Improving the performance of contaminated wax isomerate oil and hydrocarbon synthesis liquid products by silica adsorption

摘要

The daylight stability, foaming characteristics, colour, engine performance test behaviour, oxygenates content, and thermal stability of wax isomerate oils and/or hydrocarbon synthesis liquid products are improved by a method comprising contacting the aforesaid wax isomerate oil and/or hydrocarbon synthesis liquid products with a silica adsorbent, said silica adsorbent being characterized by possessing a pore size of at least about 100Å (10 nm), preferably at least about 125Å (12.5 nm), most preferably at least about 150Å (15 nm), an alkali/alkaline earth ion concentration, excluding sodium, of greater than about 125 ppm, an iron content of less than about 40 ppm and a zirconium content of less than about 130 ppm.