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  Zeolite Rho Loaded with Methylamines. II. Dimethylamine Loadings

Weidenthaler, C., Fischer, R. X., & Abrams, L. (1997). Zeolite Rho Loaded with Methylamines. II. Dimethylamine Loadings. Acta Crystallographica Section B, 53(3), 440-443. doi:10.1107/S0108768196012530.

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 Creators:
Weidenthaler, Claudia1, Author              
Fischer, Reinhard X.1, Author
Abrams, Lloyd2, Author
Affiliations:
1Fachbereich Geowissenschaften der Universität, Klagenfurter Strasse, D-28359 Bremen, Germany, ou_persistent22              
2Central Research and Development Department, E.L du Pont de Nemours & Co., Experimental Station, Wilmington, DE 19880, USA, ou_persistent22              

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 Abstract: Samples of two differently prepared zeolite rho loaded with different amounts of dimethylamine (DMA) were studied in their hydrated forms by X-ray diffraction. Both zeolites are partially dealuminated, as indicated by nonframework A1 which is assumed to be Al2O3 or AlOOH. Series I was prepared from dry-calcined NHn-rho at 873 K, series II from steam-calcined NHn-rho at 773 K. The samples were loaded with different amounts of DMA. Rietveld refinements yielded the following results for series I: (1) H3.8(H-DMA)5Cs0.2Al9Si39O96.Al2O3.21H2O, X-ray data collection at room temperature, Im3̅m, a = 15.0590 (2) Å, Rwp = 0.089; (2) (H-DMA)8.8Cs0.2Al9Si39O96.Al2O3.18H2O, X-ray data collection at room temperature, Im3̅m, a = 15.0680 (2) Å, Rwp = 0.091. Series II: (3) H0.3(H-DMA)5Cs0.7Al6Si42O96.2.5Al2O3.24H2O, X-ray data collection at room temperature, Im3̅m, a = 15.0596 (2) Å, Rwp = 0.120. DMA resides on the center axis through the α-cage with the N atoms pointing to the single eight-ring and the two methyl groups oriented towards the center of the α-cage.

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Language(s): eng - English
 Dates: 1996-05-031996-10-071997-06-01
 Publication Status: Published in print
 Pages: 4
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1107/S0108768196012530
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Title: Acta Crystallographica Section B
  Other : Acta Crystallogr. Sect. B
Source Genre: Journal
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Publ. Info: New York : Wiley
Pages: - Volume / Issue: 53 (3) Sequence Number: - Start / End Page: 440 - 443 Identifier: ISSN: 0108-7681
CoNE: https://pure.mpg.de/cone/journals/resource/954925468299