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Characterization of the Lewis acid sites in zeolite HY with the probe molecule trimethylphosphine, and 31P/27Al double resonance NMR

✍ Scribed by Hsien-Ming Kao; Clare P. Grey


Book ID
107736631
Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
417 KB
Volume
259
Category
Article
ISSN
0009-2614

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✍ Weiping Zhang; Xiuwen Han; Xiumei Liu; Xinhe Bao πŸ“‚ Article πŸ“… 2003 πŸ› Elsevier Science 🌐 English βš– 127 KB

The acid sites in dealuminated HZSM-5 zeolite with crystal sizes down to the nanoscale were firstly characterized by the probe molecule trimethylphosphine (TMP). As evidenced by the combination of 31 P CP/MAS NMR, 27 Al MAS and 1 H β†’ 27 Al CP/MAS NMR measurements, the BrΓΆnsted acid sites of both mic