TITLE: CO + H Sub 2 Reaction over Nitrogen-Modified Iron Catalysts.

Quarterly Technical Progress Report, July 1-September 30, 1984.

AUTHOR: W. N. Delgass.

INST.  AUTHOR: Purdue Univ., Lafayette, IN.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  Jan 85,  54p.

NTIS ORDER NO.: DE85004875/INW

ABSTRACT:

Detailed curve-fitting of the Moessbauer spectra of the pure nitrides has produced a quantitative description of the spectral components and of the structural features of the pure nitrides. This information has then been used to quantitatively follow loss of nitrogen from zeta-Fe sub 2 N in H sub 2 and in He. A shrinking core model accounts for N loss in H sub 2 at 473 degrees K. N loss in He is not great at temperatures below 600 degrees K. Transient kinetics studies by mass spectrometry show that precarburizing Fe sub 2 N with CO moderates nitrogen loss, but after an induction period NH sub 3 production leads CH sub 4 production. Thus, surface N loss is not effectively prevented by this pretreatment. 12 references, 13 figures, 3 tables. (ERA citation 10:012628)

REPORT  NUMBER: DOE/PC/50804-8

CONTRACT  NUMBER: FG22-82PC50804