水热处理HZSM-5临氢芳构化催化剂研究  

Study on HZSM-5 catalyst modified by hydrothermal treatment for hydroaromatization

作　　者：王崇 张孔远[2] 刘晓林 周洪涛 WANG Chong;ZHANG Kong-yuan;LIU Xiao-lin;ZHOU Hong-tao(Sinochem Quanzhou Petrochemical Co.,Ltd.,Quanzhou 362000,China;College of Chemical Engineering,China University of Petroleum,Qingdao 266580,China;Dandong Mingzhu Special Resin Co.,Ltd.,Dandong 118000,China)

机构地区：[1]中化泉州石化有限公司,福建泉州362000 [2]中国石油大学(华东),山东青岛266580 [3]丹东明珠特种树脂有限公司,辽宁丹东118000

出　　处：《精细与专用化学品》2025年第1期44-49,共6页Fine and Specialty Chemicals

摘　　要：在480℃水热处理温度下,对HZSM-5催化剂进行不同时间的水热处理,采用X射线衍射(XRD)、低温N2吸附-脱附、吡啶红外光谱(Py-IR)和程序升温脱附(TPD)等方法对所制备催化剂进行了表征。水热处理改善了HZSM-5催化剂的孔结构,使催化剂形成了多级孔结构,并调变了催化剂的酸性。以正庚烷为原料考察了水热处理前后HZSM-5催化剂的临氢芳构化性能。结果表明,正庚烷的转化率随着催化剂水热处理时间的延长而降低,水热处理时间为4h,反应产物中的芳烃总含量、苯、甲苯和二甲苯(BTX)含量及选择性有最大值。At a hydrothermal treatment temperature of 480C,the HZSM-5 catalyst was subjected to different durations of hydrothermal treatment.These catalysts were characterized by XRD,N2 adsorption-desorption methods,Py-IR and TPD.The hydrothermal treatment improved the pore structure of the HT/HZSM-5 catalyst,resulting in the formation of a multi-level pore structure and altered the acidity of the catalyst.HT/HZSM-5 in hydroaromatization were investigated with n-heptane as probe reactant.The results showed that the conversion rate of n-heptane decreased with the prolongation of the catalyst's hydrothermal treatment time.When the hydrothermal treatment time was 4 hours,and the total aromatics content,BTX content,and selectivity in the reaction products reached their maximum values.

关 键 词：HZSM-5催化剂 临氢芳构化 水热处理 正庚烷 

分 类 号：TQ426[化学工程]