临氢条件芳烃烷基化生产偏三甲苯研究  

Study on Production of 1,2,4-Trimethylbenzene by Alkylation of Aromatic Hydrocarbons Under Hydrogen Atmosphere

作　　者：邵峻岩 曲冠熹 张强 Shao Junyan;Qu Guanxi;Zhang Qiang(Jinan Institute of New Material Industry Technology,Jinan 250000,China)

机构地区：[1]济南新材料产业技术研究院,山东济南250000

出　　处：《山东化工》2024年第4期66-69,共4页Shandong Chemical Industry

摘　　要：以改性的HZSM分子筛为催化剂,研究了伴氢条件对生产偏三甲苯的影响,结果表明,临氢条件下,催化剂寿命良好,活性在223 h以内几乎没有损失。而对于未临氢的催化剂,寿命较短,评价20 h结焦严重。除此之外,对于负载1.7%的镁改性HZSM催化剂,使用甲苯甲醇进行烷基化反应可以高效生产偏三甲苯,单程反应选择性最高可达23%。Using modified HZSM molecular sieve as catalyst,the effect of hydrogen-associated conditions on the production of 1,2,4-Trimethylbenzene was studied.The results showed that the catalyst had long service life and almost no loss of activity within 223 h.However,for the catalyst without hydrogen atmosphere,the life of the catalyst is short,and the evaluation of 20 h coking is serious.In addition,for HZSM catalysts loaded with 1.7% magnesium,the use of toluene methanol for alkylation can efficiently produce 1,2,4-Trimethylbenzene,with a one-way reaction selectivity of up to 23%.

关 键 词：偏三甲苯 临氢 催化剂 

分 类 号：TQ241[化学工程—有机化工] TQ426