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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 20, 2010
Accepted May 28, 2010

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Catalytic degradation of high-density polyethylene over SAPO-34 synthesized with various templates

Jong Hwa Park¹ Hyeon Su Heo¹ Young-Kwon Park^{1 2†} Kwang-Eun Jeong³ Ho-Jeong Chae³ Jung Min Sohn⁴ Jong-Ki Jeon⁵ Seung-Soo Kim⁶

¹Graduate School of Energy and Environmental System Engineering, University of Seoul, Seoul 130-743, Korea ²School of Environmental Engineering, University of Seoul, Seoul 130-743, Korea ³Green Chemistry Research Division, KRICT, Daejeon 305-600, Korea ⁴Department of Mineral Resources & Energy Engineering, Chonbuk National University, Jeonju 561-756, Korea ⁵Department of Chemical Engineering, Kongju National University, Cheonan 330-717, Korea ⁶Department of Chemical Engineering, Kangwon National University, Samcheok 245-711, Korea

catalica@uos.ac.kr

Korean Journal of Chemical Engineering, November 2010, 27(6), 1768-1772(5), 10.1007/s11814-010-0281-9

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Abstract

A variety of SAPO-34 catalysts were prepared using various templates, such as tetraethylammonium hydroxide (TEAOH), diethylamine (DEA), and a mixture of TEAOH and DEA, and then applied for the first time to the pyrolysis of high-density polyethylene (HDPE). The crystal morphology and physicochemical properties were affected by the type of template employed. In particular, an inexpensive SAPO-34 catalyst, with good crystal properties and catalytic performance, was obtained using a mixed-template of DEA and TEAOH. Through N2 isotherm, XRD, SEM and NH3 TPD the effects of the mixed-template on the crystal morphology and acidity were investigated. The catalytic activity of SAPO-34 in the pyrolysis of HDPE was improved with the use of a mixed-template, due to the crystal size, surface area and acidity.

Keywords

SAPO-34 High Density Polyethylene Mixed-template Crystal Morphology

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