PRECIPITATED IRON CATALYST FOR HYDROGENATION OF CARBON MONOXIDE
摘要
A method of producing an iron catalyst for catalyzing the hydrogenation of carbon monoxide is disclosed. The method comprises using a reduced amount of acid for iron dissolution compared to certain previous methods. The resulting acidic iron mixture is heated without boiling to obtain a nitrate solution having a Fe2+:Fe3+ ratio in the range of about 0.01%:99.99% to about 100%:0% (wt:wt). Iron phases are precipitated at a lower temperature compared to certain previous methods. The recovered catalyst precursor is dried and sized to form particles having a size distribution between 10 microns and 100 microns. In embodiments, the Fe2+:Fe3+ ratio in the nitric acid solution may be in the range of from about 3%:97% to about 30%:70% (wt:wt) and the calcined catalyst may comprise a maghemite:hematite ratio of about 1%:99% to about 70%:30%.
申请公布号
EP2175989(A4)
申请公布日期
2012.02.01
申请号
EP20080782701
申请日期
2008.08.11
申请人
RENTECH, INC.
发明人
DEMIREL, BELMA;BENHAM, CHARLES B.;TAYLOR, JESSE W.;NIKRAD, PANDURANG V.;ROLFE, SARA L.;IONKINA, OLGA P.;DUVENHAGE, DAWID J.;WRIGHT, HAROLD A.