Patent ID: 7402719
Filing Date: 2008-07-22
Classification: B01J,C07C,Y10S

Abstract:
1. A method for catalytic oxidative dehydrogenation of a gaseous hydrocarbon, comprising: flowing a hydrocarbon-containing fluid and a source of oxygen into a microchannel; wherein a catalyst is present in the microchannel; reacting the hydrocarbon-containing fluid and the source of oxygen, in the microchannel, in a temperature range of 335 to 1000° C., to form water and at least one alkene and/or aralkene; and wherein said method is characterized by superior conversion, selectivity and/or yield, such that, as compared to a reaction conducted under the same conditions (reactant feed composition, oxidant, diluent, ratios of feed/oxidant/diluent (with diluent level as close as practicable), contact time, pressure, catalyst bed temperature, catalyst composition and form) in a 1.0 cm inner diameter quartz tube with no active cooling and pre-mixed hydrocarbon and oxidant, the results of the method exhibits one or more of the following: (a) an at least 20% relative higher ratio of selectivities of CO/CO (b) an at least 10% relative higher conversion of hydrocarbon; or (c) an at least 10% relative higher yield of olefins; or (d) an at least 10% relative higher selectivity to olefins; or (e) an at least 10% relative lower selectivity of carbon dioxide.