| First letter | Keywords | Number |
|---|
| 0-9 | 25th anniversary (2), 1,3-PDO (1), 5-(hydroxymethyl)furfural (1), 2D Ising model (1), 13C-Metabolic flux analysis (1), 3D printing (1) etc. | 9 |  |
|---|
| A | Adsorption (14), antibody (4), ALD (4), Activated carbon (4), Absorption (4), Atomic Layer Deposition (4) etc. | 195 | |
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| B | Biomass (6), Bubble dynamics (4), Biomanufacturing (3), biogas (2), bicellar mixtures (2), Biological system (2) etc. | 108 | |
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| C-CH | CFD (8), Carbon Neutral (7), Catalyst (6), carbon nanotube (6), CCU (6), carbon dioxide (5) etc. | 171 | |
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| CI-CZ | CO2 (10), Crystallization (10), CO2 separation (5), CO2 capture (5), CVD (3), CO2 Electroreduction (3) etc. | 181 | |
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| D | deep eutectic solvent (9), Drying (4), dewatering (3), deep eutectic solvents (3), Dispersion (3), Degradation (3) etc. | 145 | |
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| E | electrocatalyst (9), Extraction (8), emulsion (4), electrocatalysts (4), Enzyme (3), ethanol (2) etc. | 117 | |
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| F | Fuel cell (7), fluidized bed (7), Flame spray pyrolysis (4), freeze drying (3), Fouling (3), fluoride ion (2) etc. | 98 | |
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| G | gas separation (4), Gas diffusion layer (3), green ammonia (3), Gold (3), graft polymerization (3), Glycan (2) etc. | 68 | |
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| H | Hydrogen (9), hydrogel (8), Hydrothermal (6), Hydrogen peroxide (5), Hydrothermal Treatment (4), hydrothermal synthesis (3) etc. | 138 | |
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| I | ionic liquid (7), Interfacial polymerization (5), Image analysis (3), Immobilized catalyst (2), Induction Heating Mixing Impeller (2), Innovation (2) etc. | 76 | |
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| J | Jump test (1), juvenile hormone (1), Japanese Company (1), Janus multifunctional nanofiber (1) | 4 | |
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| K | kinetic analysis (2), Kinetic TSA separation (1), Kinetics analysis (1), kinetic model (1), kLa (1), Kinetic Modeling (1) etc. | 12 | |
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| L | Lithium-ion battery (5), liposome (4), Liquid-liquid equilibria (3), liposomes (3), Lignin (3), Life cycle assessment (3) etc. | 93 | |
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| M-MH | Machine Learning (26), Membrane (15), Metal-organic frameworks (7), Membrane separation (6), Methanation (6), metal-organic framework (4) etc. | 161 | |
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| MI-MZ | mixing (10), molecular dynamics (9), microwave (5), molecular dynamics simulation (3), microcapsule (3), MOF (3) etc. | 127 | |
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| N | Nanoparticles (7), nanoparticle (5), numerical simulation (5), Nucleation (5), nanofiltration (3), Nitrous oxide (2) etc. | 80 | |
|---|
| O | organic solvent nanofiltration (4), Oxygen Reduction Reaction (3), osmotic pressure (3), Optimization (3), Oxygen-enriched air (2), Oscillatory baffled reactor (1) etc. | 54 | |
|---|
| P-PH | PFAS (6), PEFC (6), peptide (5), pervaporation (3), Permeability (3), PET (2) etc. | 97 | |
|---|
| PI-PZ | polymer (6), polymer electrolyte fuel cell (6), Plasma (4), polyelectrolyte complex (4), precious metals (3), proton conductor (3) etc. | 173 | |
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| Q | quasi-solid (1), questionnaire survey (1), QCM (1), quantum computer (1), quantum computing (1), Quartz Crystal Microbalance (1) etc. | 7 | |
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| R | rheology (4), Recycling (3), Risk assessment (3), Redox (3), residence time distribution (3), Reactive crystallization (3) etc. | 81 | |
|---|
| S-SO | separation (8), solvent extraction (7), Solubility (5), Silica (5), Simulation (4), slurry (3) etc. | 144 | |
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| SP-SZ | supercritical carbon dioxide (7), Startup (7), Supercritical CO2 (5), Supercritical water (4), surface modification (4), Surface treatment (3) etc. | 101 | |
|---|
| T | Transdermal drug delivery (4), transdermal delivery (4), Thermal Energy Storage (4), thermal plasma (2), Thermoresponsive polymer (2), temperature (2) etc. | 79 | |
|---|
| U | Ultrasound (3), Upcycling (2), Ultrafine bubble (1), Unit operation (1), Urea Oxidation Reaction (UOR) (1), Unsaturated fatty acids (1) etc. | 22 | |
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| V | Vaccine (5), viscosity (4), vapor permeation (1), Voluntary Approach of Chemical Substances (1), Visible-light photocatalyst (1), Vibrated fluidized bed (1) etc. | 30 | |
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| W | water treatment (2), water electrolysis (2), wound healing (2), Women's Empowerment (2), wettability (2), wastewater treatment (2) etc. | 36 | |
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| X | xylose (2), X-ray CT imaging (1), XANES/ELNES (1), xylitol (1) | 5 | |
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| Y | Yttrium doping (1), Yoshino cypress (1) | 2 | |
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| Z | Zeolite (11), zeolite-templated carbon (1), ZSM-5 zeolite membrane (1), zwitterionic polymer (1), Zeta Potential (1), Zeolites (1) etc. | 29 | |
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| 非英数字 | * (5), precision medicine (1) | 6 | |
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