纳米TiO_2黏度对脱硝催化剂前体可塑性的影响  

Effect of nano-TiO_2 viscosity on plasticity of denitrification catalyst precursors

作　　者：宋伟 高春昱 王松 于宁 孟凡飞 王广建[1] Song Wei;Gao Chunyu;Wang Song;Yu Ning;Meng Fanfei;Wang Guangjian(College of Chemical Technology,Qingdao University of Science&Technology,Qingdao Shandong 266042,China;Huadian Qingdao Environmental Protection Technology Co.,Ltd.,Qingdao Shandong 266200,China)

机构地区：[1]青岛科技大学化工学院,山东青岛266042 [2]华电青岛环保技术有限公司,山东青岛266200

出　　处：《石油化工》2018年第1期27-30,共4页Petrochemical Technology

摘　　要：通过分析纳米TiO_2的粒度、粒度分布、比表面积变化、氨水的加入量等参数研究了黏度对脱硝催化剂可塑性的影响。实验结果表明,黏度与可塑性存在关联,且二者具有较高的一致性,可塑性随黏度的增加而增加;纳米TiO_2粒度越小,黏度越高,纳米TiO_2黏度受粒度和粒度分布的共同影响;比表面积变化对黏度影响较小;p H的降低可能是由于纳米TiO_2中的硫酸铵盐的分解造成的;氨水的加入量会影响黏度的大小,通过控制氨水加入量可以使纳米TiO_2粉体黏度达到最大值,合成出强度较好的脱硝催化剂前体。The effects of viscosity on the plasticity of the catalyst were investigated by analyzing the parameters of the particle size,particle size distribution,specific surface area and the amount of ammonia added.The results indicate that there is quite consistent dependence of plasticity on viscosity.The increase of viscosity leads to the higher plasticity.The higher viscosity is due to the smaller particle size.The denitrified nano-TiO2 is affected by the particle size and particle size distribution.The change of specific surface area has little effect on the viscosity.The decrease of pH may be caused by the decomposition of ammonium sulfate salt in the nano-TiO2.The amount of ammonia added will affect the viscosity.By controlling the amount of ammonia added,the nano TiO2 powder viscosity reaches the maximum,and the higher strength denitration catalyst precursor was prepared.

关 键 词：钛白粉 黏度 可塑性 脱硝催化剂 

分 类 号：TQ426.6[化学工程]