Open AccessSlurry phase iron catalysts for indirect coal liquefaction. Second semi-annual progress report, January 5, 1996--July 4, 1996
Author(s) -
Abhaya K. Datye
Publication year - 1996
Language(s) - English
Resource type - Reports
DOI - 10.2172/415787
Subject(s) - hematite , catalysis , fischer–tropsch process , materials science , calcination , colloidal silica , agglomerate , chemical engineering , slurry , mineralogy , magnetite , liquefaction , metallurgy , nanotechnology , chemistry , composite material , organic chemistry , coating , engineering , selectivity
During this period, work was continued on understanding the attrition of precipitated iron catalysts and work initiated on synthesizing catalysts containing silica binders. Use of a sedigraph particle size analyzer with an ultrasonic probe provides a simple method to test the strength of catalyst agglomerates, allowing the strength comparison of silica and hematite catalysts (the former is considerably stronger). Study of Fe/silica interactions was continued. Addition of a colloidal silica precursor to calcined Fe{sub 2}O{sub 3} catalyst had no detrimental effect on reducibility of the hematite to {alpha}-Fe. XRD and electron microscopy will be used to analyze the crystal structure and types of C present in samples from long Fischer-Tropsch runs