| 摘要: |
| 介绍了硅，钛取代A1POU分子筛SAP041、TAP041的合成方法，采用X射线衍射(XRD)、扫描电子显微镜 (SEM)、热重-差热、氮气吸脱附等手段对合成的分子筛进行了表征,考察了晶化温度和原料比对分子筛合成的影响。 结果表明，硅，钛取代A1POU分子筛能生成AEL结构的TAPOll分子筛;SAPOll与A1POU分子筛表观形貌相 差不大，而TAPOl 1分子筛表观形貌则与A1P041分子筛有很大不同;硅,钛取代后分子筛的孔道半径及其孔容有 所改变;3种分子筛都具有较好的热稳定性。 |
| 关键词: 取代AlPOll分子筛 硅铝比 钛铝比 晶化温度 |
| DOI： |
| 分类号: |
| 基金项目:中国石油天然气股份公司科技攻关项目(02-1752) |
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| Synthesis and characterization of APOll molecular sieves substituted by Si or Ti |
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HU Song-qing1,XU Ben-jing2,YAN Zi-feng2,BAI Xiao-hong3,YU Jing3
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(1. College of Phsical Science and Technology in China University of Petroleum，Dcmgying 257061, Shandong Province，China;2. State Key Laboratory for Heavy Oil Processing in China University of Petroleum，Dongying 257061，Shandong Province, China ;3. Research Institute of Daqing Petrochemical Company? Daqing 163714, Heilongjiang Province, China)
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| Abstract: |
| The synthesis methods of A1PO-11, SAPOll and TAPOll molecular sieves substituted by Si or Ti were proposed. The molecular sieves were characterized by the techniques of X-ray diffraction (XRD), scanning electron microscopy (SEM)，thermo-gravimetric/differential thermal analysis (TG/DTA) and N2-adsorption. The effects of ratio of Si/Al, Ti/ Al and crystallization temperature on synthesis of molecular sieves were discussed. The XRD results show that SAPO and TAPO molecular sieves with AEL structure can be obtained. The SEM results show that there is a great difference between the shapes of A1PO-11 and TAPO-11, and no great difference between the shapes of A1PO-11 and SAPO-II. The BET results show that the pore diameters and pore volumes are influenced by the incorporation of Si or Ti. It also shows that A1PO-11, SAPCMl and TAPOll molecular sieves have good thermal stability. |
| Key words: substituted A1PO-11 molecular sieves ratio of Si/Al ratio of Ti/Al crystallization temperature |
