Catalytic hydrolysis of cos over conial mixed oxides modified by lanthanum

Catalytic hydrolysis of COS over calcined CoNiAl hydrotalcite-like compounds (HTLCs) modified with slight amount of lanthanum was studied. All catalysts were characterized by X-ray diffractions (XRD), Thermogravimetric analysis (TGA), Brunauer-Emmett-Teller method (BET) and Scanning electron microscope (SEM). The catalytic activities results showed that addition of La could enhance the activity of COS hydrolysis and exhibit higher sulphur capacity. Analysis data showed the catalysts could be considered mesoporous and the surface area could be decreased with La added. La could affect the crystalline phases of NiO, Co3O4 and CoO, which may be the active components for catalytic hydrolysis of COS.