| First letter | Keywords | Number |
|---|
| 0-9 | 25th anniversary (2), 2,5-furandicarboxylic acid (1), 2D Ising model (1), 5-(hydroxymethyl)furfural (1), 3D printing (1), 1,3-PDO (1) etc. | 9 |  |
|---|
| A | Adsorption (14), antibody (4), ALD (4), Ammonia (4), Absorption (4), Atomic Layer Deposition (4) etc. | 195 | |
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| B | Biomass (6), Bubble dynamics (4), biomanufacturing (3), bicellar mixtures (2), Bio-oil upgrading (2), Biomaterial (2) etc. | 108 | |
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| C-CH | CFD (8), Carbon Neutral (7), CCU (6), Catalyst (6), carbon nanotube (6), carbon dioxide (5) etc. | 171 | |
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| CI-CZ | Crystallization (10), CO2 (10), CO2 separation (5), CO2 capture (5), CO2 electroreduction (3), CVD (3) etc. | 181 | |
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| D | deep eutectic solvent (9), Drying (4), dewatering (3), dispersion (3), Discrete Element Method (3), deep eutectic solvents (3) etc. | 145 | |
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| E | electrocatalyst (9), Extraction (8), electrocatalysts (4), emulsion (4), Enzyme (3), Ethanol (2) etc. | 117 | |
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| F | fluidized bed (7), Fuel cell (7), Flame spray pyrolysis (4), freeze drying (3), Fouling (3), Fine bubbles (2) etc. | 98 | |
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| G | gas separation (4), gas diffusion layer (3), Green ammonia (3), Gold (3), graft polymerization (3), gold extraction (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), Inhibitor (2) etc. | 76 | |
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| J | Japanese Company (1), Janus multifunctional nanofiber (1), Jump test (1), juvenile hormone (1) | 4 | |
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| K | kinetic analysis (2), kinetic reaction model (1), Korteweg force (1), Kinetic TSA separation (1), kappa-carrageenan (1), KMC (1) etc. | 12 | |
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| L | Lithium-ion battery (5), liposome (4), Lignin (3), Liquid-liquid equilibria (3), Life cycle assessment (3), liposomes (3) etc. | 93 | |
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| M-MH | Machine Learning (26), Membrane (15), Metal-organic frameworks (7), Methanation (6), Membrane separation (6), metal-organic framework (4) etc. | 161 | |
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| MI-MZ | mixing (10), Molecular dynamics (9), microwave (5), Molecularly Imprinted Polymer (3), molecular dynamics simulation (3), monolith (3) etc. | 127 | |
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| N | Nanoparticles (7), Nucleation (5), nanoparticle (5), numerical simulation (5), nanofiltration (3), Neural network potential (2) etc. | 80 | |
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| O | organic solvent nanofiltration (4), Oxygen Reduction Reaction (3), Optimization (3), osmotic pressure (3), Oxygen-enriched air (2), Oxygen Enrichment Function (1) etc. | 54 | |
|---|
| P-PH | PFAS (6), PEFC (6), peptide (5), pervaporation (3), Permeability (3), PECVD (2) etc. | 97 | |
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| PI-PZ | polymer electrolyte fuel cell (6), polymer (6), polyelectrolyte complex (4), plasma (4), Powder compaction (3), precious metals (3) etc. | 173 | |
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| Q | quantum computer (1), quantum computing (1), quasi-solid (1), QCM (1), questionnaire survey (1), Quartz Crystal Microbalance (1) etc. | 7 | |
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| R | Rheology (4), residence time distribution (3), Recycling (3), Reactive crystallization (3), Redox (3), Risk assessment (3) etc. | 81 | |
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| S-SO | separation (8), Solvent extraction (7), silica (5), Solubility (5), Simulation (4), slurry (3) etc. | 144 | |
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| SP-SZ | supercritical carbon dioxide (7), Startup (7), Supercritical CO2 (5), surface modification (4), Supercritical water (4), Surface treatment (3) etc. | 101 | |
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| T | Transdermal drug delivery (4), Thermal energy storage (4), transdermal delivery (4), titanium dioxide (2), Transdermal (2), Thermoresponsive polymer (2) etc. | 79 | |
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| U | Ultrasound (3), Upcycling (2), Unit operation (1), Ultrafiltration (1), UBE (1), University-Industry Collaboration (1) etc. | 22 | |
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| V | vaccine (5), viscosity (4), Voluntary Approach of Chemical Substances (1), Vancomycin (1), Visible-light photocatalyst (1), Visible light irradiation (1) etc. | 30 | |
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| W | Water Treatment (2), Women's Empowerment (2), Wastewater treatment (2), wettability (2), Wound healing (2), Water electrolysis (2) etc. | 36 | |
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| X | xylose (2), xylitol (1), XANES/ELNES (1), X-ray CT imaging (1) | 5 | |
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| Y | Yttrium doping (1), Yoshino cypress (1) | 2 | |
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| Z | zeolite (11), zwitterionic polymer (1), Zinc (1), Zeolites (1), Zirconia based catalyst (1), Zn-air battery (1) etc. | 29 | |
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| 非英数字 | * (5), precision medicine (1) | 6 | |
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