公开(公告)号：EP2282834A2

公开(公告)日：2011-02-16

申请号：EP09759112.7

申请日：2009-05-29

申请人： Rentech, Inc.

发明人： NIKRAD, Pandurang, V. ,  TAYLOR, Jesse, W. ,  BLEY, Richard, A. ,  DUBUISSON, Danny, M. ,  ROLFE, Sara, L. ,  DEMIREL, Belma ,  DUVENHAGE, Dawid, J. ,  WRIGHT, Harold, A.

IPC分类号： B01J27/25 ,  B01J23/745 ,  B01J37/03 ,  C01G49/00 ,  C01B21/50

CPC分类号： B01J35/002 ,  B01J23/002 ,  B01J23/745 ,  B01J23/78 ,  B01J37/03 ,  B01J37/10 ,  B01J2523/00 ,  C07C1/044 ,  C07C1/0445 ,  C10G2/332 ,  B01J2523/13 ,  B01J2523/17 ,  B01J2523/41 ,  B01J2523/842

摘要： A method of producing stable ferrous nitrate solution by dissolving iron in nitric acid to form a ferrous nitrate solution and maintaining the solution at a first temperature for a first time period, whereby the Fe(II) content of the ferrous nitrate solution changes by less than about 2% over a second time period. A method of producing stable Fe(II)/Fe(III) nitrate solution comprising ferrous nitrate and ferric nitrate and having a desired ratio of ferrous iron to ferric iron, including obtaining a stable ferrous nitrate solution; dissolving iron in nitric acid to form a ferric nitrate solution; maintaining the ferric nitrate solution at a second temperature for a third time period; and combining amounts of stable ferrous nitrate solution and ferric nitrate solution to produce the stable Fe(II)/Fe(III) nitrate solution. A method of preparing an iron catalyst is also described.

摘要翻译： 一种通过将铁溶解在硝酸中以形成硝酸亚铁溶液并将该溶液保持在第一温度第一时间段而产生稳定的硝酸亚铁溶液的方法，由此硝酸亚铁溶液中的Fe（II）含量变化小于 在第二时间段约2％。 一种生产包含硝酸亚铁和硝酸铁的稳定的硝酸铁（II）/硝酸铁（III）溶液的方法，该溶液具有所需的二价铁与三价铁的比例，包括获得稳定的硝酸亚铁溶液; 将铁溶解在硝酸中以形成硝酸铁溶液; 将所述硝酸铁溶液在第二温度下保持第三时间段; 并结合一定量的稳定的硝酸亚铁溶液和硝酸铁溶液以产生稳定的Fe（II）/ Fe（III）硝酸盐溶液。 还描述了制备铁催化剂的方法。

公开(公告)号：EP2282833A2

公开(公告)日：2011-02-16

申请号：EP09759113.5

申请日：2009-05-29

申请人： Rentech, Inc.

发明人： DEMIREL, Belma ,  TAYLOR, Jesse, W. ,  NIKRAD, Pandurang, V. ,  ROLFE, Sara, L. ,  DUVENHAGE, Dawid, J. ,  WRIGHT, Harold, A.

IPC分类号： B01J23/745 ,  B01J37/03 ,  B01J27/25

CPC分类号： B01J37/03 ,  B01J23/002 ,  B01J23/745 ,  B01J23/78 ,  B01J35/002 ,  B01J35/0033 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1061 ,  B01J37/0045 ,  B01J2523/00 ,  C10G2/332 ,  B01J2523/13 ,  B01J2523/17 ,  B01J2523/41 ,  B01J2523/847

摘要： A method of producing a catalyst precursor comprising iron phases by co-feeding a ferrous nitrate solution and a precipitation agent into a ferric nitrate solution to produce a precipitation solution having a desired ferrous:ferric nitrate ratio and from which catalyst precursor precipitates; co-feeding a ferric nitrate solution and a precipitation agent into a ferrous nitrate solution to produce a precipitation solution having a desired ferrous:ferric nitrate ratio and from which catalyst precursor precipitates; or precipitating a ferrous precipitate from a ferrous nitrate solution by contacting the ferrous nitrate solution with a first precipitation agent; precipitating a ferric precipitate from ferric nitrate solution by contacting the ferric nitrate solution with a second precipitation agent and combining the ferrous and ferric precipitates to form the catalyst precursor, wherein the ratio of ferrous:ferric precipitates is a desired ratio.