Probing the Brønsted and Lewis acidity of zeolite HY: A ¹H/²⁷Al and ¹⁵N/²⁷Al TRAPDOR NMR study of monomethylamine adsorbed on HY

Chemical Compounds

• 1H MAS NMR 18%
• 27Al MAS NMR 17%
• Acid 9%
• Adsorption 6%
• Aluminium Atom 34%
• Calcination 11%
• Cation 7%
• Chemical Shift 10%
• Compound Mobility 10%
• Deprotonation 12%
• Hydroxide 21%
• Lewis Acid 47%
• Proton 8%
• Proton Transfer 23%
• Quadrupole Coupling 50%
• Reduction 5%
• Resonance 31%
• Silanols 16%
• Transfer of Populations in Double Resonance NMR 100%
• Transfer Reaction 24%
• Zeolite 39%

Engineering & Materials Science

• Acidity 72%
• Acids 47%
• Adsorption 6%
• Aluminum 10%
• Aluminum hydroxide 19%
• Atoms 13%
• Calcination 8%
• Chemical shift 11%
• Deprotonation 13%
• Nuclear magnetic resonance 63%
• Positive ions 8%
• Proton transfer 23%
• Protons 7%
• Temperature 7%
• Zeolites 63%

Physics & Astronomy

• acidity 72%
• acids 47%
• adsorption 5%
• aluminum 17%
• ambient temperature 6%
• atoms 6%
• cations 5%
• chemical equilibrium 6%
• hydroxides 14%
• nuclear magnetic resonance 41%
• proton resonance 9%
• protons 8%
• quadrupoles 16%
• roasting 7%
• zeolites 59%