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Synthesize multi-walled carbon nanotubes via catalytic chemical vapour deposition method on Fe-Ni bimetallic catalyst supported on kaolin
Aliyu A, Abdulkareem AS, Kovo AS, Abubakre OK, Tijani JO, Kariim I 한국탄소학회 Carbon Letters 18 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 5 33-50 (18 pages)
(Fe-Ni) at 140°C, which accelerated the sintering and resulted in a high catalyst yield. 3.1.4. Effect of stirring speed The importance of the stirring speed is to ensure uniform miscibility of the metal particles with the support materi- als in order to guarantee that all regions have the support dispersed with the active components during the synthesis process. It is evident from Table 3... In this study, Fe-Ni bimetallic catalyst supported on kaolin is prepared by a wet impregnation method. The effects of mass of kaolin support, pre-calcination time, pre-calcination temperature and stirring speed on catalyst yields are examined. Then, the optimal supported Fe-Ni catalyst is utilised to produce multi-walled carbon nanotubes (MWCNTs) using catalytic chemical vapour deposition (CCVD) method. The catalysts and MWCNTs prepared using the optimal conditions are characterized using high... -
Electrochemical synthesis of nanosized hydroxyapatite/graphene composite powder
Vesna Mi?kovi?-Stankovi?, Sanja Erakovi?, Ana Jankovi?, Maja Vuka?inovi?-Sekuli?, Miodrag Mitri?, Young Chan Jung, Soo Jin Park, Kyong 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.4 2 233-240 (8 pages)
parameters approach to X- ray line-profle ftting. J Appl Crystallogr, 25, 109 (1992). http:// dx.doi.org/10.1107/S0021889891010804. [33] Mostafa NY. Characterization, thermal stability and sintering of hydroxyapatite powders prepared by different routes. Mater Chem Phys, 94, 333 (2005). http://dx.doi.org/10.1016/j.matchemp- hys.2005.05.011. [34] Ouyang Y, Chen L. Surface-enhanced Raman... Electrochemical synthesis was employed to prepare a novel hydroxyapatite/graphene (HAP/ Gr) composite powder suitable for medical applications as a hard tissue implant (scaffold). The synthesis was performed in a homogeneous dispersion containing Na2H2EDTA·2H2O, NaH2PO4 and CaCl2 with a Ca/EDTA/PO4 3? concentration ratio of 0.25/0.25/0.15M, along with 0.01 wt% added graphene nanosheets, at a current density of 137 mA cm?2 and pH value of 9.0. The field emission scanning electron microscopy and... -
Synthesis of thin-multiwalled carbon nanotubes by Fe-Mo/MgO catalyst using sol-gel method
Prashant Dubey, Sang Kyu Choi, Bawl Kim, Cheol Jin Lee 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2012, Vol.13 No.2 5 99-108 (10 pages)
a very fast and violent combustion process [10], and (ii) severe agglomera- tion of catalyst nanoparticles during the sintering process at the time of CNT growth. Several studies have been dedicated to the fabrication of catalyst materials in order to achieve homogeneous and effcient catalyst particles. Coquay et al. [11,12] attempted to obtain a well-dispersed Fe catalyst on an MgO support by... -
소결법에 의한 $ZrO_2/Metal$계 경사기능재료에 관한 연구(III)
정연길, 최성철, 박철원 한국세라믹학회 요업학회지 12 Pages
한국세라믹학회 요업학회지 1995, Vol.32 No.12 1337-1348 (12 pages)