Hydrodechlorination of CCl4 on Pt-Au/Al2O3 Catalysts

被引：12

作者：

Legawiec-Jarzyna, Marta ^{[1
]}

Juszczyk, Wojciech ^{[1
]}

Bonarowska, Magdalena ^{[1
]}

Kaszkur, Zbigniew ^{[1
]}

Kepinski, Leszek ^{[2
]}

Kowalczyk, Zbigniew ^{[3
]}

Karpinski, Zbigniew ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland

[2] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50422 Warsaw, Poland

[3] Warsaw Univ Technol, Fac Chem, PL-00664 Warsaw, Poland

来源：

TOPICS IN CATALYSIS | 2009年 / 52卷 / 08期

关键词：

CCl4; Hydrodechlorination; Pt-Au/Al2O3; Surface chloriding; Effect of alloying; CARBON-TETRACHLORIDE; SELECTIVE HYDRODECHLORINATION; PARTICLE-SIZE; PLATINUM; DICHLORODIFLUOROMETHANE; DEHALOGENATION; HYDROGENATION; PT/AL2O3; AU;

D O I：

10.1007/s11244-009-9258-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of Pt/Al2O3 catalysts were prepared by the impregnation method and were characterized by TEM, XRD, H-2 and CO chemisorptions, and investigated in the hydrodechlorination of tetrachloromethane. Three Pt-rich, Pt-Au/Al2O3 catalysts (Pt-100, Pt95Au5 and Pt90Au10) showed a similar metal particle size (similar to 2.5-2.7 nm), so observed changes in the catalytic behavior are ascribed to alloying effect, especially because a considerable degree of Pt-Au mixing was achieved in the bimetallic samples. It appeared that by introducing very small amount of gold (10 at.%) to platinum, the catalytic activity is increased. It is argued that the occurrence of this moderate synergistic effect is associated with a decreased tendency of surface chloriding when platinum is alloyed with gold.

引用

页码：1037 / 1043

页数：7

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