TEMPERATURE-PROGRAMMED REDUCTION AND TEMPERATURE-RESOLVED SORPTION STUDIES OF STRONG METAL SUPPORT INTERACTION IN SUPPORTED PALLADIUM CATALYSTS
TEMPERATURE-PROGRAMMED REDUCTION AND TEMPERATURE-RESOLVED SORPTION STUDIES OF STRONG METAL SUPPORT INTERACTION IN SUPPORTED PALLADIUM CATALYSTS
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DOI：
10.1016/0021-9517(85)90359-8
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发表时间：
1985-01-01
影响因子：
7.3
通讯作者：
YEH, CT
中科院分区：
文献类型：
--
作者：
CHANG, TC;CHEN, JJ;YEH, CT
制备了不同载体上的钯催化剂，用于强金属-载体相互作用(SMSi)研究。采用程序升温还原和温度分辨吸附相结合的方法研究了这些催化剂的还原和吸氢性能。温度低于200℃时，钯被还原，温度较高时，氢从钯溢出到载体上。高温氢处理也导致了SMSi和烧结。溢出、烧结和SMSi的程度取决于支持。体钯对氢的吸收也受到SMSi的抑制。在相同的还原条件下，负载型Pd催化剂的烧结过程遵循Pd C>；Pd TiO2>；Pd Al2 O3>；Pd SiO 2。
Palladium catalysts on various supports were prepared for strong metal-support interaction (SMSI) studies. The reduction and hydrogen sorption for these catalysts were investigated by a combination of temperature-programmed reduction and temperature-resolved sorption techniques. Palladium was found to be reduced at temperatures lower than 200° C. Spillover of hydrogen from Pd to supports occurred at higher temperatures. Hydrogen treatment at high temperatures also induced SMSI and sintering. The extent of spillover, sintering, and SMSI are support-dependent. The absorption of hydrogen into bulk palladium was also suppressed by SMSI. Under the same reduction conditions, the sintering of supported palladium catalysts follows the trend Pd C> Pd TiO 2> Pd Al 2 O 3> Pd SiO 2.