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题名: Study on thermostability of nanosized ZSM-5 zeolite
作者: Wang, L;  Meng, SH;  Tan, ZC;  Liang, DB;  Guo, XW;  Wang, XS
关键词: nanosized zeolite ;  microsized zeolite ;  ZSM-5 zeolite ;  thermostability ;  specific heat
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2001-09-01
卷: 22, 期:5, 页:491-493
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Nanosized ZSM-5 zeolite was synthesized by hydrothermal method and characterized by XRD and TEM techniques. The specific heat of the nanosized ZSM-5 zeolite was measured in the temperature range from 79 to 370 K, and its enhancement in specific heat was observed as compared with the corresponding microsized zeolite, indicating that the nanosized ZSM-5 zeolite possesses higher surface activity. The thermostability of the samples was determined by differential scanning calorimetric (DSC) and thermogravimetric (TG) techniques. The DSC results showed that, for the nanosized ZSM-5, a broad exothermic peak is observed from 1300 K; for the microsized ZSM-5, the corresponding exothermic peak begins at 1400 K, and a distinct phase transition can be observed at 1620 K. The TG results showed that, for the nanozised ZSM-5, the maximum mass-loss ratio is 6.9%, and two mass-loss stages can be observed in the temperature ranges of 298 similar to 663 K and 923 similar to 1273 K, respectively; for the microsized ZSM-5, the maximum mass-loss ratio is 6.5% and it is more stable than the nanosized ZSM-5.
关键词[WOS]: CRYSTAL SIZE
语种: 英语
WOS记录号: WOS:000171867100021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139041
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China

Recommended Citation:
Wang, L,Meng, SH,Tan, ZC,et al. Study on thermostability of nanosized ZSM-5 zeolite[J]. CHINESE JOURNAL OF CATALYSIS,2001,22(5):491-493.
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