改性活性炭脱除阿斯巴甜粗品中羰基硫的工艺研究  

Studies on Removing COS from Aspartame Products by Modified Active Carbon

作　　者：樊可可[1] 韦萍[1] 欧阳平凯[1] 吴锡军 

机构地区：[1]南京化工大学生物工程与科学系,江苏南京210009

出　　处：《化学世界》2000年第2期87-90,共4页Chemical World

摘　　要：报道了利用改性活性炭脱除Ｎ－硫代羰基酸酐（ＮＴＡ）法合成的阿斯巴甜粗品（Ａｓｐａｒｔａｍ ｅ）中混有的少量羰基硫（ＣＯＳ）。研究了改性后活性碳的吸附性能及浓度、温度、ｐＨ值及补氧等因素对脱除效果的影响，确定在温度６５℃、浓度４％ 、ｐＨ３．５并补加适量Ｏ２ 的条件下，脱除效果最佳，且产品的损失率不超过１％ 。The technology of removing carbonyl sulfide (COS), which is contained in the products of Aspartame produced by N thiocarbonyl anhydride (NTA) method is reported. Some kind of modified active carbon was employed for its good performance in removing COS selectively. Optimum technology was found: temperature 65℃, pH 3.5, time 30 minutes, concentration of crude Aspartame 4% and addition of certain amount of oxygen, under which a perfect result of removing COS was achieved and the Aspartame loss was less than 1%.

关 键 词：改性活性炭 羰基硫 阿斯巴甜 吸附性能 多肽产品 

分 类 号：TQ226.36[化学工程—有机化工] TQ424.1