以 Ti(i-OC_3H_7)_4/O_2为原料,C_2H_4作光敏剂,以 CW CO_2激光为热解光源,在连续流动反应池中制备了 TiO_2超微粉.对粉体作了 Ti 含量、IR 光谱、XRD、TG/DTA 及 TEM 等项分析表征.初始粉体为分散性好的球形颗粒,较低温度煅烧处理后的粉体仍可保持原有的颗粒形态和分散性,煅烧后的晶形是以金红石为主,并含有少量锐钛矿的混晶.
【英文摘要】
With Ti(i-OC_3H_7)4/O_2 as original materials and C_2H_4 as sensitizer,ultra-fine particlesof TiO_2 have been synthesized by a CW CO_2 laser-induced vapour-phase pyrolysis in thecontinual flowing reactor.Characterizations of the particles have been shown from titaniumcontent analysis,IR spectrum,XRD,TG/DTA and TEM.As-produced powders have thecharacters of single dispersional,spherical particles and unhealthy crystallinity,with size rangeof 0.006～0.2μm after calcination at lower temperature,the characters of...
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