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- W1978127101 abstract "Beta zeolites with two different Si/Al ratios of 17 and 1500 were used for synthesis CuxNiyHAlBEA and CuxNiySiBEA zeolites by conventional wet impregnation and two-step postsynthesis procedure, respectively. The calcination of CuxNiyHAlBEA and CuxNiySiBEA at 773 K for 3 h in air led to the formation of C-CuxNiyHAlBEA and C-CuxNiySiBEA with appearance, for the latter mainly pseudo-tetrahedral Ni(II) and Cu(II) incorporated in BEA framework and for the former, both framework pseudo-tetrahedral and extra-framework octahedral Ni(II) and Cu(II) species as evidenced by XRD, DR UV–vis and XPS. Bimetallic red-C-CuxNiyHAlBEA and red-C-CuxNiySiBEA catalysts obtained by treatment of C-CuxNiyHAlBEA and C-CuxNiySiBEA at 873 K for 3 h in flowing 10% H2/Ar stream were investigated in gas phase conversion of 1,2-dichloroethane at atmospheric pressure towards desired products (vinyl chloride and ethylene), at relatively low reaction temperature (523 K). Red-C-CuxNiyHAlBEA catalysts were active in dehydrochlorination of 1,2-dichloroethane with ∼100% of selectivity to vinyl chloride. In contrast, for red-C-CuxNiySiBEA, ∼100% of selectivity to ethylene were obtained by hydrodechlorination of 1,2-dichloroethane. Behaviour of both kinds of catalysts in catalytic conversion of 1,2-dichloroethane depends mainly on the nature of bimetallic Ni–Cu nanoparticles, their dispersion and the acidity of zeolite supports." @default.
- W1978127101 created "2016-06-24" @default.
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- W1978127101 date "2014-06-01" @default.
- W1978127101 modified "2023-09-24" @default.
- W1978127101 title "Catalytic conversion of 1,2-dichloroethane over bimetallic Cu–Ni loaded BEA zeolites" @default.
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- W1978127101 doi "https://doi.org/10.1016/j.apcatb.2014.01.052" @default.
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