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Beta zeolites with two Si/Al ratios of 17 and 1300 were used for synthesis of Ag2.0Cu2.0HAlBeta and Ag2.0Cu2.0SiBeta zeolites by conventional wet impregnation and two-step postsynthesis methods, respectively. The calcination of Ag2.0Cu2.0HAlBeta and Ag2.0Cu2.0SiBeta at 773 K for 3 h in air led to formation of C-Ag2.0Cu2.0HAlBeta and C-Ag2.0Cu2.0SiBeta. After reduction at 873 K for 3 h in flowing 10%...
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