Verfahren zur Isomerisierung von Buten-1 zu Buten-2

摘要

Butene-1 is isomerized principally to cis-butene-2 by contacting butene-1 in liquid phase with a molecular sieve having an effective pore size of greater than 5 and less than 10 A. at e.g. 100 DEG C. Prior to use the molecular sieve was activated at a temperature of 400 DEG -450 DEG C. in a stream of nitrogen and 3 percent oxygen. Conversion to butene-2 was 32 mole percent of which 51.3 percent was the cis form. The cis-butene-2 is a useful feed for oxidative dehydrogenation to butadiene.