摘要
用溶胶凝胶自燃法制备了具有纳米特性的Ni-Zn-Fe复合氧化物脱硫剂，在300℃～500℃具有较高的脱硫活性．考察了不同煅烧温度下前驱体粉末的活性、不同高岭土添加量以及不同淀粉添加量对成型脱硫剂有效硫容的影响．结果表明，前驱体粉末的煅烧温度为500℃时硫容最高，高于500℃煅烧活性下降；高岭土加入脱硫剂中可以防止粉化，且在30％～40％添加量时脱硫剂有效硫容最高；脱硫剂中加入淀粉可以提高硫容，若添加量过高则会使脱硫剂严重粉化，5％的淀粉加入量为最好．
A kind of Ni-Zn-Fe based oxide desulfurizer of nano-properties was prepared by sol-gel self-combustion method, which has a higher reactivity at 300 ℃-500 ℃. The activity of precursor powder at different calcination temperatures and the influence of kaolin and starch additional on the effective sulfur capacity of shaped desulfurizer were investigated. The results indicate that the precursor has a maximum sulfur capacity as the calcination temperature is 500 ℃. As kaolin addition amounts to 30%-40%, the effective sulfur capacity of shaped desulfurizer is the highest. 5 % starch can function most effectively.
出处
《煤炭转化》
CAS
CSCD
北大核心
2009年第2期50-53,共4页
Coal Conversion
基金
国家重点基础研究发展规划(973)项目(2005CB221203)
国家自然科学基金资助项目(20706055)
关键词
成型脱硫剂
溶胶凝胶法
煅烧温度
高岭土
淀粉
shaped desulfurizer,sol-gel method,calcination temperature,kaolin,starch
