Paper Title:
The Effect of Physicochemical Treatment on Pd Dispersion of Carbon-Supported Pd Catalysts
  Abstract

Carbon-supported palladium catalysts were prepared by an impregnation method using palladium chloride and different carbon supports such as activated carbons with different surface oxygen concentrations and a mesoporous carbon, CMK-5.. The different degree of surface oxidation was achieved by the nitric acid and high-temperature heat treatment. The molecular PdCl2 species was stabilized by adding an HCl in an impregnation step.. As the reduction temperature increased, the Pd dispersion decreased for all Pd catalysts. There was no noticeable difference in Pd dispersion among Pd catalysts supported on carbon supports with different physicochemical properties when the reduction temperature was 423 K. Pd catalysts supported on the carbon support with a high concentration of surface oxygen groups showed a better dispersion than did other Pd catalysts when they were reduced at 573 K. The maximum Pd dispersion was observed over Pd catalyst supported on carbon supports with the highest surface area when the reduction temperature was higher than 573 K.

  Info
Periodical
Solid State Phenomena (Volume 135)
Edited by
Chang Kyu Rhee
Pages
57-60
DOI
10.4028/www.scientific.net/SSP.135.57
Citation
Y. T. Kim, E. D. Park, M. Kang, J. E. Yie, "The Effect of Physicochemical Treatment on Pd Dispersion of Carbon-Supported Pd Catalysts", Solid State Phenomena, Vol. 135, pp. 57-60, 2008
Online since
February 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xiao Ping Luo, Ming Gang Zhang, Chun Xiang Lv
Abstract:A new procedure of surface activation without using palladium salt is proposed for electroless nickel plating (Ni-P) on carbon fiber. The...
410
Authors: Ze Biao Zhang, Wan Kun Wang, Jin Hui Peng
Abstract:The leaching tests of nickel supported activated carbon under normal pressure in (NH4)2SO4 were studied. The...
1774
Authors: Ning Zhang, Xing Yu Cui, Xiao Jun Zhao, Yong Hui Zhou, Hong Min Kan
Chapter 1: Novel Processing and Manufacturing
Abstract:The present work used hydrothermal synthesis method utilizing glucose as carbon source to obtain homogeneous nano-sized carbon spheres. The...
257
Authors: Jian Bao Hu, Shao Ming Dong, Xiang Yu Zhang, Zhi Hui Hu, Bo Lu, Jin Shan Yang, Qing Gang Li, Bin Wu
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:Surface modification of carbon fibers(CF) by physicochemical methods directs an attractive approach for improvement of metal uptake from...
761
Authors: Qi Xia Liu, Tao Ji, Li Fen He, Qiang Gao
Chapter 2: Materials Science and Engineering
Abstract:Various jute-based activated carbon fibers were prepared by using jute fibers as raw materials, phosphoric acid as activating agent and...
1428