Acidic properties of metal substituted aluminophosphates studied by adsorption calorimetry and IR spectroscopy

J.J. Janchen, M.J. Haanepen, M.P.J. Peeters, J.H.M.C. Wolput, van, J.P. Wolthuizen, J.H.C. Hooff, van

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Abstract

The heats of adsorption of MeCN on metal substituted AlPO4-5 and AlPO4-11 compared to the pure AlPO's indicate the formation of strong acidic sites. Besides these strong sites some weaker acidic centers, probably P-OH groups were found. Accordingly, IR measurements on the loaded MeAPO's show some weakly Broensted bonded MeCN in combination with a strong Lewis complex. The Lewis bonded MeCN in the MeAPO's originate from coordinative interaction of the lone pair with the bivalent framework metal ions such as Mg2+, Mn2+, Co2+ or Zn2+. [on SciFinder (R)]
Original languageEnglish
Title of host publicationZeolites and Related Microporous Materials: State of the Art 1994, Proceedings of the 10th International Zeolite Conference
EditorsJ. Weitkamp, H.G. Karge, H. Pfeifer, W. Holderich
Place of PublicationAmsterdam
PublisherElsevier
Pages373-380
ISBN (Print)0-444-81847-2
DOIs
Publication statusPublished - 1994
Eventconference; IZC: International Zeolite Conference ; 10 (Garmisch-Partenkirchen) : 1994.07.17-22; 1994-07-17; 1994-07-22 -
Duration: 17 Jul 199422 Jul 1994

Publication series

NameStudies in Surface Science and Catalysis
Volume84
ISSN (Print)0167-2991

Conference

Conferenceconference; IZC: International Zeolite Conference ; 10 (Garmisch-Partenkirchen) : 1994.07.17-22; 1994-07-17; 1994-07-22
Period17/07/9422/07/94
OtherIZC: International Zeolite Conference ; 10 (Garmisch-Partenkirchen) : 1994.07.17-22

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Cite this

Janchen, J. J., Haanepen, M. J., Peeters, M. P. J., Wolput, van, J. H. M. C., Wolthuizen, J. P., & Hooff, van, J. H. C. (1994). Acidic properties of metal substituted aluminophosphates studied by adsorption calorimetry and IR spectroscopy. In J. Weitkamp, H. G. Karge, H. Pfeifer, & W. Holderich (Eds.), Zeolites and Related Microporous Materials: State of the Art 1994, Proceedings of the 10th International Zeolite Conference (pp. 373-380). (Studies in Surface Science and Catalysis; Vol. 84). Amsterdam: Elsevier. https://doi.org/10.1016/S0167-2991(08)64135-X