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| 硝酸改性丝光沸石上合成2,6-二异丙基萘 | |
| 引用本文： | 何广湘,巩雁军,刘艳红,靳海波,窦涛.硝酸改性丝光沸石上合成2,6-二异丙基萘[J].化学工业与工程,2010,27(1):1-6. |
| 作者姓名： | 何广湘 巩雁军 刘艳红 靳海波 窦涛 |
| 作者单位： | 1. 中国石油大学(北京)中国石油天然气集团公司催化重点试验室,北京,102249;北京石油化工学院化工系,北京,102617 2. 中国石油大学(北京)中国石油天然气集团公司催化重点试验室,北京,102249 3. 北京石油化工学院化工系,北京,102617 |
| 基金项目： | 中国石油化工股份有限公司课题项目(200424);;北京市属高等学校人才强教深度计划资助项目(PHR200906139) |
| 摘 要： | 采用HNO3对丝光沸石(HM)进行脱铝改性,并采用固定床反应器对其萘异丙基化反应的性能进行评价,考察了不同脱铝方式和不同Si/Al原子比对改性HM萘异丙基化性能的影响。结果表明,水蒸汽和硝酸处理的催化剂,其B酸与L酸的比例和酸强度分布可发生变化,在保持较好的萘转化率的前提下,提高了2,6-二异丙基萘(2,6-DIPN)的选择性。随着HNO3改性后HM分子筛的Si/Al原子比的增加,催化剂活性逐渐降低,稳定性提高,选择性先提高后降低。适宜的硝酸改性脱铝工艺条件为:HM沸石先经500℃、0.5h-1的空速下高温水蒸汽处理1.0h,再用1.6mol/L的HNO3溶液于45℃下处理24.0h,此时Si/Al原子比为31,2,6-DIPN的产率为7.24%。 |
| 关 键 词： | 萘 异丙基化 2 6-二异丙基萘 丝光沸石 |
Synthesis of 2,6-Diisopropylnaphthalene over H-mordenite Catalyst Modified by Nitric Acid |
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| HE Guang-xiang,GONG Yan-jun,LIU Yan-hong,JIN Hai-bo,DOU Tao.Synthesis of 2,6-Diisopropylnaphthalene over H-mordenite Catalyst Modified by Nitric Acid[J].Chemical Industry and Engineering,2010,27(1):1-6. | |
| Authors: | HE Guang-xiang GONG Yan-jun LIU Yan-hong JIN Hai-bo DOU Tao |
| Affiliation: | 1. The CNPC Key Laboratory of Catalysis, China University of Petroleum (Beijing) , Beijing 102249, China; 2. Department of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China) |
| Abstract: | The H-mordenites (HM) was dealuminated by nitric acid leaching. The naphthalene isopropylation reaction performance of the modified HM zeolite catalyst was investigated in a fix-bed reactor. Influences of different dealuminatation methods and Si/Al ratios on catalytic performances were analyzed. The results show that the catalytic selectivity of 2, 6-DIPN is increased after dealuminated by nitric acid leaching. A combination of hydrothermal treatment with nitric acid leaching can remove acid centre effectiv... |
| Keywords: | naphthalene isopropylation 2 6-diisopropylnaphthalene mordenite |
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