稀土-Cu-K/Y分子筛催化剂上HCl氧化工艺的研究  

Study on Oxidation of HCI over RE-Cu-K/Y-Zeolite Catalyst

作　　者：陈献[1] 乔旭[1] 崔咪芬[1] 汤吉海[1] 

机构地区：[1]南京工业大学化学化工学院,江苏南京210009

出　　处：《化学反应工程与工艺》2007年第5期477-480,共4页Chemical Reaction Engineering and Technology

基　　金：江苏省基础研究计划(自然科学基金)资助项日(BK2007723)

摘　　要：制备了以Y分子筛作为载体,铜为活性组分,混合稀土氧化物及钾为助剂的氯化氢氧化催化剂,实验考察了催化剂粒径、HCl和O_2体积比、反应温度等对氯化氢氧化反应的影响,进行了催化剂寿命试验。结果表明,采用粒径为0.6mm的催化剂,在反应温度365℃,HCl空速490L/(kg-cat·h)的条件下,氯化氢单程转化率可达到86%以上。对氧化反应冷凝水中铜含量的等离子体发射光谱(ICP)检测结果显示,催化剂中主要活性组分铜的流失速率为6×10_(-6)g/h,催化剂具有良好的稳定性。Catalyst for hydrogen chloride oxidation supported on Y zeolite with active ingredient of copper and assistant of rare earth oxide mixture and potassium was prepared. Effects of the catalyst size, the volume ratio of HCl to O2 and reaction temperature on the oxidation of hydrogen chloride were investigated, and catalyst life for hydrogen chloride oxidation was studied. Results showed that 86% conversion of HC1 was still obtained per pass at 490 （L-HCl）/（kg-cat · h） with the suitable catalystsize of 0.6 mm, 1.5 volumn ratio of HCl to O2 and 365 ℃ reaction temperature. ICP analysis of copper content in condensate water from oxidation reaction showed that loss rate of the main active constituent of copper was 6 × 10^-6 g/h and the catalyst was good stability.

关 键 词：Y分子筛 稀土 氯化氢 氧化 

分 类 号：TQ124.4[化学工程—无机化工] TQ133.3