Chemistry A-Level
Role of catalysts and carriers
What Role of catalysts and carriers means in Chemistry A-Level, as defined for OCR.
Definition of Role of catalysts and carriers
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Reference: OCR
A halogen carrier such as FeBr₃ or AlCl₃ is required in halogenation to generate the electrophile, while nitration uses concentrated HNO₃ and concentrated H₂SO₄ to generate NO₂⁺.
Topics that use Role of catalysts and carriers
- Aromatic compounds (OCR A-Level)
Related terms
- Activating and 2,4-directing effect of the –OH group
- Bond lengths in benzene
- Carbon–carbon bond formation in synthesis
- Comparison with carboxylic acids and the carbonate test
- Delocalised π system and electron density
- Delocalised π system in benzene
- Directing effects
- Directing effects of OH, NH₂ and NO₂
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