PURIFICATION OF LIGHT HYDROCARBON AND ADSORBENT FOR PURIFICATION OF LIGHT HYDROCARBON

摘要

PURPOSE:To remove efficiently nitrogen compd. and oxygen compd. from a light hydrocarbon by using a silica/alumina carrying a rare earth metal as an absorbent. CONSTITUTION:A light hydrocarbon obtd. by cracking a petroleum or coal heavy oil, especially a 4-10C paraffin, olefin, etc., is brought into contact with an adsorbent consisting of an amorphous silica/alumina (the alumina content is pref. 10-50 wt.%) carrying 0.1-5.5 wt.%, pref. 0.1-2.0 wt.% rare earth metal (e.g. Ce, La, Y, etc.) (at ordinary temp. and usually at 10 kg/cm2 or lower) to absorb and remove nitrogen compd. (e.g. amines, pyridines, nitriles, etc.) and/or oxygen compd. (e.g. phenols and others) contained in the hydrocarbon.