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Influence of AlF3 and hydrothermal conditions on morphologies of α-Al2O3 FU Gao-feng(付高峰)1, WANG Jing(王 晶)2, KANG Jian(康 健)2 1. School of Materials and Metallurgy, Northeastern University... and to the formation of intermediate compound of AlOF, which is considered to accelerate the mass transportation from transitional Al2O3 to α-Al2O3. AlF3 concentration and hydrothermal temperature......
proved that Sn(OH)4 can be dehydrated to form SnO2 crystals under a hydrothermal condition[16], which can be expressed by the following reaction: Sn(OH)4=SnO2+2H2O ... the hydrothermal reaction are listed in Table 1. It is seen from Table 1 that pH is decreased from 10.10 to 8.13 and [Sn]T is decreased to 4.28×10-5 mol/L which is close to the calculated value of 1.0×10-6 mol/L......
. Sequentially, the rod-like α-FeOOH was generated by the phase transition of Fe(OH)3 under hydrothermal conditions. By increasing the reaction temperature, α-FeOOH began to dissolve and it was converted... reaction in the presence of polyvinyl alcohol [J]. Phys Chem Chem Phys, 2002, 4(1): 6116-6122. [17] DIAMANDESCU L, D. MIHAILA-TARABASANU D, POPECSU- POGRION N, TOTOVINA A, BIBICU I. Hydrothermal......
J. Cent. South Univ. Technol. (2011) 18: 392-398 DOI: 10.1007/s11771-011-0709-3 Ecology detection of moderate thermophilic enrichment at Lau Basin hydrothermal vents ZHOU Hong-bo(周洪波)1, JI Hou...: Culturable thermophilic microorganisms were enriched from samples collected from Lau Basin hydrothermal vents in artificial seawater medium at 45 °C and pH 7.0. Microbial diversities of the enriched......
of Co3O4 nanocrystal made by the above methods is wide. Hydrothermal method[10] is an efficient technique for preparing fine oxide powers by reaction with high temperature and high pressure in solution... Preparation and electrochemical performance of nanosized Co3O4 via hydrothermal method YANG You-ping(杨幼平), LIU Ren-sheng(刘人生), HUANG Ke-long(黄可龙), WANG Li-ping(王丽平), LIU Su-qin(刘素琴), ZENG Wen......
Cu0.3Co2.7O4 microspheres, the phases and morphology of the samples obtained at 220 °C for different hydrothermal reaction were testified by XRD and SEM characterization, respectively.Figure 4 shows the XRD... J. Cent. South Univ. (2021) 28: 1946-1954 DOI: https://doi.org/10.1007/s11771-021-4743-5 Template-free hydrothermal synthesis and gas-sensitivity of hollow-structured Cu0.3Co2.7O4 microspheres TIAN......
of the lack of preferred growth direction in the recrystallization step. Chemical compositions of the hydrothermal products prepared with optimal experimental parameters were investigated by X-ray fluorescence spectroscopy (XRF). The results (Table 6) show that the Fe2O3 content of hydrothermal product is 98.54%, and a few contamination compounds are detected. This indicates that some metal ions......
mol/L in the solution, the change of pH before and after hydrothermal reaction, the deposition of tin oxide and silver are shown in Table 1. Table 1 Changes of pH value before and after hydrothermal... Preparation of flake AgSnO2 composite powders by hydrothermal method YANG Tian-zu(杨天足)1, DU Zuo-juan(杜作娟)1, GU Ying-ying(古映莹)2, QIU Xiao-yong(邱晓勇)2, JIANG Ming-xi(江名喜)1, CHU Guang(楚 广)1 1......
, produce powder of irregular forms[7]. Hydrothermal method, a process under mild reaction conditions, typically at less than 350 ℃ and 15.2 MPa, is proved to be a convenient way to prepare many materials... the present experimental conditions. As sample D is heat-treated at 800 ℃ for 2 h, the crystallinity illustrates that the HA particles synthesized by hydrothermal reaction above 160 ℃ are high crystallized......
