Metal dispersion and distribution in Pd-based PTA catalysts

被引：30
|
作者：
Menegazzo, F.
Fantinel, T.
Signoretto, M.
Pinna, F.
机构：
[1] Univ Venice, Dipartimento Chim, I-30123 Venice, Italy
[2] Consorzio INSTM UdR, Venice, Italy
来源：
CATALYSIS COMMUNICATIONS | 2007年 / 8卷 / 06期
关键词：
palladium catalyst; hydrogenation; terephthalic acid purification; metal dispersion; metal distribution;
D O I：
10.1016/j.catcom.2006.09.021
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The influence of the pH of the impregnating H2PdCl4 solution was studied in the preparation of Pd catalysts on granular active carbon. All catalysts were tested in the purification of crude tereplithalic acid (4-CBA hydrogenation), in conditions strictly similar to those of industrial operation. The pH of the impregnating H2PdCl4 solution was found to strongly influence both Pd surface area and activity (best results with pH 1.5-2.0), while has a relatively small influence on Pd distribution. A linear relationship between catalytic activity for 4-CBA hydrogenation and Pd surface area was confirmed. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：876 / 879
页数：4
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