Open AccessMoessbauer spectroscopy studies of iron-catalysts used in Fischer-Tropsch (FT) processes. Quarterly technical progress report, January--March, 1994
Author(s) -
G.P. Huffman,
K.R.P.M. Rao
Publication year - 1994
Language(s) - English
Resource type - Reports
DOI - 10.2172/113890
Subject(s) - fischer–tropsch process , magnetite , hematite , carbide , catalysis , mössbauer spectroscopy , superparamagnetism , materials science , phase (matter) , spectroscopy , analytical chemistry (journal) , metallurgy , chemistry , inorganic chemistry , magnetization , crystallography , environmental chemistry , physics , organic chemistry , selectivity , quantum mechanics , magnetic field
The objective of this project is to carry out a Moessbauer spectroscopy study of Iron-based catalysts to identify iron phases present and correlate with water gas shift and FT activities. A total of 15 catalysts were evaluated so far. Results are presented on the amounts in each catalyst of the following phases: superparamagnetic phase, hematite ({alpha}-Fe{sub 2}O{sub 3}), magnetite (Fe{sub 3}O{sub 4}), Chi-carbide phase ({chi}-Fe{sub 5}C{sub 2}), and an epsilon-carbide phase ({var_epsilon}-Fe{sub 2.2}C)