摘要
以硫酸法钛白粉生产的偏钛酸为原料,经过氨水中和,活性元素复合、煅烧、粉碎等工艺过程,制备了脱硝催化剂载体二氧化钛。利用粒度分布、XRD、SEM等测试手段对粉体的晶型结构、形貌等进行表征。结果表明制备的脱硝催化剂载体二氧化钛为锐钛型,粒度分布均匀,颗粒形貌较好;随着煅烧温度的升高,制备的脱硝催化剂载体二氧化钛SA90、SA100、SA200的衍射峰的强度都远低于纯锐钛型钛白粉样品BA01-01的衍射峰,结晶尺寸在100~200 nm,活性较好。
The specific titanium dioxide, a catalyst carrier for denitration, was prepared from metatitanic acid in the process of sulfuric acid titanium dioxide production, via ammonia neutralization, active element complexing, calcination and pulverization. The crystal structure and morphology of the powders were characterized by means of particle size distribution, XRD and SEM. The results show that the as-prepared titanium dioxide for denitration catalyst support is anatase type with uniform particle size distribution and good particle morphology. With the increase of calcination temperature, the diffraction peaks of the as-prepared denitration catalyst support TiO_(2) SA90, SA100 and SA200 are much lower than those of pure anatase titanium dioxide sample BA01-01. The crystal size is in the range of100-200 nm, and the activity is good.
作者
李化全
邱贵宝
吕学伟
Li Huaquan;Qiu Guibao;Lv Xuewei(College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China;Shandong Dongjia Group Co.,Ltd.,Zibo 255200,Shandong,China)
出处
《钢铁钒钛》
CAS
北大核心
2022年第3期26-32,共7页
Iron Steel Vanadium Titanium
关键词
脱硝催化剂
二氧化钛
偏钛酸
晶型
结晶尺寸
denitration catalyst
titanium dioxide
metantitanic acid
crystal type
crystal size
