发明授权
- 专利标题: Precipitated iron catalyst for hydrogenation of carbon monoxide
- 专利标题(中): 用于一氧化碳氢化的沉淀铁催化剂
-
申请号: US12189424申请日: 2008-08-11
-
公开(公告)号: US07879756B2公开(公告)日: 2011-02-01
- 发明人: Belma Demirel , Charles B. Benham , Jesse W. Taylor , Pandurang V. Nikrad , Sara L. Rolfe , Olga P. Ionkina , Dawid J. Duvenhage , Harold A. Wright
- 申请人: Belma Demirel , Charles B. Benham , Jesse W. Taylor , Pandurang V. Nikrad , Sara L. Rolfe , Olga P. Ionkina , Dawid J. Duvenhage , Harold A. Wright
- 申请人地址: US CA Los Angeles
- 专利权人: Rentech, Inc.
- 当前专利权人: Rentech, Inc.
- 当前专利权人地址: US CA Los Angeles
- 代理机构: Conley Rose, P.C.
- 主分类号: B01J23/00
- IPC分类号: B01J23/00 ; B01J21/00 ; B01J20/00
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%.