نتایج جستجو برای: combustion synthesis

تعداد نتایج: 438403  

2017
Aniket Kumar Lipeeka Rout Lakkoji Satish Kumar Achary Rajendra. S. Dhaka Priyabrat Dash

A facile, efficient and environmentally-friendly protocol for the synthesis of xanthenes by graphene oxide based nanocomposite (GO-CuFe2O4) has been developed by one-pot condensation route. The nanocomposite was designed by decorating copper ferrite nanoparticles on graphene oxide (GO) surface via a solution combustion route without the use of template. The as-synthesized GO-CuFe2O4 composite w...

2013
Lei Wang Yuejiao Chen Jianmin Ma Libao Chen Zhi Xu Taihong Wang

Controllable synthesis and surface engineering of nanomaterials are of strategic importance for tailoring their properties. Here, we demonstrate that the synthesis and surface adjustment of highly stable hierarchical of SnO2 nanospheres can be realized by biomineralization, vulcanization and oxidation techniques. Furthermore, we reveal that the highly stable hierarchical SnO2 nanospheres ensure...

2015
K. Ganapathi Rao Venkateswara Rao Shilpa Chakra

Green synthesis of nanoparticles supports reuse, reduce and recycle concept towards the environmental friendly synthesis and also produce the good results compare to chemical methods in some of the cases. MgO nanoparticles can be prepared by solution combustion synthesis using citric acid is a fuel. The same citric acid is available in the nature in so many form just like tamarind, lemon and or...

2017
Guoliang Zhu Wei Wang Rui Wang Chuanbao Zhao Weitao Pan Haijun Huang Dafan Du Donghong Wang Da Shu Anping Dong Baode Sun Sheng Jiang Yilong Pu

The formation mechanism of TiC particles in a Ni-Ti-C system were revealed by using differential thermal analysis (DTA), XRD, and SEM to identify the reaction products in different temperature ranges. The results indicated that the synthesis mechanism of TiC in Ni-Ti-C system was complex; several reactions were involved in the combustion synthesis of TiC-Ni composite. The Ni-Ti intermediate pha...

2004
Fethi Mahmoudi Rafe Mazzeo Frank Pacard

Constant mean curvature (CMC) hypersurfaces in a compact Riemannian manifold (Mm+1, g) constitute an important class of submanifolds and have been studied extensively. In this paper we are interested in degenerating families of such submanifolds which ‘condense’ to a submanifold Kk ⊂ Mm+1 of codimension greater than 1. It is not hard to see that the closer a CMC hypersurface is (e.g. in the Hau...

2014
Hongwang Wang Jim Hodgson Tej B Shrestha Prem S Thapa David Moore Xiaorong Wu Myles Ikenberry Deryl L Troyer Donghai Wang Keith L Hohn Stefan H Bossmann

The quest for renewable and cleaner energy sources to meet the rapid population and economic growth is more urgent than ever before. Being the most abundant carbon source in the atmosphere of Earth, CO2 can be used as an inexpensive C1 building block in the synthesis of aromatic fuels for internal combustion engines. We designed a process capable of synthesizing benzene, toluene, xylenes and me...

2003
Michael Frankel Victor Roytburd

Solutions of a 1-D free-interface problem modeling solid combustion front propagating in combustible mixture with periodically varying concentration of reactant exhibit classical phenomenon of mode locking. Numerical simulation shows a variety of locked periodic, quasi-periodic and chaotic solutions. PACS: 05.45.-a, 02.30.Oz, 81.20.Ka

2015
Michelle Pantoya Keerti Kappagantula Michelle L. Pantoya

Fast Reacting Nano-Composite Energetic Materials: Synthesis and Combustion Characterization Report Title Energetic composites are mixtures of solid fuel and oxidizer particles that when combined offer higher calorific output than monomolecular explosives. The composites traditionally deliver energy as diffusion limited reactions and thus their power available from reaction is much smaller than ...

2015
Jinfu Li Zhongmin Li Enhui Wang Zhanjun Wang Xiaowei Yin Zuotai Zhang

The oxidation of Ca-α-SiAlON synthesized by the combustion synthesis (CS) method with different additives was investigated in air atmosphere using thermogravimetric (TG) analysis in a temperature range from 1453 K to 1653 K. The experimental results indicated that oxidation was controlled by mixed chemical and diffusion steps. The oxidation products by XRD analysis were composed of SiO₂ and CaA...

ژورنال: :فصلنامه علمی - پژوهشی مواد نوین 2014
بهزاد امینی کیا صادق فیروزی

در این پژوهش پودرtib2-tic نانوکریستالی از راه روش جدیدی با عنوان سنتز احتراقی ماکروویو یا همان macs (microwave-assisted combustion synthesis) تولید شد. ابتدا مخلوط پودری 3ti + b4c به کمک آسیاب سیاره­ای تا 9 ساعت آسیاب شد. از پودرهای آسیاب شده جهت انجام واکنشmacs  قرص­هایی با قطر mm10 تهیه و از یک دستگاه ماکروویو خانگی با توانw1100 جهت سنتز استفاده شد. نتایج ناشی از آنالیزهای xrd و sem نشان داد ...

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