An immobilized molybdenum acetylacetonate complex on expanded starch for the epoxidation of stillingia oil

Abstract

An active heterogeneous, namely molybdenum acetylacetonate complex immobilized on expanded corn starch (ECS-MoO 2 (acac) 2 ), was prepared and its catalytic activity for epoxidation of stillingia oil with tert-butyl hydroperoxide (TBHP) was investigated. The heterogeneous catalysts were characterized using inductively coupled plasma optical emission spectrometry, Fourier transform infrared spectra, thermogravimetry and differential thermal analyses, scanning electron microscopy, N 2 adsorption-desorption and X-ray photoelectron spectroscopy. By using this catalyst, an environmentally benign process for epoxide production in a heterogeneous manner was developed. The catalyst could be recovered easily and reused without significant degradation in activity for at least 5 times. Graphical AbstractEpoxidation of stillingia oil was catalysed by ECS-MoO 2 (acac) 2, presenting high selectivity towards the epoxide as well as excellent catalytic recyclability.

Functionalized expanded corn starch‐anchored Cu(I): An efficient and recyclable catalyst for oxidation of 5‐hydroxymethylfurfural to 2,5‐diformylfuran

“…ECS and ECS‐NH 2 were synthesized using our previously reported procedure . ECS‐SB was prepared via a modified method reported by Xiao and co‐workers .…”

The untold story of starch as a catalyst for organic reactions

“…227 In 2015, Pan's research group presented a starch-Schiff base-Mo(acac) 2 catalyst for the epoxidation of stillingia oil as a vegetable oil using tert-butyl hydroperoxide (TBHP) as an oxidizing agent (Scheme 79). 228 2.5.19.5 Oxidation of sulfoxides. Sulfoxides are valuable targets in synthetic and medicinal chemistry and the oxidation of sulde is one of the easiest ways to prepare these compounds.…”

“…227 In 2015, Pan's research group presented a starch-Schiff base-Mo(acac) 2 catalyst for the epoxidation of stillingia oil as a vegetable oil using tert -butyl hydroperoxide (TBHP) as an oxidizing agent (Scheme 79). 228…”

A New Green Method for the Production Polyvinylchloride Plasticizers from Fatty Acid Methyl Esters of Vegetable Oils

“…The environmental friendliness of epoxidized fatty acids, or their esters, is compromised, largely due to the significant disadvantages of the method of their production: formation of acid wastewater, the corrosiveness of peracids, explosiveness, and the high cost of concentrated solutions of hydrogen peroxide. Other methods for the production of epoxidized compounds are also associated with the use of toxic and explosive organic hydroperoxides (Guidotti et al, 2003; Hong et al, 2015; Satyarthi and Srinivas, 2011; Scotti et al, 2015; Sobczak and Ziółkowski, 2003; Ucciani et al, 1993), or hydrogen peroxide (Cai et al, 2009; Du et al, 2004; Gerbase et al, 2002; Mandelli et al, 2012; Poli et al, 2009; Poli et al, 2010; Tiozzo et al, 2013; Torres et al, 2012; Torres et al, 2012; Wilde et al, 2012; Yasushi et al, 1986), which is explosive and expensive as a concentrated solution.…”