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” Other ” tecniques in preperative chemistry

” Other ” tecniques in preperative chemistry. Theis Brock-Nannestad Department of Chemistry. Agenda. Pressure High pressure Gasses Autoclaves Bomb-tubes Catalytic hydrogenation Reactions Litterature Low pressure Pumps Measurement Errors

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” Other ” tecniques in preperative chemistry

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  1. Department of Chemistry ”Other” tecniques in preperative chemistry Theis Brock-Nannestad Department of Chemistry

  2. Department of Chemistry Agenda Pressure High pressure Gasses Autoclaves Bomb-tubes Catalytic hydrogenation Reactions Litterature Low pressure Pumps Measurement Errors Uses

  3. Department of Chemistry Compressed gasses Safe handling Pressure regulation Errors in Oxygen Helium Acetylene Liquid gasses Fire

  4. Department of Chemistry Autoclaves Rules for using Volume and filling Maximum pressure Maximum working temperature Selection of gaskets Valves Flushing Pressure ratings Care and feeding

  5. Department of Chemistry Bomb tube • Why? • Selection of material (glass or Quartz • Pumping and sealing • Containment • Opening of • Types of experiments • Alternatives

  6. Department of Chemistry Catalytic hydrogenation – a very useful tool • Types of reactions • Reduction of functional groups • Nitro to amine • Carboxylate to alcohol • Aromatic systems • Pressure ranges • Selection of catalysts • Litterature Nishimura • Patents • Other

  7. Department of Chemistry Low pressures – mostly for destillation/sublimation • Pressure ranges • Pump technologies • Flow consideration • Measurement techiques • Errors • Examples: Kugelrohr destillation

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