| First letter | Keywords | Number |
|---|
| 0-9 | 3D printing (2), 3D bioprinting (2), 3DIC (1), 2,2'-bipyridine (1), 3D Convolutional Neural Network (3D CNN) (1), 3D protein immobilization (1) etc. | 11 |  |
|---|
| A | Adsorption (10), Active matter (4), Amine (3), Air separation (3), AI (3), absorption (3) etc. | 163 | |
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| B | Biomass (6), Bubble rise motion (2), Bioethanol (2), Biopharmaceuticals (2), Biodegradable polymer (2), Biomass valorization (1) etc. | 92 | |
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| C-CH | Catalyst (11), Carbon dioxide (8), CFD (8), carbon nanotube (4), Chemical Recycling (3), Cellulose (3) etc. | 157 | |
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| CI-CZ | CO2 capture (11), Crystallization (11), CO2 electrolysis (6), coating (3), CO2 (3), CO2 absorption (3) etc. | 187 | |
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| D | Deep eutectic solvent (12), direct air capture (8), Drying (6), Drop-in fuel (5), Degradation (4), Drug delivery system (3) etc. | 150 | |
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| E | emulsion (8), Extraction (6), Electrodialysis (4), Electrolysis (4), Electrocatalyst (4), Electrochemical CO2 Reduction (3) etc. | 133 | |
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| F | Flame spray pyrolysis (4), fuel cell (4), Fine Bubble (4), Fluidized bed (4), Freezing (3), Fischer-Tropsch synthesis (3) etc. | 121 | |
|---|
| G | Gasification (4), Gold (4), Gas sensor (3), gold nanoparticle (3), gas separation (3), gold nanoparticles (3) etc. | 81 | |
|---|
| H | Hydrogen production (16), Hydrogen (7), hydrogel (7), HSP (3), Hydrogen evolution reaction (3), Hydrolysis (3) etc. | 140 | |
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| I | Interfacial polymerization (10), Ionic liquid (6), Interface (4), Image analysis (2), Iron (2), ionic liquids (2) etc. | 96 | |
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| J | Janus particle (2), Japanese Traditional Company (1), jam (1) | 4 | |
|---|
| K | kinetics (2), Komagataella phaffii (1), Kinetic Analysis (1), Kinetic analysis of hydrodefluorination (1), K promotion (1), kinetic model (1) etc. | 7 | |
|---|
| L | Liposome (4), Lithium-ion battery (4), Liquid-Liquid Phase Separation (3), lipid assembly (3), Liquid Crystal (3), LLM (3) etc. | 97 | |
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| M-MH | Machine learning (31), Metal-organic frameworks (15), Methanation (8), Metal-organic framework (6), membrane (6), Membrane Separation (4) etc. | 166 | |
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| MI-MZ | mixing (9), MOF (5), Microwave (4), molecular dynamics (4), Microcapsule (3), Microwave heating (3) etc. | 114 | |
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| N | Numerical Simulation (5), Nickel (3), nanoparticle (3), Ni catalyst (3), nanoparticles (3), nanofiber (3) etc. | 81 | |
|---|
| O | Organic solvent nanofiltration (5), Organic solvent reverse osmosis (5), Oxygen-enriched air (2), Organosilica membrane (2), Optical measurement (2), Oxidation (2) etc. | 65 | |
|---|
| P-PH | Peptide (8), PFAS (7), Photocatalyst (6), pervaporation (4), Phase Equilibria (3), PEM water electrolysis (3) etc. | 115 | |
|---|
| PI-PZ | Process simulation (6), Polymer electrolyte fuel cell (5), Plant oil deoxygenation (5), Polyamide membrane (5), Process design (4), Protein (4) etc. | 182 | |
|---|
| Q | QCM (2), quartz crystal microbalance (2), Quantitative Evaluation (1), Quality management (1), quality (1), Quantum Sieving (1) etc. | 9 | |
|---|
| R | Recycling (4), rheology (3), Rare earth (2), Renewable energy (2), Reverse osmosis (2), Redox (2) etc. | 73 | |
|---|
| S-SO | simulation (7), Self-assembly (6), silica (4), Separation (4), Solid oxide fuel cell (3), solid catalyst (3) etc. | 136 | |
|---|
| SP-SZ | Surfactant (7), Startup (6), Structured catalyst (4), supercritical carbon dioxide (4), Surface modification (4), supercritical water (4) etc. | 134 | |
|---|
| T | thermal conductivity (3), Transdermal delivery (3), Taylor-Couette Flow (3), Transfer learning (3), Two-phase flow (2), Titanium oxide (2) etc. | 73 | |
|---|
| U | Upcycling (5), Ultrafine Bubble (4), Ultrasound (2), UiO-66 (2), Underwater superoleophobicity (1), upcycling technology (1) etc. | 29 | |
|---|
| V | Viscosity (6), Viscoelastic fluid (4), Viscoelasticity (2), Value Chain (2), Vapor-liquid equilibria (2), vertical vibration (1) etc. | 37 | |
|---|
| W | Woody biomass (8), Water electrolysis (4), Waste plastics (3), Water treatment (2), Water electrolyzer (2), wet synthesis (1) etc. | 42 | |
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| X | X-type zeolite membrane (1), X-ray CT (1), XPS analysis (1) | 3 | |
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| Y | YSZ (1), Yeast promoter engineering (1) | 2 | |
|---|
| Z | Zeolite (10), Zwitterionic Polymer (2), zero-emission model (1), zeolite membrane (1), ZnO (1), Zwitterion (1) etc. | 30 | |
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| 非英数字 | * (3) | 3 | |
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