Question:
Which is/are the thermodynamic inhibitor(s) for natural gas hydrate?
Which is/are the thermodynamic inhibitor(s) for natural gas hydrate?
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Remember: Salts (like NaCl) and glycols (like ethylene glycol, methanol) are classical thermodynamic inhibitors of gas hydrate formation.
Updated On: Aug 29, 2025
- Tetrahydrofuran
- Sodium chloride
- Ethylene glycol
- Tetra n-butyl ammonium bromide
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The Correct Option is B
Solution and Explanation
- Thermodynamic inhibitors are chemicals that shift the hydrate equilibrium curve by lowering the water activity, thereby requiring lower temperature or higher pressure for hydrate formation.
- Common thermodynamic inhibitors are salts (e.g., sodium chloride) and alcohols/glycols (e.g., ethylene glycol, methanol).
- Tetrahydrofuran (THF) is not an inhibitor but actually a hydrate former used in laboratory studies.
- Tetra n-butyl ammonium bromide is a quaternary ammonium salt that forms semi-clathrate hydrates; it is not used as a thermodynamic inhibitor.
Thus, the correct thermodynamic inhibitors are (B) and (C).
- Common thermodynamic inhibitors are salts (e.g., sodium chloride) and alcohols/glycols (e.g., ethylene glycol, methanol).
- Tetrahydrofuran (THF) is not an inhibitor but actually a hydrate former used in laboratory studies.
- Tetra n-butyl ammonium bromide is a quaternary ammonium salt that forms semi-clathrate hydrates; it is not used as a thermodynamic inhibitor.
Thus, the correct thermodynamic inhibitors are (B) and (C).
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