Immobilized oxo-vanadium Schiff base on graphene oxide as an efficient and recyclable catalyst for the epoxidation of fatty acids and esters
摘要:
以 3-aminopropyltriethoxysilane 为耦合剂,将氧化钒席夫碱共价固定在化学功能化的氧化石墨烯(GO)上。傅立叶变换红外光谱(FTIR)、X射线衍射(XRD)、热重分析(TGA)和电感耦合等离子体原子发射光谱(ICP-AES)证实了钒席夫碱在 GO 纳米片上的负载。研究发现,合成的异相催化剂在以叔丁基过氧化氢(TBHP)为氧化剂进行脂肪酸和酯的环氧化反应时具有高效性和选择性。有趣的是,与均相乙酰丙酮酸香草酯相比,固定化催化剂显示出更高的催化效率。循环实验结果表明,该催化剂具有很高的稳定性,即使在使用六个循环后仍能保持很高的活性和选择性。
An efficient green approach for the biocatalytic epoxidation of fatty compounds derived from soyadeodistillate using Fermase CalB enzyme with hydrogen peroxide under acid free conditions is described.
Industrial resin “INDION 130” modified with vanadyl cations as highly efficient heterogeneous catalyst for epoxidation of fatty compounds with TBHP as oxidant
作者:Praveen K. Khatri、Mounika Aila、Jyoti Porwal、Savita Kaul、Suman L. Jain
DOI:10.1039/c5nj00744e
日期:——
Industrial grade cation-exchange resin “INDION 130” was modified with vanadyl cations by an ion-exchange method and then used for the epoxidation of unsaturated fatty materials including acids, esters and vegetable oils using tert-butyl hydroperoxide (TBHP) in decane as oxidant. The effect of oxidant/double bond ratio, catalyst concentration, recycling of the catalyst and temperature on the conversion
PLASTICIZER COMPOSITION, AND RESIN COMPOSITION COMPRISING SAME
申请人:LG CHEM, LTD.
公开号:EP3805302A1
公开(公告)日:2021-04-14
Provided is a plasticizer composition, comprising: a cyclohexane-1,4-diester-based substance; an epoxidized alkyl ester composition; and a citrate-based substance, and the plasticizer composition is environmentally friendly and has high stability and excellent basic properties.
The present invention relates to a novel plastisol composition that cures at a temperature much lower than conventional plastisols. Also disclosed is a method of applying the composition.