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Acta Physico-Chimica Sinica  2005, Vol. 21 Issue (02): 225-228    DOI: 10.3866/PKU.WHXB20050224
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A Study of CO2/H2 Adsorption on Zirconia Polymorphs
MA Zhong-Yi;YANG Cheng;DONG Qing-Nian;WEI Wei;LI Wen-Huai;SUN Yu-Han
StateKeyLaboratoryofCoalConversion,InstituteofCoalChemistry,ChineseAcademyofSciences,Taiyuan 030001;GraduateSchoolofChineseAcademyofSciences,Beijing 100039
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Abstract  The adsorption behaviors of CO2 and CO2+H2 on zirconia polymorphs were investigated by FT-IR technique. The results showed that absorbed CO2 and surface intermediates varied with zirconia polymorphs. Bicarbonate and ion carbonate species were detected on amorphous zirconia. In addition to the two species, bidented carbonate was also formed on monoclinic zirconia. The strongest adsorbed CO2 and polydentate carbonate species were found on tetragonal zirconia. In the case of CO2 hydrogenation, methane was formed on monoclinic zirconia while formate species was observed on tetragonal zirconia.

Key wordsZirconia      FT-IR      CO2 adsorption      CO2+H2     
Received: 04 August 2004      Published: 15 February 2005
Corresponding Authors: SUN Yu-Han     E-mail: yhsun@sxicc.ac.cn
Cite this article:

MA Zhong-Yi;YANG Cheng;DONG Qing-Nian;WEI Wei;LI Wen-Huai;SUN Yu-Han. A Study of CO2/H2 Adsorption on Zirconia Polymorphs. Acta Physico-Chimica Sinica, 2005, 21(02): 225-228.

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http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20050224     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2005/V21/I02/225

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