Butane partial oxidation

Conte et al. (2006) EPR, Raman Vanadium phosphorus oxides Phase transformation, metastable structures + + + Butane partial oxidation... 

Over the years the range of uses of the K-L model has been extended to chemical processes that can not be described by first order kinetics. For these problems no anal3dical solution can be obtained so the resulting set of DAE equations are solved numerically. Gascon et al [48], for example, investigated the behavior of a two zone fluidized bed reactor for the propane dehydrogenation and n-butane partial oxidation processes emplo3ung the K-L model framework. 

It follows from the results presented in Table 4, that the samples obtained by mechanochemical treatment of the precursor become more active in the reaction of n-butane partial oxidation so that the hydrocarbon conversion and selectivity to maleic anhydride increase. The sample converted into vanadyl pyrophosphate by means of the mechanochemical treatment turned out to be more efficient than that activated with the reaction mixture. The most interesting is the sample after 30 min. treatment which is "half-activated" and consists of the amorphous phase. The active component forming directly in the catalytic mixture without long activation procedure gives rise to the most active and selective catalyst for n-butane oxidation. 

In this study, the evaluation of the prepared catalysts was performed using a fixed-bed microreactor shown schematically in Figure 11.2. Commercially, the predominant butane partial oxidation process employs a fixed-bed reactor as well, where a low concentration of w-butane is passed over the catalyst [22]. Fourier transform infrared (FTIR) spectrometry... 

Butene oligomerization, phenol synthesis from benzene, butane partial oxidation, and other reactions carried out in membrane reactors... 

Although the traditional production method of maleic anhydride was the oxidation of benzene or other aromatic compounds, butane partial oxidation has recently been used for this purpose. This substitution is mainly because of the lower price, flammability risk, and toxicity of butane. In this process, the reactant stream of n-butane and air mixture enters the packed bed or fluidized bed reactor at a temperature of 120—150 °C and a pressure of 2—3 atm and undergoes the following reaction ... 

Marin, P., Hamel, C., Orddnez, S., V. Dlez, F., Tsotsas, E., Seidel-Morgenstem, A. (2010). Analysis of a fluidized bed membrane reactor for butane partial oxidation to maleic anhydride 2D modeling. Chemical Engineering Science, 65, 3538—3548. 

Maleic anhydride is currently used in the production of unsaturated polyesters and butanediol. World consumption over the last few years has exceeded 1.3 x 10 metric tons per year. Currently, ca. 70% of MA is produced from -butane partial oxidation. In this way, partial oxidation of -butane to MA is the only... 

Alonso, M., Lorences, M., Pina, M., et al. (2001). Butane Partial Oxidation in an Externally Fluidized Bed-Membrane Reactor, Catal. Today, 67, pp. 151-157. 

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