نتایج جستجو برای: low temperature synthesis

تعداد نتایج: 1923025  

Catalyst activity and performance are the most important factors for selecting a catalyst in different processes. The Fischer-Tropsch synthesis is a very important synthesis that extensive action has been taken place to increase the activity of its catalysts in the recent century. Deactivation of the catalysts of the process is influenced by many factors, among which coking and sintering have c...

2010
SanHua Lim Zhiqiang Luo ZeXiang Shen Jianyi Lin

The application of plasma-enhanced chemical vapour deposition (PECVD) in the production and modification of carbon nanotubes (CNTs) will be reviewed. The challenges of PECVD methods to grow CNTs include low temperature synthesis, ion bombardment effects and directional growth of CNT within the plasma sheath. New strategies have been developed for low temperature synthesis of single-walled CNTs ...

2013
Bao Q. Ta Tormod B. Haugen Nils Hoivik Einar Halvorsen Knut E. Aasmundtveit

Local synthesis and direct integration of carbon nanotubes (CNTs) into microsystems is a promising method for producing CNT-based devices in a single step, low-cost, and wafer-level, CMOS/MEMS-compatible process. In this report, the structure of the locally grown CNTs are studied by transmission imaging in scanning electron microscopy-S(T)EM. The characterization is performed directly on the mi...

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In this study, B4C / SiC nanocomposite powder with 1 to 1 molar ratio was synthesized completely in situ, with high purity and at low temperature by mechanical activation volume combustion synthesis method. At first, raw materials consist of B2O3, Mg, C and Si were weighed. The weighed materials were mixed and milled for 9 hours by planetary ball mil and under argon atmosphere. Milled materials...

Journal: :Proceedings of the National Academy of Sciences, India Section B: Biological Sciences 2012

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 2014

Journal: :THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY 1998

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