文档介绍：华北电力大学(保定)
硕士学位论文
新型TiO2光催化剂同时脱硫脱硝的机制与技术研究
姓名:张钧钧
申请学位级别:硕士
专业:工学;环境工程
指导教师:赵毅
2011-03
华北电力大学硕士学位论文
摘要
利用溶胶凝胶法制备了 Zr、Ni 与 N 共掺杂的新型纳米 TiO2(NZN/T)光催化
剂和负载型的 NZN/T 光催化剂。以染料亚甲基蓝为目标降解物质,考察了 NZN/T
型光催化剂与未掺杂的 TiO2 在可见光下对亚甲基蓝的光催化降解效率。得到了
NZN/T 中 Zr、Ni 与 N 的最佳掺杂比例分别为 %、%以及 14%,最佳煅烧条件
为:在 700℃下煅烧 3 小时。在此最佳工艺条件下制备的 NZN/T 型光催化剂对亚甲
3
基蓝的脱除效率为纯 TiO2 的倍。在中型光催化反应器(模拟烟气量为 100m /h
左右)进行了光催化同时脱硫脱硝实验,系统的考察了各种影响因素对 NZN/T 型光
催化剂同时脱硫脱硝的影响。淋洗液离子色谱分析结果表明,光催化脱硫脱硝产物
为硫酸盐和硝酸盐,以此可推断:二氧化硫和氮氧化物的脱除反应主要为光催化氧
化反应,提出了相应的反应历程。在自制的光催化间歇反应器中进行了光催化脱除
SO2 和 NO 的反应动力学研究,得到光催化反应的速率方程。动力学实验研究表明
TiO2 光催化氧化 SO2 和 NO 均为 2 级反应,活化能分别为和
。

关键词:光催化;可见光;同时脱硫脱硝;中试试验;动力学
I
华北电力大学硕士学位论文
Abstract
In this experiment,the Zr、Ni and N-codoped nano-titania (NZN/T) was made by
sol-gel method。TiO2 supported photocatalyst was also prepared by this
photocatalytic activity of new types of TiO2(NZN/T) photocatalyst was evaluated by
degradation of methylene blue(MB), pared with the removal efficiency of the
non-doped titanium dioxide under visible optimal doping ratio of Zr, Ni and N
are %、% and 14%.The optimum calcination conditions for 3 hours at 700℃
calcined. The photocatalytic activity of NZN/T is times than that of pure TiO2. In the
pilot-scale photoreactor, many influencing factors include temperature,concentration and
gas flow were investigated in detail and a new approach and principle of SO2 and NO
simultaneous removal from flue gas was presented by doped-TiO2 photocatalyst based
on visible light technology. Ion chromatography (IC) indicated that the photocatalytic
simultaneous desulfurization and denitrification products were sulfate and nitrate, the
removal the mechanism of SO2 and NO photocatalytic reaction was the photocatalytic
oxidation the self-made batch photocatalytic reactor the apparent ic
parameters of photocatalytic removal of SO2 and NO was studied. The resul