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Citation: LIU Dao-Shing, HAN Chun-Yu, DUAN Lin-Hai, SONG Li-Juan, SUN Zhao-Lin. Activation Energy of Temperature Programmed Desorption Calculated Using Least-SquaresMethod for Benzene, Thiophene and Octane on NaY[J]. Acta Physico-Chimica Sinica, ;2009, 25(03): 470-476. doi: 10.3866/PKU.WHXB20090313 shu

Activation Energy of Temperature Programmed Desorption Calculated Using Least-SquaresMethod for Benzene, Thiophene and Octane on NaY

1.
College of Chemistry & Chemical Engineering, China University of Petroleum (East China), Dongying 257061, Shandong Province, P. R. China; Liaoning Key Laboratory of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, Liaoning Province, P. R. China

Corresponding author: HAN Chun-Yu, DUAN Lin-Hai, SONG Li-Juan, SUN Zhao-Lin, zlsun@lnpu.edu.cn
Received Date: 25 September 2008
Available Online: 30 December 2008

Temperature programmed desorption (TPD) spectra of benzene, thiophene, and octane on NaYat different heating rates were measured and the order of desorption for the TPD was estimated by the shape of TPD spectra and their characteristic differential curves. A new TPD model using least-squares method was proposed, by which the desorption activation energies, as well as the kinetic parameters of the systems, could be calculated. Based on these experimental spectra, desorption activation energies of benzene, thiophene, and octane on NaY were calculated by a traditional model, the least-squares method, and the first differential curve of the TPD model. The results show that the desorption activation energies at different heating rates calculated by the least-squares method agree well with each other.
- Temperature programmed desorption,
- Desorption activation energy,
- Least-squares method
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