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OALib Journal期刊
ISSN: 2333-9721
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单一微孔模板剂一锅法制备多级结构ZSM-5沸石
DOI: 10.1016/S1872-2067(14)60263-1, PP. 866-873
葛同广, 华子乐, 贺晓耘, 朱颜, 任文超, 陈立松, 张玲霞, 陈航榕, 林初城, 姚鹤良, 施剑林
Keywords: 多级结构沸石,ZSM-5,单一模板,碱刻蚀,催化
Abstract:
？以微孔模板剂四丙基氢氧化铵为单一模板剂,采用一种温和的低温水热一锅法工艺,成功制备出多级结构ZSM-5沸石(HSZs).与传统的双模板法和后处理法相比,这种结合了沸石生长与后刻蚀于一体的新方法,不仅减少了模板剂的用量及二次酸/碱刻蚀、煅烧造成的环境污染,同时也极大地简化了合成工艺.利用XRD,N2吸附,SEM,TEM,XRF,27AlNMR与NH3-TPD等测试手段对合成的HSZs进行了全面表征,并提出了一种"成核/生长-刻蚀/再晶化"的形成机理.与传统ZSM-5沸石相比,这种具有均一梭型形貌的HSZs具有高的水热稳定性,并在三异丙苯催化裂解的探针反应中表现出优异催化性能和较长使用寿命.
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