材料期刊网

Preparation of In₂O₃-Sr₂RuErO₆ Composite Ceramics by the Spark Plasma Sintering and Their Thermoelectric Performance

Bo Cheng

材料科学技术（英文）

In_1.94Zn_0.03Ge_0.03 O₃ and Sr₂RuErO₆ composite ceramics have been prepared by the spark plasma sintering (SPS) technique. Microstructure studies show that the Sr2RuErO6 phases are randomly dispersed in the In_1.94Zn_0.03Ge_0.03 O₃ matrix. The results show that the Seebeck coe±cient increases with increasing the amount of Sr₂RuErO₆, while the thermal conductivity of the composite samples is lower than that of the In_1.94Zn_0.03Ge_0.03 O₃ ceramic. The thermal conductivity of the 7 vol.% Sr₂RuErO₆ sample can decrease to 2.15 W·m^-1·K^-1 at 973 K, and the evaluated maximum ZT value is 0.23 for 3 vol.% Sr₂RuErO₆ samples at 973 K, which makes them promising materials for the thermoelectric devices.

关键词: Indium oxide

Synthesis and Characterization of Indium Niobium Oxide Thin Films via Sol-Gel Spin Coating Method

材料科学技术（英文）

关键词:

Preparation of In2O3-Sr2RuErO6 Composite Ceramics by the Spark Plasma Sintering and Their Thermoelectric Performance

材料科学技术（英文）

关键词:

利用第一性原理研究氧化铟在甲醇水蒸气重整反应中的催化作用

林森 , 叶欣欣

催化学报 doi:10.1016/S1872-2067(12)60662-7

基于第一性原理方法,证明了甲醛在In2O3(110)表面可以选择性地转化为CO2.水分解得到的OH物种有利于甲醛脱氢得到CHO,后者不易直接脱氢,其H原子被周围的OH捕获生成CO和H2O.最后,相比较其从表面直接脱附,CO更容易获得一个晶格氧生成CO2.计算结果表明,在没有PdIn合金参与催化的甲醇水蒸气重整反应过程中,In2O3确实扮演着非常重要的角色,进而从理论上证实了甲醇在氧化铟表面选择性生成CO2的实验结果.

关键词: 密度泛函理论 , 甲醇水蒸气重整 , 反应机理 , 氧化铟