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2799772 
Journal Article 
Catalytic conversion of trichloroethylene on nickel containing beta zeolites into value added products 
Srebowata, A; Baran, R; Lisovytskiy, D; Kaminska, II; Dzwigaj, S 
2014 
Yes 
Catalysis Communications
ISSN: 1566-7367 
57 
107-110 
WOS:000343364200023 
Nickel containing BEA zeolites, NiSiBEA and NiHAlBEA, with 2 wa, of Ni were prepared by a two-step postsynthesis method and conventional wet impregnation. The calcination of NiSiBEA and NiHAlBEA at 773 K for 3 h in air led to the formation of C-NiSiBEA and C-NiHAlBEA. After reduction at 873 K for 3 h in flowing 10% H-2/Ar, red-C-NiSiBEA and red-C-NiHAlBEA were obtained and investigated as the catalysts in hydrodechlorination of trichloroethylene at 503 K. Comparative study performed on red-C-NiSiBEA and red-C-NiHAlBEA showed very high stability of the catalyst prepared by a two-step postsynthesis method and strong deactivation of the catalyst prepared by conventional wet impregnation during similar to 17 h of reaction. Application of both catalysts resulted in high selectivity to unsaturated hydrocarbons that are the most desired products in HOC processes. TPH of the catalysts after kinetic run have shown that the main cause of deactivation of NiHAlBEA is the formation of carbonaceous species during hydrodechlorination of trichloroethylene. (C) 2014 Elsevier B.V. All rights reserved. 
Nickel; Beta zeolites; Trichloroethylene; Hydrodechlorination