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with advantages of low temperature sintering, short time sintering and high synthesis rate. Key words: BaAl2O4; microwave sintering; conventional sintering; synthesis rate 1 Introduction China possesses about... °C for 90 min 3.4 Synthesis mechanisms Fig.5 shows the schematic plan of the synthesis mechanisms of BaAl2O4. It is assumed that BaCO3 and Al(OH)3 are spherical. From Fig.5 we can see......
; synthesis ... were performed on a Japan UV-3010 and fluorescence spectra were measured on a Hitachi F-4500 spectrofluorometer. 2.2 Synthesis of compound S1 Perylene bisimide (S1) was synthesized according......
要氢气和氮气的混合气体, 氮化气氛中少量的氢促进了原料氮化和除去杂质氧. 微波高温合成技术的合成温度和合成时间较传统工艺具有明显的优势. 关键词: 氮化锰; 铁合金; 微波合成; 传统合成 中图分类号: TF123.134 文献标识码: A Microwave synthesis of manganese nitride HUANG Jia-wu, LI Jun, PENG Hu... of H2 and N2mixture atmosphere, 750℃ and holding time 2h in microwave applicator. The effects of particle size, synthesis temperature, holding time and reaction atmosphere were studied. The results show......
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. Mechanochemical synthesis of TiAl3/Al2O3 ultrafine grained composite[J]. International Journal of Modern Physics B, 2008, 22(18/19): 2914-2923. [6] Travitzky N, Gotman I, Claussen N. Alumina-Ti aluminide...] Wang T, Lu Y X, Zhu M L, ZHANG J S, JI S J. DSC research on critical temperature in thermal explosion synthesis reaction Ti+3Al→TiAl3[J]. Journal of Thermal Analysis and Calorimetry, 2002, 67(3......
to afford four series of 2-alkyl,2-aryl and 2-styryl benzoxazoles,respectively, and a possible reaction mechanism for their synthesis was proposed. The reaction conditions including the molar ratio... benzoxazoles. The method is concise and efficient for the synthesis of 2-substituted benzoxazoles. Key words: benzoxazole; o-aminophenol; phosphorus oxytrichloride; synthesis 苯并噁唑是一类是重要的杂环化合物,它具有抗炎,抗菌,抗肿瘤等......
J. Cent. South Univ. (2012) 19: 2130-2135 DOI: 10.1007/s11771-012-1255-3 Microwave radiation one-pot synthesis of chloropropyl-functionalized mesoporous MCM-41 XU Yan-qin(徐彦芹), CAO Yuan(曹渊), XIA Zhi... synthesis of MCM-41-(CH2)3Cl with well structure is obtained. The optimal microwave power is 120 W and the best microwave time is 50 min. The dosage of chloropropyltriethoxysilane on the structure......
Synthesis and Electrical Properties of La0.8Sr0.2-xCa xCo0.9Fe0.1O3-δ 崔衡1,马文会1,张雄飞1,陈书荣1,谢刚1 (1.Faculty of Materials and Metallurgy Engineering, Kunming University of Science and Technology, Kunming 650093, China) Abstract:Effects of small amount of Ca doping in La site in LaCoO3-based oxide on the synthesis and electrical conductivity were investigated by using X-ray diffraction (XRD......
