Nano-Nickel particles and nickel supported on Si-MCM-41: Synthesis, characterization and catalytic hydrogenation

Tunghai University Institutional Repository > 理學院 > 化學系所 > 期刊論文 > Item 310901/21233

Please use this identifier to cite or link to this item: http://140.128.103.80:8080/handle/310901/21233

Title:	Nano-Nickel particles and nickel supported on Si-MCM-41: Synthesis, characterization and catalytic hydrogenation
Authors:	Jao, K.-Y., Hsu, C.-H., Ko, A.-N.
Contributors:	Department of Chemistry, Tunghai University
Date:	2005
Issue Date:	2013-05-14T09:03:44Z (UTC)
Abstract:	Nickel supported on Si-MCM-41 and nickel particles with different sizes were synthesized and obtained from commercial sources, respectively. These materials were characterized with XRD, particle size analysis, TEM, N2-adsorption, chemisorption, FT-IR, TPD of NH 3 and TPR of H 2. Ni/Si-MCM-41 exhibits hexagonal structure with Ni aggregates of 4-15 nm size and weak Lewis acidity. The mean size of nano-Ni particles is 25 nm. For the hydrogenation of citronellal, the catalytic activity decreases in the order of Ni/MCM-41 > Ni (nano) ? Ni (325 mesh). With Ni/Si-MCM-41, the main products include isopulegol, menthone, isopropyl-5-methylcyclohexanol and citronellol. On Ni particles, the major product is 3,7-dimethyl-octanol. Consequently, the reactions proceed via different reaction paths that depends on the presence of acidic and hydrogenation sites on the catalyst surface. ? 2005 Elsevier B.V. All rights reserved.
Relation:	Studies in Surface Science and Catalysis Volume 158 B, 2005, Pages 1501-1508
Appears in Collections:	[化學系所] 期刊論文

Files in This Item:

File	Size	Format
index.html	0Kb	HTML	162	View/Open