Alcohols Phenols and Ethers - Result Question 19

####19. Methanol is industrially prepared by [1992]

(a) Oxidation of CH4 by steam at 900C

(b) Reduction of HCHO using LiAIH4

(c) Reaction HCHO with a solution of NaOH

(d) Reduction of CO using H2 and

ZnOCr2O3.

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Solution:

  1. (d) Water gas is mixed with half of its volume of hydrogen. The mixture is compressed to approximately 200300 atmospheres. It is then passed over a catalyst (ZnO+Cr2O3) at 300C. Methyl alcohol vapours are formed which are condensed

CO+2H2 Compressed gas ZnO+Cr2O3CH3OH Methyl alcoho 



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