brain drain. brain drain. LINK / CITE ADD TO WORD LIST. noun. The definition of brain drain refers to a situation where all or the majority of intelligent, skilled or capable resources within a given field or geographic region leave the area because of various factors including lack of high paying jobs.
Alkylation is an important source for octane in gasoline. Source: Occupational Safety and Health Administration. Alkylation (al-kuh-ley-shun) is a secondary refinery unit operation that many refineries in the United States have because it adds high octane hydrocarbons to motor and aviation gasoline. High octane hydrocarbons are needed to help prevent autoignition of gasoline (knocking) in an engine and to meet recommended engine octane ratings.
In industry, the hydrolysis of alkyl halides is used in the production of amyl alcohols and benzyl alcohol. The hydrolysis of the esters of alcohols made with sulfuric acid (alkyl sulfates) is an important step in the industrial production of isopropyl alcohol, ethyl alcohol, and (ert-butyl alcohol from olefins.