DEHYDROGENATION OF ALKANOLS TO INCREASE YIELD OF AROMATICS

摘要

The present invention provides methods, reactor systems, and catalysts for increasing the yield of aromatic hydrocarbons produced while converting alkanols to hydrocarbons. The invention includes methods of using catalysts to increase the yield of benzene, toluene, and mixed xylenes in the hydrocarbon product.

主权项

1. A method of converting alkanols to aromatic hydrocarbons, the method comprising:
partially dehydrogenating a C1-C6 alkanol feedstock in the presence of a dehydrogenation catalyst at an effective dehydrogenation temperature and an effective dehydrogenation pressure to produce a mixture of oxygenate components comprising (a) an unreacted C1-C6 alkanol and (b) a carboxylic acid, an aldehyde, an ester, or any combination thereof, wherein at least a portion of the oxygenate components in the mixture have a hydrogen to carbon effective ratio of less than 1.6, and wherein the mixture of oxygenate components has a total hydrogen to carbon effective ratio of between 1.0 and 1.8; and exposing the mixture of oxygenate components to an oxygenate conversion catalyst at an oxygenate conversion temperature and an oxygenate conversion pressure to produce aromatic hydrocarbons.