For Libraries For Publication Open Access Downloads About Us Contact Us
Paper Titles
Study of the Prospects of the Use of High-Strength Steel Shapes
p.1253
Study on Novel Relaxor Ferroelectric Single Crystal PMNT/Epoxy Composite
p.1257
Study on Preparation and Properties of MRP/HDPE Composite
p.1262
Research of Influence Thickness of Nanocrystalline VOx Films on their Electrical Properties
p.1266
Acid Strength Measurement of Zeolites by the TPD-IR Technique with Ammonia as Probe Molecule
p.1270
Effect on LY12 Aluminum Alloy Welding Joint Microstructure and Properties with Electron Beam Welding Technical Parameters
p.1275
Deposition and Characterization of Boron Doped ZnO Thin Films by Ultrasonic Spray Pyrolysis Method
p.1280
Research on Simulation of Cartridge Backward Spinning Process
p.1284
Research on the Demulsifier and Decalcifying Agent for Crude Oils in Electric Desalting Process
p.1289

Acid Strength Measurement of Zeolites by the TPD-IR Technique with Ammonia as Probe Molecule

Article Preview

Abstract:

An improved TPD-IR technique was developed recently. By which means, acid properties of Brønsted acid sites on HY zeolite and SAPO-34 zeolite were studied by an advanced TPD-IR technique with ammonia as probe molecule. Desorption activation energy (DAE) of the probe molecule adsorbed on zeolite was used as a measure of the acid strength. The result indicates the Brønsted acid sites of HY Zeolite or SAPO-34 zeolite were divided into two types with the strength of DAE of ammonia 43.4KJ/mol, 24.4KJ/mol and 33.2KJ/mol, 20.5KJ/mol. It is concluded that HY zeolite has the stronger Brønsted acid sites than that of SAPO-34 zeolite.

You might also be interested in these eBooks
Sensors, Measurement and Intelligent Materials II View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 475-476)

Pages:

1270-1274

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.475-476.1270

Citation:

Cite this paper

Online since:

December 2013

Authors:

Bin Wang*, Ying Zhang, Fu Bo Gu, Min Zuo, Guang Sheng Guo

Keywords:

Acid Strength, Brønsted Acid Site, Desorption Activation Energy, TPD-IR, Zeolite

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

References

[1] Walling, C. J. Am. Chem. Soc. 72 (1950), p.1164.

Google Scholar

[2] Yori, J. C.; Krasnogor, L. M.; Castro, A. A. React. Kinet. Catal. Lett. 32 (1986), p.27.

Google Scholar

[3] Furuta, S.; Matsuhashi, H.; Arata, K. Appl. Catal. A. 269 (2004), p.187.

Google Scholar

[4] Yin, C.; Liu, C. Appl. Catal. A. 273 (2004), p.177.

Google Scholar

[5] Sang, S.; Chang ,F.; Liu, Z. Catal. Today. 93 (2004), p.729.

Google Scholar

[6] Liu, C.; Gao X.; Zhang, Z. Appl Catal. A. 264 (2004), p.225.

Google Scholar

[7] Umansky, B. S.; Hall, W. K. J. Catal. 124 (1990), p.97.

Google Scholar

[8] Suzuki, K.; Noda, T.; Katada, N.; Niwa, M. J. Catal. 250 (2007), p.151.

Google Scholar

[9] Parrillo, D. J.; Gorte, R. J.; Farneth, W. E. J. Am. Chem. Soc. 115 (1993), p.12441.

Google Scholar

[10] Busca, G. Phys. Chem. Chem. Phys. 1 (1999), p.723.

Google Scholar

[11] Hunger, M. Solid State Nucl. Magn. Reson. 6 (1996), p.1.

Google Scholar

[12] Haw, J. F.; Xu, T. Adv. Catal. 42 (1998), p.115.

Google Scholar

[13] Schweckendiek, J. Ph.D. Dissertation, University of Bremen, (1982).

Google Scholar

[14] Li, Q.; Xue, Z.; Zhu L. Acta Chim. Sinica. 47 (1989), p.947.

Google Scholar

[15] King, D. A. Surf. Sci. 47 (1975), p.384.

Google Scholar

[16] Falconer, J. L.; Madix, R. J. Surf. Sci. 48 (1975), p.393.

Google Scholar

[17] Hickmott, T. W.; Ehrlich, G. J. Phys. Chem. Sol. (5) 1958, p.47.

Google Scholar

© 2025 Trans Tech Publications Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For open access content, terms of the Creative Commons licensing CC-BY are applied.
Scientific.Net is a registered trademark of Trans Tech Publications Ltd.