Partial oxidation of isobutene to methacrolein on BiW/FeCoMoK mixed oxide catalysts

Alternative Reaction Engineering Concepts in Partial Oxidations on Oxidic Catalysts

“…It was confirmed a posteriori by experiments (points) and leads to an increase of 5% in the combined yield of methacrolein and methacrylic acid in comparison to an isothermal operation at 4208C. Using 2 catalysts and 3 temperature zones, an additional 4% could be added to obtain a maximum value of 76% (18). In this context, the structured bed may be considered as the reduction of a multiple step process to one.…”

“…Typical results, summarized from (9), are shown in Table 1. The analysis Figure 4: Reaction network of the partial oxidation of (A) isobutene to methacrylic acid (18) and (B) o-xylene to phthalic anhydride adapted from (9).…”

Oxyfunctionalization of Alkanes

“…Examples where the water partial pressures have been found vital include the oxidation reactions of n-butane [28], propane [29], isobutene [30], and acrolein [31] on mixed metal oxides. Consequently, certain ranges of the partial pressure (these ranges should generally be considered as ratios of the hydrocarbon to oxygen to water) can have a large benefit on the selectivity to the desired partial oxidation products.…”

Exploring structure, temperature and activity correlations in the selective oxidation of lower olefins over Bi–Mo–Co–Fe–O catalysts by spatial reactor profile measurements

“…41 On a fundamental level, such reaction networks were mainly predicted from simulations and kinetic studies in the past. 42–47 Since the assumptions for such kinetic models ( e.g. , low conversion, isothermal conditions) are often rather simplified, more realistic parameters need to be considered to optimise the catalytic processes under operating conditions.…”