Characterizing the dealumination of environmentally relevant zeolites using IR, NMR and neutron diffraction techniques

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Description

Results of characterization studies monitoring the sequential chemical bond breaking events, local site symmetry, and long range structural modifications of specific zeolites (H-ZSM-5, TS-1) during hydrothermal treatment of these catalyst materials are described. These characterization techniques include infrared spectroscopy of selected probe molecules, magic angle spinning NMR spectroscopy, and powder neutron diffraction. Information regarding selected examples from each of these techniques is presented and the inherent strengths of each is discussed. The experimental insight into the chemical and structural modifications of high surface area microporous catalyst materials as a function of deactivation conditions (hydrothermal conditioning) is highlighted.

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9 p.

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Paffett, M.T.; Szanyi, J.; Jacubinas, R.M.; Ott, K.C.; VonDreele, R.; Hughes, C.D. et al. July 1, 1997.

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Description

Results of characterization studies monitoring the sequential chemical bond breaking events, local site symmetry, and long range structural modifications of specific zeolites (H-ZSM-5, TS-1) during hydrothermal treatment of these catalyst materials are described. These characterization techniques include infrared spectroscopy of selected probe molecules, magic angle spinning NMR spectroscopy, and powder neutron diffraction. Information regarding selected examples from each of these techniques is presented and the inherent strengths of each is discussed. The experimental insight into the chemical and structural modifications of high surface area microporous catalyst materials as a function of deactivation conditions (hydrothermal conditioning) is highlighted.

Physical Description

9 p.

Notes

OSTI as DE97007177

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  • 7. international symposium on catalyst deactivation, Cancun (Mexico), 7-11 Oct 1997

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  • Other: DE97007177
  • Report No.: LA-UR--97-765
  • Report No.: CONF-971058--1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 532457
  • Archival Resource Key: ark:/67531/metadc695623

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  • July 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 29, 2016, 8:37 p.m.

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Paffett, M.T.; Szanyi, J.; Jacubinas, R.M.; Ott, K.C.; VonDreele, R.; Hughes, C.D. et al. Characterizing the dealumination of environmentally relevant zeolites using IR, NMR and neutron diffraction techniques, article, July 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc695623/: accessed August 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.