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Citation: LI Yan, SHEN Jianqiang, YANG Guoqing. Adsorption of o-, m-, p-Cresol on Mg-Al Hydrotalcite-like Compound[J]. Chinese Journal of Applied Chemistry, ;2012, 29(7): 788-793. doi: 10.3724/SP.J.1095.2012.00343 shu

Adsorption of o-, m-, p-Cresol on Mg-Al Hydrotalcite-like Compound

1.
Department of Chemistry, Changzhi College, Changzhi 046011, China

Corresponding author: LI Yan,
Received Date: 1 August 2011
Available Online: 19 September 2011
Fund Project: 山西省高校科技开发项目(20091038) (20091038)

Mg-Al hydrotalcite-like compound(HTlc) was prepared by a coprecipitation method.The adsorption behaviors of o-,m-and p-cresol on the Mg-Al HTlc were investigated.The results indicated that the adsorption isotherms of o-,m-and p-cresol on HTlc could be well fitted with the Freundlich equation and the adsorption kinetics could be well described by a pseudo-second-order kinetic.The adsorption rate and adsorption amount of p-cresol on the HTlc is slightly higher than that of o-cresol,which is higher than that of m-cresol at the same equilibrium cresol concentration.The adsorption amounts of o-,m-and p-cresol increased firstly and then decreased with the increasing pH in the rang of 5.00~13.00,increased with the increase of temperature and electrolyte(NaCl) concentration.The adsorption mechanism of cresol on HTlc and the effect of substituent CH₃ position on the adsorption were discussed.
- Mg-Al hydrotalcite-like compound,
- cresol,
- adsorption,
- substituent position
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