A non-heme cationic Fe(iii)-complex intercalated in montmorillonite K-10: synthesis, characterization and catalytic alkane hydroxylation with H2O2 at room temperature†,10.1039/C4CY00453A

热搜：

Lactoyl-CoA 全氟丁基戊烷白叶藤碱全氟己基辛烷新白叶藤碱壳寡糖特色专题-生物多肽

A non-heme cationic Fe(iii)-complex intercalated in montmorillonite K-10: synthesis, characterization and catalytic alkane hydroxylation with H2O2 at room temperature†

Anand Pariyar,Suranjana Bose,Achintesh Narayan Biswas,Sudip Barman,Pinaki Bandyopadhyay

Catalysis Science & Technology Pub Date : 05/23/2014 00:00:00 , DOI:10.1039/C4CY00453A

Abstract

A non-heme iron complex cis-[Fe^III(cyclam)Cl₂]Cl (cyclam = 1,4,8,11-tetraazacyclotetradecane) has been intercalated into smectite montmorillonite K-10. The intercalated solid has been characterized using EDXRF, AAS, TGA, PXRD, IR and UV-visible analyses. The heterogeneous iron(III)–cyclam has been found to be capable of hydroxylating C–H bonds as strong as those in cyclohexane (BDE = 99.7 kcal mol⁻¹) using benign H₂O₂ at room temperature. The reactivity of the heterogeneous catalytic system is found to significantly improve in comparison with that of cis-[Fe^III(cyclam)Cl₂]Cl/H₂O₂ under homogeneous conditions. The catalytic reactions are marked by a very high selectivity for alcohols which is comparable with the best known non-heme catalysts with H₂O₂. The results critically reflect the role of the clay matrix surrounding the cationic metal complex in tuning the catalytic activity and selectivity of alkane hydroxylation.