Vapor Phase Ammoxidation of 4-Phenyl-o-Xylene into 4-Phenylphthalonitrile on V–Sb–Bi–Zr/γ-Al2O3 Oxide Catalyst

DOI: 10.4236/mrc.2015.43008   PDF   HTML   XML   2,675 Downloads   3,067 Views   Citations

Abstract

Literature data dedicated to formation of 4-phenylphthalonitrile were analyzed and generalized. As a result of the own studies, it has been established that on V–Sb–Bi–Zr/γ-Al2O3-oxide catalyst ammoxidation gives 83.10 mol.% 4-phenylphthalonitrile at high conversion of the initial 4-phenyl-o-xylene in a single process. In connection with increased demand to purity of 4-phe-nylphthalonitrile at using and division problem of hard-separable impurity of crystal 4-phe-nylphthalimide, a variant of the technological process design with average conversion and recirculation of the unreacted 4-phenyl-o-xylene and intermediate 4-phenyl-o-tolunitrile was proposed. In contrast to the single process, it has been determined that recirculation reduces quantity of form by-products, fractions of deep oxidation and increases selectivity on 4-phenylphthalonitrile up to 96.14% - 97.72%. For the data analysis and visualization of results it is developed and offered the software package of OptimMe written in C#.

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Bagirzade, G. , Taghiyev, D. and Manafov, M. (2015) Vapor Phase Ammoxidation of 4-Phenyl-o-Xylene into 4-Phenylphthalonitrile on V–Sb–Bi–Zr/γ-Al2O3 Oxide Catalyst. Modern Research in Catalysis, 4, 59-67. doi: 10.4236/mrc.2015.43008.

Conflicts of Interest

The authors declare no conflicts of interest.

References

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