- 期刊
Alkylation of Toluene with Propylene to Produce Para-Cymene
甲苯與丙烯烷反應以生成對異丙基甲苯
摘要
本文以ZSM-5及經由四氯化矽液相沈積修飾之ZSM-5顆粒進行甲苯與丙烯之烷化反應。修飾的方法是將四氯化矽與己烷之混合液加入含有14%水之HZSM-5顆粒。在烷化反應中觀察到利用修飾過之HZSM-5顆粒，在溫度為523K、WHSV為4.6（克甲苯）／（克觸媒）／小時及甲苯與丙烯比為7.7時，對異丙基甲苯之選擇率及產率均優於未修飾之HZSM-5顆粒。實驗數據顯示使用修飾過之HZSM-5顆粒，在60小時的操作下，對顆丙基甲苯之選擇率均可超過90%，此外產率會隨反應時間而增加。
關鍵字
無資料並列摘要
Alkylation of toluene with propylene over HZSM-5 pellets and HZSM-5 pellets modified by the chemical liquid deposition of SiCl4 was performed in this study. The modification was made by adding a mixture of SiCl4 and hexane to the parent HZSM-5 pellets containing 14% of water. Under the most appropriate operating conditions for alkylation, which were a temperature of 523K, a weight hourly space velocity of 4.6 (g of toluene)/(g of catalyst)/h, and a molar ratio of toluene to propylene of 7.7, the p-cymene selectivity and yield obtained using the modified HZSM-5 pellets were much higher than those obtained using the parent ones. The experimental data indicate not only that the p-cymene selectivity could exceed 90% as it in creased with time during a sixty-hour run using the modified pellets, but also that the yield increased as the reaction proceeded.
並列關鍵字
Alkylation ； Para-Cymene ； Toluene ； Propylene ； HZSM-5 ； Chemical liquid deposition ； Selectivity ； Yield延伸閱讀
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