§ Mr. David Mitchell
I have been asked to reply.
Such information as I have suggests that while special zeolites can be used to convert methyl alcohol to a spectrum of hydrocarbons including the lower olefins, even at 100 per cent. yield the conversion of methyl alcohol to ethylene and propylene would be uneconomic for the foreseeable future compared with the established technology based on steam cracking of hydrocarbon fractions. If my hon. Friend has other information, I should be glad to consider it.