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Promoting effect and mechanism of neodymium on low-temperature selective catalytic reduction with NH3 over Mn/TiO2 catalystsPeng Wu1,Yaping Zhang1,Ke Zhuang2,Kai Shen1,Sheng Wang2,Tianjiao Huang11... and better SO2 resistance than Mn/Ti catalyst.The results reveal that Nd-doped Mn/TiO2 catalyst exhibits larger BET surface area and better dispersion of active component Mn2O3.XPS results indicate......
J. Cent. South Univ. (2016) 23: 1318-1325 DOI: 10.1007/s11771-016-3182-1 Reduction mechanism of Fe2O3-Cr2O3-NiO system by carbon ZHANG Yan-ling(张延玲), GUO Wen-ming(郭文明), LIU Yang(刘洋), JIA Xin-lei(贾昕磊... mechanism for the initial stage, whereas two-dimensional diffusion is the rate-controlling step and f(α)=α+(1-α)ln(1-α) is the reaction mechanism for the final stage. The apparent activation energies......
Preparation of natural brucite nanofibers by the dispersion methodLi Xu1,2), Wen Ni1), Wenping Li3), Xingde Liu1), Hailong Yang1), and Xiaoguang Yang1) 1) State Key Laboratory of the Ministry..., China3) Kerneos Aluminate Technologies Ltd., Beijing 100027, China摘 要:The preparation of natural brucite nanofibers through dispersion by the wet process......
PURIFICATION OF KAOLINS BY SELECTIVE DISPERSION AND FLOCCULATION龚文琪,袁继祖摘 要:<正>To fulfill the increasingly higher requirements on thequality... processing techniques,such asgravity concentration, magnetic separation and flotation. Techniques forfine particles processing, i. e. selective dispersion and flocculation weretried to purify the kaolins......
, 以及基体炭和碳化硅的脆性断裂. 关键词: C/C-SiC复合材料; 组织结构; 断裂机制 中图分类号:TB332 文献标识码:A 文章编号: 1672-7207(2005)06-0924-05 Structure and fracture mechanism of short fibre reinforced C/C-SiC composites LIANG Jin-hua... and silicon carbide (C/C-SiC) composites were manufactured in four steps: the dispersion of short carbon fiber and silicon powder by water suspension method; after polymer impregnation, compression moulding......
Densification mechanism of chemical vapor infiltration technology for carbon/carbon composites CHEN Jian-xun(陈建勋), XIONG Xiang(熊 翔), HUANG Qi-zhong(黄启忠), YI Mao-zhong(易茂中), HUANG Bai-yun(黄伯云...: C/C composite; chemical vapor infiltration; densification mechanism  ......
Preparation and formation mechanism of Al2O3 nanoparticles by reverse microemulsion HUANG Ke-long(黄可龙), YIN Liang-guo(尹良果), LIU Su-qin(刘素琴), LI Chao-jian(李朝建) School of Chemistry and Chemical... of Al2O3 nanoparticles in the reverse microemulsion were also discussed. Key words: reverse microemulsion; Al2O3; nanoparticle; formation mechanism  ......
J. Cent. South Univ. Technol. (2007)03-0296-05 DOI: 10.1007/s11771-007-0058-4 Curing mechanism... diisocynate. Chemical reaction and curing mechanism of this system were discussed by incorporating the results of infra spectrum analysis. The results indicate that the epoxy polymeric network......
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toughness; fiber dispersion 现代建筑逐渐向高层化,轻量化,大跨化方向发展,轻质高强混凝土(HSLC)在满足结构要求的同时,大幅降低了自重,已被广泛应用于土木工程中.它同时也具备优异的隔热,吸声,防火和抗冻等性能[1].但是由于HSLC的高脆性,即在达到峰值荷载后会突然毫无征兆的断裂,限制了它的大规模工程应用.在HSLC中加入纤维是一种有效的增韧阻裂方法,一直是国内外学者.... Effect of vibration mixing on performance of highly flowing concrete[J]. Concrete, 2017(8): 152-155. [12] 王博. 振动搅拌提高混凝土性能的机理及其试验研究[D]. 西安: 长安大学机械工程学院, 2014: 49-58. WANG Bo. Mechanism and experimental......