Influence of the postsynthesis preparation procedure on catalytic behaviour of Ag-loaded BEA zeolites in the hydrodechlorination of 1,2-dichloroethane into value added products

• Published in: Applied catalysis. B, Environmental Environmental, 2016-12, Vol.199, p.514-522
• Main Authors: Śrębowata, A., Baran, R., Słowik, G., Lisovytskiy, D., Dzwigaj, S.
• Format: Article
• Language: English
• Subjects: 1,2-Dichloroethane; Catalysis; Chemical Sciences; Hydrodechlorination; Value added products; Zeolite
• ISSN: 0926-3373; 1873-3883
• DOI: 10.1016/j.apcatb.2016.06.060

[Display omitted] •Unique activity of Ag-loaded BEA zeolites in hydrodechlorination of 1,2-dichloroethane.•Red-C-Ag2.0SiBEA showed ∼100% selectivity to ethylene.•Activity of red-C-Ag2.0HAlBEA depended on their acidity.•Red-C-Ag2.0HAlBEA promoted formation of ∼100% of vinyl chloride.•Only large Ag nanoparticles transform into AgCl upon HDC reaction. Two silver-containing BEA zeolites prepared by a two-step postsynthesis method (Ag2.0SiBEA) and a conventional wet impregnation (Ag2.0HAlBEA) showed a high activity in the conversion of 1,2-dichloroethane (1,2-DCE) into value added products with 100% selectivity into ethylene and 100% selectivity into vinyl chloride, respectively. The role of the silver in two kinds of studied catalysts was different. The HRTEM, STEM with EDS elemental mapping showed that the excellent activity of silver containing catalyst, prepared by two-step postsynthesis method, in hydrodechlorination of 1,2-DCE was strongly related to the presence of very small (