TITLE: Novel Analytical Approaches to Coal Beneficiation. Quarterly Report.

AUTHOR: P. R. Griffiths.

INST.  AUTHOR: California Univ., Riverside. Dept. of Chemistry.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1984,  13p.

NTIS ORDER NO.:  DE86001313/INW

ABSTRACT:

A significant fraction of the work performed under this grant in the past year has involved the characterization of adsorbates on catalysts of high surface area by diffuse reflectance (DR) Fourier transform infrared (FT-IR) spectrometry. The heterogeneous reaction of greatest interest in our laboratory is the Fischer-Tropsch synthesis of hydrocarbons from carbon monoxide and hydrogen over supported metal catalysts. Carbon monoxide adsorbed on such catalysts typically absorbs in the region between 2100 and 1800 cm exp -1 . For a catalyst of 0.1% rhodium on alumina, the root-mean-square noise level achieved when two single scan spectra, each measured at a resolution of 4 cm exp -1 in 0.2 seconds, are ratioed is only 0.2% in this wavenumber region. In this report, several spectral measurements of CO and CO/H sub 2 mixtures adsorbed on supported rhodium will be shown to demonstrate the potential of DR/FT-IR spectrometry for the study of heterogeneous catalysis. 4 refs., 6 figs.  (ERA citation 11:001062)

REPORT  NUMBER: DOE/PC/50797-T11

CONTRACT  NUMBER: FG22-82PC50797