Degradation of lindane and hexachlorobenzene in supercritical carbon dioxide using palladium nanoparticles stabilized in microcellular high-density polyethylene

Bei-Zen Wu; GuanYu Chen; HwaKwang Yak; Weisheng Liao; KongHwa Chiu; Shie-Ming Peng

doi:10.1016/j.chemosphere.2016.02.123

Degradation of lindane and hexachlorobenzene in supercritical carbon dioxide using palladium nanoparticles stabilized in microcellular high-density polyethylene

Chemosphere. 2016 Jun:152:345-52. doi: 10.1016/j.chemosphere.2016.02.123. Epub 2016 Mar 16.

Authors

Bei-Zen Wu¹, GuanYu Chen¹, HwaKwang Yak², Weisheng Liao³, KongHwa Chiu⁴, Shie-Ming Peng⁵

Affiliations

¹ Department of Chemistry, National Dong-Hua University, Hualien, 97401, Taiwan, ROC.
² Department of Chemistry, Chung Yuan Christian University, Chung Li, Taoyuan, 32023, Taiwan, ROC.
³ Department of Chemistry, National Dong-Hua University, Hualien, 97401, Taiwan, ROC. Electronic address: liao1427@alumni.uidaho.edu.
⁴ Department of Chemistry, National Dong-Hua University, Hualien, 97401, Taiwan, ROC. Electronic address: ckh@mail.ndhu.edu.tw.
⁵ Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan, ROC.

PMID: 26994428
DOI: 10.1016/j.chemosphere.2016.02.123

Abstract

Palladium nanoparticles stabilized in microcellular high-density polyethylene prepared through supercritical foaming, supercritical impregnation, and H2 reduction are used for the hydrodechlorination of lindane and hexachlorobenzene in supercritical carbon dioxide below 100 °C. Both lindane and hexachlorobenzene can be almost 100% transformed to cyclohexane in 1 h. Reaction intermediates, such as lower chlorinated products or benzene, are not observed or exist in trace amount indicating that most of them may undergo reactions without leaving the metal surface.

Keywords: Hexachlorobenzene; Hydrodechlorination; Lindane; Metal nanoparticles; Microcellular polyolefins; Supercritical carbon dioxide.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carbon Dioxide / chemistry
Catalysis
Hexachlorobenzene / chemistry*
Hexachlorocyclohexane / chemistry*
Metal Nanoparticles / chemistry*
Palladium / chemistry*
Polyethylene / chemistry

Substances

Carbon Dioxide
Hexachlorobenzene
Hexachlorocyclohexane
Palladium
Polyethylene