中南大学学报（自然科学版）2000，Vol.31Issue(5)：425-428,4.
几种碱金属元素对硫酸催化剂低温活性的影响
Effect of alkali-metal elements on activity of sulphuric acid catalyst at low temperature
摘要
Abstract
The thesis presents the effect of alkali-metal elements (Cs, Rb, Li ) and dosage of melting salt on activity ofsulfuric acid catalyst at low temperature, which has been prepared with metallurgical waste liquid. The result shows thatcesium is the best promoter among all the alkali-metal elements and the suitable n (Cs)/n (V) is about 0.3～0.6. Whenn (Cs)/n (V) = 0.6, the conversion of SO2 increases to 42.5 % at 410℃, which is 18.5 % higher than the activity ofcatalyst without cesium. The effect of rubidium on activity of sulfuric acid catalyst at low temperature is negative, so rubi-dium in metallurgical waste liquid should be decreased as little as possible. Lithium has a good effect on activity of cata-lyst at low temperature if there exist manifold alkali metals in catalyst, its optimum dosage is n(Li)/n(V) =0.4 andthen the conversion of SO2 is 46% at 410℃. Furthermore, if content of active components is excessive, the activity ofcatalyst at low temperature will be reduced on the contrary and the suitable n(M)/n(V) is less than 4.5.关键词
助催化剂/碱金属元素/熔盐/低温活性/硫酸/二氧化硫Key words
catalyst promoter/alkali-metal element/melting salt/activity under low temperature/sulfuric acid/sulfurdioxide分类
化学化工引用本文复制引用
陈振兴,黄彩娟,方忠和,叶华,刘今..几种碱金属元素对硫酸催化剂低温活性的影响[J].中南大学学报（自然科学版）,2000,31(5):425-428,4.基金项目
国家自然科学基金资助项目(59504005) （59504005）
