低碳烃在Ga/HZSM-5型催化剂上转化为芳烃的研究ⅠGa/HZSM-5催化剂芳构化过程考察  

STUDY ON AROMATIZATION OF LIGHT HYDROCARBONS OVER Ga/HZSM-5 BASED CATALYSTS Ⅰ REVIEW OF AROMATIZATIOM ON Ga/HZSM-5

作　　者：朱华青[1] 翟效珍[1] 刘盛楹[1] 高志贤[1] 王建国[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原030001

出　　处：《燃料化学学报》1999年第S1期66-70,共5页Journal of Fuel Chemistry and Technology

摘　　要：对Ga/HZSM-5催化剂的正己烷和催化重整抽余油的芳构化过程进行了研究。考察了温度、空速等反应条件对正己烷转化率和芳烃收率的影响,对不同碳数的正构烷烃(正己烷、正戊烷、正丁烷)转化产物分布的比较发现,在裂解步骤中,由于烯丙基正碳离子的稳定性,主要发生裂解为C=3的反应。在550℃,WHSV=05h-1下,以试剂正己烷为原料时,80h平均液体收率612%,芳烃收率593%,H2产率39%,燃料气349%;以催化重整抽余油为原料时,70h平均液收602%,芳烃收率546%,H2产率28%,燃料气370%。The aromatization of n-hexane and extractive raffinate oil from catalytic reforming over Ga/HZSM-5 catalysts was studied The effects of reaction temperature and space velocity on the conversion and yield of aromatics were examined For different hydrocarbon feedstocks(n-C 0 6, n-C 0 5, n-C 0 4), it could be concluded that the main cracking reaction was in which propene could be produced due to the stability of the propyl carbenium ions At reaction temperature 550℃ and WHSV 0 5h -1 , the average yields within 80 hours on stream for n-C 0 6 were found as following: liquild products 61 2 wt %,aromatics 59 3%, hydrogen 3 9%, and fuel gas 34 9% For extractive raffinate oil conversion, the results were 60 2%, 54 6%, 2 8%, 37 0% respectively within 70 hours on stream

关 键 词：正己烷 重整抽余油 Ga/HZSM-5 芳构化 

分 类 号：TQ241[化学工程—有机化工]