what does copper at 573 k do mainly ?

Alcohols are oxidised by passing their vapours over hot copper at 573K. Primary alcohol (1o) undergo dehydrogenation to give aldehyde, secondary alcohol (2o) undergo dehydrogenation to give  ketone and tertiary alcohol (3o) undergo dehydration to give alkene.

For example ,

  • Ethanol is oxidised to Ethanal.

                    Cu/573K

  CH3CH2OH ------------->  CH3CHO + H2

  (1o alcohol)

  • Propan-2-ol is oxidised to Propanone.

                              Cu/573K

  CH3 - CH(OH)-CH3 ------------->  CH3 - CO-CH3 + H2

  (2o alcohol)

  • 2-Methylpropan-2-ol is oxidised to 2-methylpropene.

                             Cu/573K

CH3 – C(CH3)2-OH   -------------> CH3 – (CH3)C=CH2 + H2O

  (3o alcohol)

 

 

 

  • 63

can reduce aldehyde/ketone to alcohol

  • -24
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