摘要
通过水解硫酸氧钒,在不加入还原剂条件下合成了三氧化二钒粉体,研究不同烧结温度以及气氛对产物的影响;对产物进行X射线衍射分析、扫描电镜形貌观察和激光粒度仪粒度检测,结果表明:在不同的气氛中,以5℃/min的升温速度,由室温升至800℃并保温3 h得到的产物不同。在氩气流量为160 mL/min的气氛中得到V4O7粉体;而在真空中煅烧的产物是V2O3粉体,其在玛瑙研钵中研磨20 min平均直径为452 nm。确定了水解硫酸氧钒获得氢氧化钒沉淀的最佳pH值约为4。
V2O3powder was prepared by hydrolyzing VOSO4without adding reducing agent. The effects of atmosphere and temperature on the sintering behavior were studied. The products were analyzed by X-ray diffraction（ XRD）,scanning electron microscope（ SEM） and laser particle size analyzer. The results show that different products are obtained with 5 ℃ /min heating rate in different atmospheres from room temperature to 800 ℃ and with insulation for 3 h. The product is V4O7powder in argon atmosphere with flow rate of 160 mL /min,while the V2O3powder is obtained in vacuum,with average diameter of 452 nm after being grinded in agate mortar for 20 min. The optimum pH for vanadium hydroxide by hydrolyzing VOSO4is approximately 4.
出处
《钢铁钒钛》
CAS
北大核心
2014年第3期10-13,共4页
Iron Steel Vanadium Titanium
关键词
硫酸氧钒
水解法
三氧化二钒
VOSO4
hydrolysis method
vanadium sesquioxide
