Synthesis and catalytic activity of organic–inorganic hybrid catalysts coordinated with cobalt(II) ions for aerobic epoxidation of styrene

New organic–inorganic hybrid materials (HM) containing 3-mercaptopropyl groups (–(CH2)3–SH) have been synthesized through a dry gel conversion (DGC) route. The complex catalyst Co–HM was prepared through a simple coordination of –SH with cobalt(II) ions, which was firstly applied in the aerobic epox...

Full description

Saved in:

Bibliographic Details
Published in:	Catalysis communications 2015-02, Vol.61, p.48-52
Main Authors:	Wei, X.-L., Lu, X.-H., Ma, X.-T., Peng, C., Jiang, H.-Z., Zhou, D., Xia, Q.-H.
Format:	Article
Language:	eng
Subjects:	Air Co–HM-50 Epoxidation Organic–inorganic hybrid material Styrene
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	New organic–inorganic hybrid materials (HM) containing 3-mercaptopropyl groups (–(CH2)3–SH) have been synthesized through a dry gel conversion (DGC) route. The complex catalyst Co–HM was prepared through a simple coordination of –SH with cobalt(II) ions, which was firstly applied in the aerobic epoxidation of alkenes to obtain good results. Co–HM-50 exhibited the highest activity for the epoxidation of styrene with air to achieve 95.8mol% of conversion with the epoxide selectivity of 89.2%. Recycling and control tests showed high durability and heterogeneity of Co–HM-50 as a heterogeneous catalyst. [Display omitted] •Hybrid Co–HM was prepared via DGC synthesis and coordination with Co2+ ions.•Co–HM was firstly applied in the aerobic epoxidation of alkenes.•Co-coordinated organic–inorganic hybrid material Co–HM-50 was the most active.•The best result was 95.8mol% conversion of styrene with 89.2% epoxide selectivity.•The catalysts are highly reusable heterogeneous catalysts.
ISSN:	1566-7367 1873-3905