Single Choice

Name the catalyst used in commercial method of preparation of phenol.

ASilica
BCalcium phosphate
CAnhydrous aluminium chloride
DCobalt naphthenate
Correct Answer

Solution

Cobalt naphthenate is the catalyst used in a commercial method of preparation of phenol.

Alkaline solution of cumene (isopropyl benzene) in sodium carbonate is oxidised with air/oxygen in presence of cobalt naphthenate catalyst to form cumene hydroperoxide.

Cumene hydroperoxide heating with dilute $$\displaystyle H_2SO_4$$ decomposes cumene hydroperoxide to phenol and acetone.

Option D is correct.

SIMILAR QUESTIONS

Alcohols, Phenols and Ethers

Cumene $$\underset {(ii) H_{2}O, H^{+}}{\xrightarrow {(i) O_{2}}} (X)$$ and $$(Y)$$; Here, $$(X)$$ and $$(Y)$$ respectively are :

Alcohols, Phenols and Ethers

Cumene process is the most important commercial method for the manufacture of phenol. Cumene is:

Alcohols, Phenols and Ethers

Explain the preparation of phenol from cumene.

Alcohols, Phenols and Ethers

The product formed in the reaction of cumene with $$O_2$$ followed by treatment with dil.$$HCl$$ are:

Alcohols, Phenols and Ethers

Which are the sources of phenol?

Alcohols, Phenols and Ethers

The major products $$P$$ and $$Q$$ are:

Alcohols, Phenols and Ethers

How will you obtain the following? (Give balanced equation.) (i) Anisole from phenol (ii) Ethyl acetate from ethanol.

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