Class information for:
Level 1: AMMONIA SYNTHESIS//ENGN CHEM FERTILIZER CATALYST//AMMONIA SYNTHESIS CATALYST

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
1 4 PHYSICS, CONDENSED MATTER//PHYSICS, APPLIED//MATERIALS SCIENCE, MULTIDISCIPLINARY 2188495
10 3       JOURNAL OF CATALYSIS//CHEMISTRY, PHYSICAL//APPLIED CATALYSIS A-GENERAL 144576
3323 2             AMMONIA SYNTHESIS//AMMONIA DECOMPOSITION//AMMONIA ELECTRO OXIDATION 1931
12035 1                   AMMONIA SYNTHESIS//ENGN CHEM FERTILIZER CATALYST//AMMONIA SYNTHESIS CATALYST 964

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 AMMONIA SYNTHESIS authKW 4896436 23% 67% 225
2 ENGN CHEM FERTILIZER CATALYST address 270652 4% 20% 41
3 AMMONIA SYNTHESIS CATALYST authKW 232477 1% 89% 8
4 BARIUM PROMOTER authKW 200238 1% 88% 7
5 KG BO KOV CATALYSIS address 196154 1% 100% 6
6 INORGAN CHEM TECHNOL ENVIRONM ENGN address 142642 1% 36% 12
7 CHEM FERTILIZER CATALYSTS address 139480 1% 53% 8
8 FUSED IRON CATALYST authKW 133488 1% 58% 7
9 NANO MAGNESIA authKW 130769 0% 100% 4
10 RU GAMMA AL2O3 CATALYST authKW 130769 0% 100% 4

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Chemistry, Physical 9760 66% 0% 632
2 Engineering, Chemical 3486 26% 0% 249
3 Chemistry, Multidisciplinary 807 21% 0% 201
4 Chemistry, Applied 760 9% 0% 87
5 Physics, Atomic, Molecular & Chemical 99 5% 0% 51
6 Environmental Sciences 75 6% 0% 60
7 Nanoscience & Nanotechnology 59 4% 0% 36
8 Materials Science, Multidisciplinary 50 9% 0% 85
9 Physics, Condensed Matter 39 6% 0% 54
10 Materials Science, Coatings & Films 31 2% 0% 17

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ENGN CHEM FERTILIZER CATALYST 270652 4% 20% 41
2 KG BO KOV CATALYSIS 196154 1% 100% 6
3 INORGAN CHEM TECHNOL ENVIRONM ENGN 142642 1% 36% 12
4 CHEM FERTILIZER CATALYSTS 139480 1% 53% 8
5 ZHEJIANG HETEROGENEOUS CATALYSIS 106987 1% 55% 6
6 TECHNOL CHEM NIEORGANICZNEJ INZYNIERII SRO 69639 1% 30% 7
7 ATOM SCALE MAT PHYS 51447 2% 8% 20
8 225 32692 0% 100% 1
9 AMMONIAK OR 32692 0% 100% 1
10 CHEM EIZYCZNEJ 32692 0% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 JOURNAL OF CATALYSIS 26881 11% 1% 102
2 PRZEMYSL CHEMICZNY 13995 5% 1% 47
3 CATALYSIS LETTERS 11154 5% 1% 51
4 APPLIED CATALYSIS 10443 3% 1% 26
5 CHINESE JOURNAL OF CATALYSIS 10194 4% 1% 34
6 APPLIED CATALYSIS A-GENERAL 9666 6% 1% 59
7 TOPICS IN CATALYSIS 2831 2% 1% 16
8 CATALYSIS COMMUNICATIONS 2315 2% 0% 19
9 POLISH JOURNAL OF CHEMICAL TECHNOLOGY 1902 1% 1% 6
10 REACTION KINETICS AND CATALYSIS LETTERS 1885 2% 0% 17

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 AMMONIA SYNTHESIS 4896436 23% 67% 225 Search AMMONIA+SYNTHESIS Search AMMONIA+SYNTHESIS
2 AMMONIA SYNTHESIS CATALYST 232477 1% 89% 8 Search AMMONIA+SYNTHESIS+CATALYST Search AMMONIA+SYNTHESIS+CATALYST
3 BARIUM PROMOTER 200238 1% 88% 7 Search BARIUM+PROMOTER Search BARIUM+PROMOTER
4 FUSED IRON CATALYST 133488 1% 58% 7 Search FUSED+IRON+CATALYST Search FUSED+IRON+CATALYST
5 NANO MAGNESIA 130769 0% 100% 4 Search NANO+MAGNESIA Search NANO+MAGNESIA
6 RU GAMMA AL2O3 CATALYST 130769 0% 100% 4 Search RU+GAMMA+AL2O3+CATALYST Search RU+GAMMA+AL2O3+CATALYST
7 AMMONIA SYNTHESIS IRON CATALYST 98077 0% 100% 3 Search AMMONIA+SYNTHESIS+IRON+CATALYST Search AMMONIA+SYNTHESIS+IRON+CATALYST
8 BARIUM AND CERIUM PROMOTERS 98077 0% 100% 3 Search BARIUM+AND+CERIUM+PROMOTERS Search BARIUM+AND+CERIUM+PROMOTERS
9 BARIUM DOPED NANO MAGNESIA 98077 0% 100% 3 Search BARIUM+DOPED+NANO+MAGNESIA Search BARIUM+DOPED+NANO+MAGNESIA
10 CATALYTIC COOPERATION 98077 0% 100% 3 Search CATALYTIC+COOPERATION Search CATALYTIC+COOPERATION

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 1


rank cluster_id2 link
1 17474 AMMONIA DECOMPOSITION//AMMONIA ELECTRO OXIDATION//AMMONIA ELECTROLYSIS
2 25245 CATALYT SCI TECHNOL//NI PT111//SUNCAT INTER E SCI CATALYSIS
3 22177 OXYGEN TRANSIENTS//ADSORPTION ON METAL SURFACES//COPPERI NITRIDE
4 24240 ELECTROCHEMICAL SYNTHESIS OF AMMONIA//FUNDAMENTAL ENERGY SCI//NITRIDE ION
5 37740 NICKEL DISPERSION//HYDROGEN ON NICKEL//NICKEL ALUMINA CATALYSTS
6 24536 CYCLOHEXENE//BENZENE SELECTIVE HYDROGENATION//ENVIRONM CATALYT ENGN
7 27598 REACT DYNAM GRP//ULTRA DENSE DEUTERIUM//RYDBERG MATTER
8 4733 SURFACE SCIENCE//HYDROGEN MOLECULE//KINETICS OF ADATOM RECOMBINATION
9 8472 C 2 OXYGENATES//CO HYDROGENATION//JOURNAL OF CATALYSIS
10 10047 ALKALI METALS//SURFACE SCIENCE//SUBSTITUTIONAL ADSORPTION

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