用GC-MSD和TPDE 方法探讨KNO3在KL沸石上的分解

journal6 ›› 2001, Vol. 22 ›› Issue (2): 33-35.

用GC-MSD和TPDE 方法探讨KNO₃在KL沸石上的分解

(南京大学化学系, 江苏南京 210093)

出版日期:2001-06-15 发布日期:2013-01-05

Exploring the Decomposition of KNO₃ Supported on Zeolite KL by Use of GC- MSD and TPDE Methods

( Department of Chemistry , Nanji ng University, Nanjing 210093, China)

Online:2001-06-15 Published:2013-01-05
About author:XUE Jun( 1965 - ) , male, senior engineer, MSc student in department of chemistry, Nanjing University. Studying area: functional solid basic materials and environment protection. ZHU Jian - hua( 1954- ) , male, professor, supervisor for PhD students in the fepar tment of chemistry, Nanji ng University . Studying area: zeolite catalysis, functional solid basic materials, and environment protection.
Supported by:
Supported by National AdvancedMaterials Committee of China( 715- 04- 0120)

摘要/Abstract

摘要：采用较为普及的GC- MSD结合TPDE方法研究了KNO₃在沸石上热分解的产物分布从K₂CO₃ / KL的 TPDE 入手,首先证明了GC- MSD 方法的可靠性和重复性;通过负载 5, 10和 30 wt. - %KNO₃ 的KL沸石上 KNO3热分解产物的辨认和分析,推断 KNO₃在沸石上的分解大致可分为 2 个阶段:第一阶段在 600 ℃ 以下发生, 主要产生N₂O 和NO 及 N₂ ;第二阶段的主要产物是NO₂,发生在 600 ℃以上的高温区. 通过剖析分解第一阶段产物中 N₂ 和 NO 之比,发现产生较多的 N₂, 进而推断KNO₃ 在KL沸石分解会产生较多的钾氧化物而促成强碱位的形成.结果表明, 沸石与负载的 KNO3之间的相互作用是影响KNO₃ 分解、乃至形成超强碱新材料的重要因素.

关键词： TPDE-MS方法, KNO₃ 分解, KL沸石, 固体超强碱

Abstract: A new method combined gas chromatograph-mass detector ( GC - MSD) and temperature-programmed decomposition (TPDE) is firstly applied to explore the decomposition of KNO₃ supported on zeolite KL. Different pyrolysis process is thus found depending on the amount of KNO₃ supported.

Key words: TPDE- MS method, Decomposition of KNO₃, Zeolite KL, Solid superbase

薛军, 朱建华, 淳远. 用GC-MSD和TPDE 方法探讨KNO₃在KL沸石上的分解[J]. journal6, 2001, 22(2): 33-35.

XUE Jun, ZHU Jian-Hua, CHUN Yuan. Exploring the Decomposition of KNO₃ Supported on Zeolite KL by Use of GC- MSD and TPDE Methods[J]. journal6, 2001, 22(2): 33-35.

用GC-MSD和TPDE 方法探讨KNO₃在KL沸石上的分解

Exploring the Decomposition of KNO₃ Supported on Zeolite KL by Use of GC- MSD and TPDE Methods

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