal and Its By-products include Yong Sik Ok.

  1. 1 Yong Sik Ok South Korea 3.3k citations

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

Where is Coal and Its By-products research done?

The largest centres of Coal and Its By-products research in 2022–2025 are Beijing (China), Xuzhou (China), Xi'an (China) and Wuhan (China). Among places with at least 20 works in it, it is an unusually large share of all research in Xuzhou, Huainan and Taiyuan.

Largest cities, 2022–2025

  1. 1 Beijing China 311 works
  2. 2 Xuzhou China 139 works
  3. 3 Xi'an China 80 works
  4. 4 Wuhan China 79 works
  5. 5 Nanjing China 74 works
  6. 6 Taiyuan China 70 works
  7. 7 Changsha China 56 works
  8. 8 Shanghai China 52 works
  9. 9 Hangzhou China 46 works
  10. 10 Guangzhou China 43 works

Where it is the local speciality

  1. XuzhouCN · 139.3 works42×
  2. HuainanCN · 24.8 works23×
  3. TaiyuanCN · 69.7 works11×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Coal and Its By-products than the world average.

See Coal and Its By-products on the map

Where is the best place to study Coal and Its By-products?

Among universities, judged by research, China University of Mining and Technology, University of Science and Technology Beijing and Xi'an 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%60%mean 33.56%fractional works in this node (log) →share in the world top 10% →China University of Mining and Technology: 136, 33.4%University of Science and Technology Beijing: 28, 37.2%Xi'an University of Science and Technology: 23, 48.9%Taiyuan University of Technology: 32, 29.2%Indian Institute of Technology Dhanbad: 10, 34.7%Shanxi University: 14, 35.2%Henan Polytechnic University: 14, 43.3%Shandong University of Science and Technology: 19, 31.0%AGH University of Krakow: 13, 17.5%Central South University: 37, 25.2%Xi'an University of …University of Scienc…China University of …Taiyuan 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 China University of Mining and TechnologyChina 75.333.4%47.5×136 +81.0%
2 University of Science and Technology BeijingChina 71.837.2%9.8×28 +176.5%
3 Xi'an University of Science and TechnologyChina 65.048.9%27.5×23 -16.9%
4 Taiyuan University of TechnologyChina 64.729.2%21.5×32 +124.0%
5 Indian Institute of Technology DhanbadIndia 64.634.7%13.3×10 +383.1%
6 Shanxi UniversityChina 62.335.2%15.2×14 +110.7%
7 Henan Polytechnic UniversityChina 60.343.3%13.9×14 +13.7%
8 Shandong University of Science and TechnologyChina 58.431.0%10.5×19 +66.0%
9 AGH University of KrakowPoland 58.017.5%9.2×13 +208.8%
10 Central South UniversityChina 52.625.2%6.2×37 +116.6%

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 Coal and Its By-products research growing?

Output in 2018–2022 was 40% higher than in 2013–2017, peaking in 2024. The fastest-growing topics are Coal and Its By-products.

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.