| 摘要 |
<p>1499191 Removing acetylenic impurities from hydrocarbons PETRO-TEX CHEMICAL CORP 21 Jan 1975 [19 Feb 1974] 2501/75 Heading C5E [Also in Division B1] Acetylenic compounds are removed from a stream of organic compounds containing less than 5 mol. per cent free O 2 and a minor amount of acetylenic compounds by contact at 250-900‹ C. with a catalyst comprising an alkali metal, an alkaline earth metal and a component which contains at least a metal ferrite and nickel. The nickel and/or an alkaline earth metal may be present in the metal ferrite which must contain a metal other than iron. In addition to the alkali metal, alkaline earth metal, nickel and iron the catalysts may comprise a metal of Groups IB, IIB, IVA, VIA, VIIA or VIII. Preferably the purification process is applied to a product stream containing a major amount of hydrocarbon product obtained in the vapour phase oxidative dehydrogenation of hydrocarbons to give unsaturated hydrocarbons. Examples describe the catalytic oxidative dehydrogenation of butene-2 in the presence of steam at 660‹ F. to give butadiene the product stream being contacted at 1000-1050‹ F. with a catalyst of the invention resulting in a reduction in the content of vinylacetylene, formaldehyde, acetaldehyde or acrolein.</p> |
