间二甲苯氨氧化法制备间苯二腈催化剂研究

间二甲苯氨氧化法制备间苯二腈催化剂研究 Research on Catalyst to Produce Isophthalonitrile by Ammoxidation of m-xylene 郑穹 ZHENG Qiong 1 2 first-author 黄驰 HUANG Chi 1 2 许崇文 XU Chong\|Wen 1 2 韩其勇 HAN Qi\|yong 1 2 陈高清 CHEN Gao\|qing 1 2 陈远荫 CHEN Yuan\|yin 1 2 李国珍 1 2 肖修云 1 2 黄荣辉 1 2 武汉大学化学与环境科学学院,武汉,430072 武汉大学化学与环境科学学院,武汉,430072 College of Chemistry and Environment Science,Wuhan University,Wuhan 430072,China) LI Guo\|zhen, XIAO Xiu\|yun, HUANG Rong\|hui College of Chemistry and Environment Science,Wuhan University,Wuhan 430072,China) LI Guo\|zhen, XIAO Xiu\|yun, HUANG Rong\|hui 湖南南天实业股份有限公司!湘 湖南南天实业股份有限公司!湘 对氨氧化法制备间苯二腈催化剂进行了研究. 在“微反-色谱”联用装置上完成催化剂的评比和筛选后,在内径30 m m 的石英管固定床反应器上印证并进行工艺条件实验. 考察了反应温度、氨比、空气比和空速对反应的转化率,摩尔收率和选择性的影响. 在所确定的工艺条件下使用m -509 号催化剂,转化率高达99.8% 、摩尔收率70.4% ,生成的间苯二腈为白色针状结晶,纯度高于98.5% . 在湖南南天实业股份有限公司的560 m m 工业流化床反应塔上进行了为期6 个月的工业性试验,摩尔收率达66.5% ,间苯二腈含量高于98% ,单腈含量低于0.25% ,性能优于现行工业催化剂. A new ammoxidation catalyst of m \|xylene to produce isophthalonitrile which is a key intermediate of pesticide was studied. Having appraised and screened catalysts on an apparatus of “microreactor\|chromatograghy”, the further experiments confirming performance of the catalyst and finding the optimum technological conditions were carried out by using a fixed\|bed reactor made of quartz （ID 30 mm）. The effects of temperature, the ratio of ammonia, the ratio of air and the space velocity of catalyst upon the conversion, molar yield and selectivity of the reaction were observed, respectively. Using catalyst of m\|509 catalyst, on the suitable conditions, the highest conversion is 99.8%, molar yield is 70.4%. The isophthalonitrile obtained is white needle crystal with the purity higher than 98 5%. The industrial test, lasting 6 months, was run in a fluidized bed reactor （ID 560 mm ） in Hunan Nantian Co. Ltd. The yield was 66.5%, and the purity was above 98.0%. The results indicate that m\|509 catalyst is better than the NT\|1 catalyst that is using in Hunan Nantian Co. Ltd. 氨氧化 间二甲苯 间苯二腈 农药中间体 催化剂 O643 湖南南天实业股份有限公司资助 1999-06-01 2021-04-01 6