Cu/Mg/Al hydrotalcite-like hydroxide catalysts for o-phenylphenol synthesis

Cu-Mg-Al layered double hydroxides with different amounts of Cu were prepared by the hydrothermal crystallization method. The samples were characterized by XRD and SEM, which confirmed the formation of layered double hydroxides phase. The hydrotalcite materials and their calcined counterparts are fu...

Full description

Saved in:
Bibliographic Details
Published in:Applied clay science 2016-06, Vol.126, p.207-214
Main Authors: Zeng, Yongping, Zhang, Tianchi, Xu, Yueyang, Ye, Ting, Wang, Rongrong, Yang, Zhenwei, Jia, Zhehua, Ju, Shengui
Format: Article
Language:English
Subjects:
Aluminum
Catalysis
Catalysts
Cu-Mg-Al catalysts
Dehydrogenation
High dispersivity
Hydrotalcite
Hydroxides
Magnesium
Ortho-phenylphenol
Reduction
Roasting
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Cu-Mg-Al layered double hydroxides with different amounts of Cu were prepared by the hydrothermal crystallization method. The samples were characterized by XRD and SEM, which confirmed the formation of layered double hydroxides phase. The hydrotalcite materials and their calcined counterparts are further characterized by FT-IR, thermogravimetric, N2 adsorption-desorption, CO2-TPD and temperature-programmed reduction with H2. The Cu/Mg/Al mixed oxide catalysts obtained via thermal decomposition of hydroxides precursor, were used for dehydrogenation of 2-(1-cyclohexenyl). The catalytic measurements conclude that the selectivity to ortho-phenylphenol (OPP) depends on the dispersion of cooper for these catalysts. [Display omitted] •o-Phenylphenol synthesis using hydrotalcite-like catalyst precursors is reported.•The Cu content has a significant effect on dispersion of active centers.•The catalyst exhibited good activity attributed to well-dispersion of copper species.
ISSN:0169-1317
1872-9053
DOI:10.1016/j.clay.2016.03.017