Spectroscopic study of phosphorus modifi
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M. GΓΆhlich; W. Reschetilowski; S. Paasch
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Article
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2011
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Elsevier Science
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English
β 585 KB
A series of H-ZSM-5 samples (Si/Al = 14) were modified by impregnation with phosphoric acid and consecutive calcination. The influence of this modification was investigated by FT-IR and 27 Al and 31 P MAS NMR spectroscopy, temperature-programmed desorption of ammonia with coupled in situ FT-IR. Pho