Controlled synthesis and catalytic properties of supported In-Pd intermetallic compounds
Controlled synthesis and catalytic properties of supported In-Pd intermetallic compounds
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DOI：
10.1016/j.jcat.2016.05.006
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发表时间：
2016-08-01
影响因子：
7.3
通讯作者：
Armbruester, Marc
中科院分区：
文献类型：
--
作者：
Neumann, Matthias;Teschner, Detre;Armbruester, Marc
采用DTA/TG/MS方法研究了用氢气控制还原PdO/In2\O3过程中不同In-Pd金属间化合物的温度依赖性和连续相形成。开发了还原程序，通过反应性金属-载体相互作用（RMSI）获得负载的金属间化合物InPd和In 3 Pd 2颗粒，而不含可检测量的其他化合物。In 7 Pd 3只能在与元素铟的混合物中获得，这是由于在高于350 ℃的温度下直接还原In 2 O3载体。所有材料都表现出甲醇蒸汽重整的催化活性，并表现出高达98%的高CO2选择性。长期的测量证明了优越的上级稳定性的In-Pd/In 2 O3材料相比，铜基系统超过100小时的时间上流具有高选择性。(C)2016 Elsevier Inc. All rights reserved.
DTA/TG/MS measurements were used to investigate the temperature-dependent and successive phase formation of different intermetallic In-Pd compounds by controlled reduction of PdO/In2\O3 with hydrogen. Reduction procedures were developed to obtain supported intermetallic InPd and In3Pd2 particles by reactive metal-support interaction (RMSI) without detectable amounts of other compounds. In7Pd3 could only be obtained in admixture with elemental indium due to the direct reduction of the In2O3 support at temperatures above 350 degrees C.All materials exhibit catalytic activity for methanol steam reforming and exhibit high CO2 selectivities up to 98%. Long-term measurements proved the superior stability of the In-Pd/In2O3 materials in comparison with Cu-based systems over 100 h times on stream with high selectivity. (C) 2016 Elsevier Inc. All rights reserved.