【摘 要】
：
Superfine cerium-zinc oxides Ce_(1-x)Zn_xO_(2-x) with x = 0, 0.1, 0.3, 0.5, and 1.0 were obtained by grinding Ce(SO_4)_2·4H_2O,ZnSO_4·7H_2O and NH_4HCO_3 unde
【机 构】
：
school of Chemistry and Chemical Engineering
论文部分内容阅读
Superfine cerium-zinc oxides Ce_(1-x)Zn_xO_(2-x) with x = 0, 0.1, 0.3, 0.5, and 1.0 were obtained by grinding Ce(SO_4)_2·4H_2O,ZnSO_4·7H_2O and NH_4HCO_3 under the condition of surfactant PEG-400 being present at room temperature, washing the mixture with water to remove soluble inorganic salts, drying at 80℃, and calcining. The precursor and its calcined samples were characterized using thermogravimetry and differential thermal analyses (TG/DTA), UV-vis absorption spectroscopy, X-ray powder diffraction (XRD), and scanning electron microscopy (SEM). The results showed that superfine Ce_(1-x)Zn_xO_(2-x) behaved as an excellent UV-shielding material. The ZnO-doped CeO_2 can facilitate the formation of crystalline state CeO_2. The catalytic ability of products used in air oxidation of castor oil was investigated. The results showed that the catalytic abilities of products decreased with increasing zinc amount.
其他文献
Hollow spheres of hexagonal ferrite BaCo2Fe16O27 were fabricated through a spray pyrolysis technique using co-precipitation ferrite powder precursor as material
The production of MoO_3 from Sarcheshmeh molybdenite concentrate via a pyro-hydrometallurgical process was studied.The molybdenite concentrate and sodium carbon
Structural changes for mechanically activated pyrite, sphalerite, galena and molybdenite with or without the exposure to ambient air, were systematically invest
In order to obtain accurate prediction model and compensate for the influence of model mismatch on the control performance of the system and avoid solving nonli
The unusual glass-forming ability (GFA) of the Zr_(48)Cu_(36)Ag_8Al_8 alloy and the high ductility of the Zr48Cu36Ag8Al8 metallic glass-matrix composites contau
The Zn(Ⅱ) phthalocyanine sensitized TiO_2 (ZnPc-TiO_2) nanoparticles were prepared by hydrothermal method via impregnation with ZnPc. The as-prepared photocata
The magnetic force microscopy and a sample vibrating magnetometer have been used to investigate the domain structure in two antiferromagnetically coupled Co/Pt
在随机变量分布为部分信息的情况下,提出了最坏情况下的条件风险(Worst-case condi-tional value-at-risk,WCVaR)指标,并建立了风险-利润的三个鲁棒组合优化模型.该模型具有
The Indium tin oxide (ITO) thin film possesses excellent photoelectric properties that enable it to act as an ideal transparent conductor. To obtain high-qualit
Zr_(58.5)Ti_(14.3)Nb_(5.2)Cu_(6.1)Ni_(4.9)Be_(11.0) bulk metallic glass matrix composites, containing β-Zr dendrites, were fabricated by Bridgman solidificatio