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頁籤選單縮合
題名 | Isopropylation of Naphthalene Over Mordenite Zeolites: Effect of Si/Al Ratio=萘在絲光沸石上之異丙基化反應:Si/Al比之影響 |
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作者姓名(中文) | 曾益民; 吳鎮芳; 陳郁文; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷期 | 30:2 1999.03[民88.03] |
頁次 | 頁93-98 |
分類號 | 460.02 |
關鍵詞 | 萘; 絲光沸石; 異丙基化反應; Isopropylation; Naphthalene; Mordenite; |
語文 | 英文(English) |
中文摘要 | 本研究探討�B與丙烯於不同矽╱鋁比之絲光沸石上的異丙基化反應,反應係於300 ℃,7kg ╱ cm �插A1 h □之空間流速下於固定床反應氣進行反應,丙烯與�B之進料莫耳比 為 6。 不論矽╱鋁比為何,絲光沸石均顯現出良好的 2, 6- 形狀選擇性,�B的轉化率隨沸 石矽╱鋁比之增加而降低, 2, 6 ﹣與 2, 7 ﹣二異丙基�B之選擇率隨矽╱鋁比增加而增加 , 2, 6 ﹣二異丙基�B於二異丙基�B之選擇率與 2, 6 ﹣╱ 2, 7 ﹣異丙基�B之比均高於熱 力學平衡值,二者均隨矽╱鋁比增加而增加。沸石之形狀選擇性隨著沸石的矽╱鋁比與反應 時間增加而顯著。 |
英文摘要 | Isopropylation of naphthalene with propylene was carried out over mordenite zeolites with various Si/Al ratios in the range of 23 and 112. The reaction was carried out in a fixed-bed reactor at 300 ℃, 7kg/cm ��, WHSV = 1 h □, and the molar ratio of propylene to naphthalene of 6. All mordenite zeolites exhibited significant shape selective properties. The naphthalene conversion decreased with an increase in the Si/Al ratio of the zeolite. Also, the selectivity of 2, 6- and 2, 7-diisopropylnaphthalene (DIPN) in total DIPN increased with an increase in the Si/Al ratio. The compositions of 2, 6-DIPN in total DIPN and the ratios of 2, 6-/2, 7 isomers for all zeolites are far above equilibrium values. Both of them increased with an increase in the Si/Al ratios. The shape selective properties would become more significant with an increase in the Si/Al ratio and the reaction time on stream. |
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