• 作者： Leu, Fang-Chin; Chang, Tsong-Huei
• 中文摘要： 本研究中之鎳觸媒是使用初期潤溼法製備,並用TM及TPR探究其性質。在Ni/SiO/sub 2/及 Ni/TiO/sub 2/觸媒中,TM及TPR可清楚分辨出兩種不同Curie溫度之鎳物種存在。其中,較低Curie溫度之鎳物種起因於鎳與載體(Ni/SiO/sub 2/及 Ni/TiO/sub 2/)間存在作用力。在Ni/Al/sub 2/O/sub 3/觸媒中藉TM可分辨出三種以上之鎳物種,可得知鎳與氧化鋁間存在複雜作用力。此外,研究結果也發現effective magneton number與載體有關。
• 英文摘要： Supported nickel catalysts were prepared by the method of incipient wetness. The properties of nickel catalysts prepared using the incipient wetness method were investigated with TPR and TM techniques . Two kinds of nickel species with different Curie temperatures in both Ni/SiO/sub 2/ and Ni/TiO/sub 2/ catalysts were clearly identified using TM and TPR. The nickel particles with low Curie temperatures were attributed to an interaction between nickel and supports (SiO/sub 2/ and TiO/sub 2/). Additionally, more than three kinds of nickel species in Ni/Al/sub 2/O/sub 3/ catalysts could be observed in the thermomagnetometric experiments. A complicated interaction between nickel and alumina was concluded from sophisticated Curie transition profiles of Ni/Al/sub 2/O/sub 3/ catalysts. Furthermore, the effective magneton number was found to be support-dependent.
• 中文關鍵字： 鎳觸媒; 熱磁; Curie溫度
• 英文關鍵字： Nickel Catalyst; Thermomagnetometry (Tm); Curie Temperature