NANO-NICKEL PARTICLES: SYNTHESIS, CHARACTERIZATION AND CATALYTIC HYDROGENATION
碩士 === 東海大學 === 化學系 === 93 === The hydrogenation of cinnamaldehyde(CALD)、citronellal(CTN) and t,t,c-1,5,9-cyclododecatriene(CDT) has been studied using a fixed- bed, integral-flow reactor and a batch reactor. Pd/Si-MCM-48, Ni/Si-MCM-41, Ni( nano ), Ni( 325 mesh ) and Ni( 100 mesh ) were utilized as...
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ndltd-TW-093THU000650052015-10-13T15:29:39Z http://ndltd.ncl.edu.tw/handle/76200721127317623980 NANO-NICKEL PARTICLES: SYNTHESIS, CHARACTERIZATION AND CATALYTIC HYDROGENATION 奈米鎳觸媒之製備、鑑定與氫化反應 Kuang-Yu Jao 饒光宇 碩士 東海大學 化學系 93 The hydrogenation of cinnamaldehyde(CALD)、citronellal(CTN) and t,t,c-1,5,9-cyclododecatriene(CDT) has been studied using a fixed- bed, integral-flow reactor and a batch reactor. Pd/Si-MCM-48, Ni/Si-MCM-41, Ni( nano ), Ni( 325 mesh ) and Ni( 100 mesh ) were utilized as catalysts. These materials were characterized with XRD, particle size analysis, TEM, N2 adsorption, FT-IR, TPD of NH3 and TPR of H2. Ni/MCM-41 exhibits hexagonal structure with Ni aggregates of nanometer size and low Lewis acidity. The mean size of nano-Ni particles and that of Ni ( 325 mesh ) are 20 nm and 30 μm, respectively. However, Ni containing Si-MCM-41 has higher reduction temperature than nano-nickel particle. In the reaction of CALD over (X%)Pd/Si-MCM-48 catalysts, the catalytic activity enhances with the Pd content and the main product is hydrocinnamaldehyde. The Ni ( nano ) catalyst shows better catalytic activities in the hydrogenation of both CALD and CTN. Different reaction paths are observed for the CTN reaction using Ni/Si-MCM-41 and Ni particles that are attributed to the apparent difference of catalyst acidity. With Ni/Si-MCM-41, the major product is isopulegol (IPG) that is formed via isomerization of CTN on the catalyst Lewis acid sites. With Ni particles, successive hydrogenation yields citronellol (CTNOL). These catalysts were applied to the hydrogenation of CDT at 10 bar of H2 in a batch reactor using methylcyclohexane as the solvent. The system is free of diffusional limitation at 800 rpm, and good catalytic activity is attained at the reaction temperature of 50℃. The Ni( nano ) catalyst exhibits much better results than other catalysts. An-Nan Ko 柯安男 2005 學位論文 ; thesis 104 zh-TW |
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碩士 === 東海大學 === 化學系 === 93 === The hydrogenation of cinnamaldehyde(CALD)、citronellal(CTN) and t,t,c-1,5,9-cyclododecatriene(CDT) has been studied using a fixed- bed, integral-flow reactor and a batch reactor. Pd/Si-MCM-48, Ni/Si-MCM-41, Ni( nano ), Ni( 325 mesh ) and Ni( 100 mesh ) were utilized as catalysts. These materials were characterized with XRD, particle size analysis, TEM, N2 adsorption, FT-IR, TPD of NH3 and TPR of H2. Ni/MCM-41 exhibits hexagonal structure with Ni aggregates of nanometer size and low Lewis acidity. The mean size of nano-Ni particles and that of Ni ( 325 mesh ) are 20 nm and 30 μm, respectively. However, Ni containing Si-MCM-41 has higher reduction temperature than nano-nickel particle.
In the reaction of CALD over (X%)Pd/Si-MCM-48 catalysts, the catalytic activity enhances with the Pd content and the main product is hydrocinnamaldehyde. The Ni ( nano ) catalyst shows better catalytic activities in the hydrogenation of both CALD and CTN. Different reaction paths are observed for the CTN reaction using Ni/Si-MCM-41 and Ni particles that are attributed to the apparent difference of catalyst acidity. With Ni/Si-MCM-41, the major product is isopulegol (IPG) that is formed via isomerization of CTN on the catalyst Lewis acid sites. With Ni particles, successive hydrogenation yields citronellol (CTNOL).
These catalysts were applied to the hydrogenation of CDT at 10 bar of H2 in a batch reactor using methylcyclohexane as the solvent. The system is free of diffusional limitation at 800 rpm, and good catalytic activity is attained at the reaction temperature of 50℃. The Ni( nano ) catalyst exhibits much better results than other catalysts.
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author2 |
An-Nan Ko |
author_facet |
An-Nan Ko Kuang-Yu Jao 饒光宇 |
author |
Kuang-Yu Jao 饒光宇 |
spellingShingle |
Kuang-Yu Jao 饒光宇 NANO-NICKEL PARTICLES: SYNTHESIS, CHARACTERIZATION AND CATALYTIC HYDROGENATION |
author_sort |
Kuang-Yu Jao |
title |
NANO-NICKEL PARTICLES: SYNTHESIS, CHARACTERIZATION AND CATALYTIC HYDROGENATION |
title_short |
NANO-NICKEL PARTICLES: SYNTHESIS, CHARACTERIZATION AND CATALYTIC HYDROGENATION |
title_full |
NANO-NICKEL PARTICLES: SYNTHESIS, CHARACTERIZATION AND CATALYTIC HYDROGENATION |
title_fullStr |
NANO-NICKEL PARTICLES: SYNTHESIS, CHARACTERIZATION AND CATALYTIC HYDROGENATION |
title_full_unstemmed |
NANO-NICKEL PARTICLES: SYNTHESIS, CHARACTERIZATION AND CATALYTIC HYDROGENATION |
title_sort |
nano-nickel particles: synthesis, characterization and catalytic hydrogenation |
publishDate |
2005 |
url |
http://ndltd.ncl.edu.tw/handle/76200721127317623980 |
work_keys_str_mv |
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