Temperature programmed desorption of n-hexane and n-heptane from MFI and FAU zeolites

被引：14
|
作者：
Makowski, Waclaw
Majda, Dorota
机构：
[1] Jagiellonian Univ, Fac Chem, PL-30060 Krakow, Poland
[2] Jagiellonian Univ, Reg Lab Physiochem Anal & Struct Res, PL-30060 Krakow, Poland
来源：
JOURNAL OF POROUS MATERIALS | 2007年 / 14卷 / 01期
关键词：
adsorption; temperature programmed desorption; zeolites; n-hexane; n-heptane; ELEMENT OSCILLATING MICROBALANCE; HYDROCARBON SORPTION PROPERTIES; INVERSE GAS-CHROMATOGRAPHY; BRANCHED C-6 ALKANES; EQUILIBRATED THERMODESORPTION; THERMODYNAMIC PARAMETERS; ADSORPTION; ZSM-5; SILICALITE-1; CRYSTALS;
D O I：
10.1007/s10934-006-9004-3
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
TPD studies of n-hexane and n-heptane from NaX, Y and ZSM-5 (Na+ or H+ exchanged) in the experimental system with a TCD detector were performed, using pure He or He/n-alkane mixture as a carrier gas. The TPD profiles with one desorption peak for Y and two peaks for ZSM-5, measured using He/hydrocarbon mixture, were similar to the previously reported equilibrated thermodesorption results. TPD profiles were accurately fitted with a model based on the equilibrium control of the desorption and the adsorption functions derived from the Langmuir or dual site Langmuir isotherms.
引用
收藏
页码：27 / 35
页数：9
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