| SOLID STATE CHEMISTRY OF La_(1-x)Li_(x)MnO_3 AND RELATED COMPOUND |
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| 引用本文： | LIN Jun-Fan YAN Ya-XieDepartment of ChemistryInstitute of Chemistry and Chemical EngineeringNanjing UniversityNanjing,Jiangsu 210093. SOLID STATE CHEMISTRY OF La_(1-x)Li_(x)MnO_3 AND RELATED COMPOUND[J]. 天然气化学杂志, 1995, 0(2) |
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| 作者姓名： | LIN Jun-Fan YAN Ya-XieDepartment of ChemistryInstitute of Chemistry and Chemical EngineeringNanjing UniversityNanjing Jiangsu 210093 |
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| 作者单位： | LIN Jun-Fan YAN Ya-XieDepartment of ChemistryInstitute of Chemistry and Chemical EngineeringNanjing UniversityNanjing，Jiangsu 210093 |
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| 摘 要： | A series of perovskite type oxides La_(1-x)A_(x)MnO_3(x=0.1 for A=Li,Na,K;x=0.1～0.5 for A=Li)have been prepared by impregnation.Experimental results showed that the substitution of La~(3 ) by Li~ inLaMnO_(3 ?) greatly increased the selectivity to ethane and ethylene for theoxidative coupling of methane.Temperature-programmed desorption of oxygenproved the presence of oxygen vacancies in the oxide lattice.The higher Mn~(4 )/Mn_t ratio in oxide made the formation of oxygen vacancies easier on the oxidesurface.The general formula of the oxides is La_(1-x)Li_(x)Mn＇V＇_(y)O_(3-y),V=vacancy.
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SOLID STATE CHEMISTRY OF La_(1-x)Li_(x)MnO_3 AND RELATED COMPOUND |
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| LIN Jun-Fan YAN Ya-Xie. SOLID STATE CHEMISTRY OF La_(1-x)Li_(x)MnO_3 AND RELATED COMPOUND[J]. Journal of Natural Gas Chemistry, 1995, 0(2) |
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| Authors: | LIN Jun-Fan YAN Ya-Xie |
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| Affiliation: | LIN Jun-Fan YAN Ya-XieDepartment of ChemistryInstitute of Chemistry and Chemical EngineeringNanjing UniversityNanjing,Jiangsu 210093 |
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| Abstract: | A series of perovskite-type oxides La(1-x)A(x)MnO3 (X=0.1for A = Li,Na,K; x = 0. l~0. 5 for A = Li) have been prepared by impregnation. Experimental results showed that the substitution of La3 by Li in LaMnO3 ? greatly increased the selectivity to ethane and ethylene for the oxidative coupling of methane. Temperature-programmed desorption of oxygen proved the presence of oxygen vacancies in the oxide lattice. The higher Mn4 / Mn, ratio in oxide made the formation of oxygen vacancies easier on the oxide surface. The general formula of the oxides is La(1-x)Li(x)Mn'V'(y)O(3-y), V = vacancy. |
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| Keywords: | oxidative coupling of methane oxides perovskite type oxide lanthanum manganese lithium oxide |
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