OSA's Digital Library

Applied Spectroscopy

Applied Spectroscopy

| PUBLISHED BY SAS — AVAILABLE FROM SAS AND OSA

  • Vol. 42, Iss. 8 — Nov. 1, 1988
  • pp: 1369–1375

The Use of Diffuse Reflectance Infrared Spectroscopy for Studies of Molecular Sieve Catalysis

S. A. Johnson, R.-M. Rinkus, T. C. Diebold, and V. A. Maroni

Applied Spectroscopy, Vol. 42, Issue 8, pp. 1369-1375 (1988)


View Full Text Article

Acrobat PDF (778 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations
  • Export Citation/Save Click for help

Abstract

Diffuse reflectance Fourier transform infrared spectroscopy (DRIFT) in conjunction with gas chromatography has been used to investigate the interaction of light hydrocarbons with the molecular sieve catalyst H-ZSM-5. Experiments were conducted in a controlled-environment (temperature, gas composition) diffuse reflectance cell interfaced with an on-line gas chromatograph. The reactivity of CH3OH, CH3CH2OH, and CH2=CH2 on H-ZSM-5 has been investigated by observing the changes in intensity of the framework hydroxyl stretching vibrations as a function of the type of reactant, temperature, and product mix. C-H stretching vibrations of the organic fragments that form in the molecular sieve channels and pores are also observed in these experiments, and they too are correlated with reactant, temperature, and product mix with the use of spectral subtraction techniques. Important functional features of molecular sieve catalysis detectable by the DRIFT method include (1) the creation of protonated sites during calcining of the synthesis template (the process by which the catalytically active form of the sieve material is produced); (2) the labile nature of these protons as a function of reactant and temperature; and (3) the onset of coking of the molecular sieve as a result of extended use or use at higher temperatures.

Citation
S. A. Johnson, R.-M. Rinkus, T. C. Diebold, and V. A. Maroni, "The Use of Diffuse Reflectance Infrared Spectroscopy for Studies of Molecular Sieve Catalysis," Appl. Spectrosc. 42, 1369-1375 (1988)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-42-8-1369

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited