Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/384

Method for preparing the oxysulfides of rare earth elements

Authors Fang, Ming
Ma, Jian Xin
Lau, Ngai Ting
Issue Date 1998-08-18
Source US Patent , 5,795,554. Washington, DC: US Patent and Trademark Office, 1998.
Summary The present invention discloses a method for the catalytic reduction of sulfur dioxide, for example in flue gas, by carbon monoxide using lanthanum oxysulfide as the active catalyst. The catalyst is prepared from lanthanum oxide by hydration and sulfidization, the latter step being carried out in the gas stream itself. This method of preparation has more general applicability and can also be used as a method for the preparation of lanthanum, yttrium, gadolinium and lutetium oxysulfides generally.
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Language English
Format Patent
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