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Preparation of nanometer δ- and β-bismuth trioxide by vacuum vapor-phase oxidation HU Han-xiang(胡汉祥)1, 2, QIU Ke-qiang(丘克强)1, XU Guo-fu(徐国富)3 1. School of Chemistry and Chemical Engineering...; Key words: δ- bismuth trioxide; β-bismuth trioxide; vacuum vapor-phase oxidation......
Reduction characteristics of molybdenum trioxide with aluminum and siliconHang-Yu Zhu1,Rong Gao2,Wu-Tao Jin2,Long-Wu Qiu2,Zheng-Liang Xue11. State Key Laboratory of Refractories and Metallurgy, Wuhan... products of molybdenum trioxide with aluminum and silicon at various temperatures were detected by X-ray diffraction(XRD). Results show that molybdenum trioxide is reduced by aluminum or silicon step......
Solid-gas Phase Preparation Method for Porous Molybdenum Trioxide任婕1,MU Shichun1,YANG Daohe2,LI Xuejing1,DONG Shengqi1,ZHU Junwei1,LIN Xianghai3,董学斌11. State Key Laboratory of Advanced Technology... to increase the porosity of MoO3 material and promote the adsorption and diffusion of reactant molecules,the microstructure of MoO3 was studied.The preparation process of porous molybdenum trioxide by solid......
J. Cent. South Univ. (2019) 26: 2328-2339 DOI: https://doi.org/10.1007/s11771-019-4177-5 Water leaching of arsenic trioxide from metallurgical dust with emphasis on its kinetics YANG Kang(杨康)1, LIU... As2O3 could reach 98.7%, while the indium could be enriched in the leaching residue without loss. Key words: arsenic leaching; arsenic removal; arsenic trioxide; arsenate; arsenic recovery Cite......
Dissolution kinetics and thermodynamic analysis of vanadium trioxide during pressure oxidationZHOU Xuejiao a, b, WEI Changa, XIA Wentang b, LI Minting a, LI Cunxiong a, DENG Zhigan a, and XU... of Science and Technology, Chongqing 401331, China摘 要:The dissolution kinetics of vanadium trioxide in sulphuric acid-oxygen medium was examined......
Electrocatalytic Activity of Tungsten Trioxide Microspheres, Tungsten Carbide Microspheres and Multi-walled Carbon Nanotube-tungsten Carbide Composites陆洪智Faculty of Engineering, China University of Geosciences摘 要:Tungsten trioxide micropheres were prepared by spray pyrolysis, and tungsten carbide microspheres were produced by spray pyrolysis-low......
at second stage with zinc powder and arsenic trioxide. In this research, a new approach is described for determination of effective parameters and optimization of zinc electrolyte hot purification process... size distributions (S1-S5), and 0.1-0.5 g/L (C) for arsenic trioxide mass concentration. Optimum conditions for hot purification obtained in this work are T4 (85 °C), t4=75 min, M4=3.5 g/L, S4 (Serie 4......
硅钼蓝分光光度法测定三氧化二砷中二氧化硅谢辉1,赖心1,黄葡英1(1.广东省广州市广州有色金属研究院分析测试中心)摘 要:研究了在三氧化二砷中加入盐酸,加热除砷,所得残渣用氢氧化钠溶解,硝酸酸化后,以钼酸铵为显色剂,在pH 0.9条件下,硅与钼酸盐形成硅钼黄络合物,用硫酸提高酸度,以抗坏血酸为还原剂,使硅形成稳定的硅钼蓝络合物,采用分光光度法测定其中的二氧化硅含量.硅钼蓝络合物最大吸收波长位于813nm处.本法相对标准偏差(RSD)为1.6%~1.9%(n=6),测定结果与ICP-AES法的结果相一致.
Preparation and Characterization of Microporous Nano-Tungsten Trioxide and Its Photocatalytic Activity after Doping Rare Earth Zou Lixia1,Liu Qingcheng1,Zhong Qin2 (1.Department of Applied Chemistry, East China Technology Institute, Fuzhou 344000, China;2.College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China) Abstract:Aqueous sols and gels......