Results 81 to 90 of about 41,666 (217)

Nanocluster polyoxomolybdate, (NH4)12[Mo36(NO)4O108(H2O)16] as an efficient catalyst in olefins epoxidation [PDF]

شیمی کاربردی روز, 2016
In this project, epoxidation of olefins using nanocluster polyoxomolybdate, (NH4)12[Mo36(NO)4O108(H2O)16] in presence of  tert- butyl hydroperoxide (TBHP) were studied.
مجتبی امینی
doaj   +1 more source

Solubility and dissociation of ionic liquids in epoxides and cyclic carbonate by molecular dynamics simulation [PDF]

Climate emergency has led to the investigation of CO$_{2}$ valorization routes. A competitive process included in this framework is the catalytic CO$_{2}$ cycloaddition to epoxides, to produce cyclic carbonates. Halide-based Ionic liquids (ILs) have been postulated to be a competitive choice.
arxiv   +1 more source

Quantum Transport in Chemically-modified Two-Dimensional Graphene: From Minimal Conductivity to Anderson Localization [PDF]

, 2011
An efficient computational methodology is used to explore charge transport properties in chemically-modified (and randomly disordered) graphene-based materials. The Hamiltonians of various complex forms of graphene are constructed using tight-binding models enriched by first-principles calculations. These atomistic models are further implemented into a
arxiv   +1 more source

Research Progress in Epoxidation of Light Small-Molecule Olefins

Molecules
Light olefins, as important bulk raw materials in the petrochemical industry, play an irreplaceable role in the development of the manufacturing industry and the economy.
Guanghui Zhao, Tianfu Yang, Jincheng Liu, Xianming Xu, Yulong Wang, Yongjun Zhang, Meng Gao, Chao Xiong, Hongbing Ji   +8 more
doaj   +1 more source

Electrochemical epoxidation enhanced by C2H4 activation and hydroxyl generation at the Ag/SnO2 interface

Nature Communications
Direct electrochemical ethylene (C2H4) epoxidation with water (H2O) represents a promising approach for the production of value-added ethylene oxide (EO) in a sustainable way.
Hao Dong, Ran Luo, Gong Zhang, Lulu Li, Chaoxi Wang, Guodong Sun, Hongyi Wang, Jiachang Liu, Tuo Wang, Zhi-Jian Zhao, Peng Zhang, Jinlong Gong   +11 more
doaj   +1 more source

Lipase-mediated epoxidation of alkenes in supercritical carbon dioxide

Green Chemistry Letters and Reviews, 2018
In this work, supercritical carbon dioxide was used as reaction media in the lipase-mediated epoxidation of alkenes for the first time. Under the optimal conditions (alkene (1 mmol), novozym 435 (15 mg), H2O2 (50% aqueous solution, 1.4 mmol), n-caprylic ...
Jiaxin Zhang, Wenwei Qian, Chunyu Wang, Ziyi Cao, Shanshan Chen, Liu Zhang, Yang Zhang, Lei Wang   +7 more
doaj   +1 more source

Chemical modification of Terminalia catappa L. kernel oil methyl ester using epoxidation-esterification approach, for application as bio-transformer fluid – Physicochemical characterization, kinetics and thermodynamics

Cleaner Chemical Engineering, 2022
Epoxidation-esterification of fatty acid methyl ester obtained from Terminalia catappa L. kernel oil (TCKO), its characterization, kinetics and thermodynamics were the main focus of this study.
Chinedu M. Agu, Kenechi Nwosu-Obieogu, Kingsley A. Ani, Albert C. Agulanna, Solomon O. Iwu-Ejike, Ozioma Onyinye Oguegbu, Matthew C. Menkiti   +6 more
doaj  

The investigation of optimum condition of natural rubber epoxidation reaction in latex phase

Majalah Kulit, Karet, dan Plastik, 2021
Natural rubber (NR) latex epoxidation is a chemical modifcation of natural rubber to produce natural rubber with higher polarity (oil resistant) which is commonly called epoxidized natural rubber (ENR). ENR is produced from the reaction of natural rubber
Norma Arisanti Kinasih, Hani Handayani, Mohammad Irfan Fathurrohman, Asron Ferdian Falaah   +3 more
doaj   +1 more source

Dust evolution, a global view: I. Nano-particles, nascence, nitrogen and natural selection . . . joining the dots [PDF]

RSOS published 2016, 2021
The role and importance of nano-particles for interstellar chemistry and beyond is explored within the framework of The Heterogeneous dust Evolution Model at the IaS (THEMIS), focussing on their active surface chemistry (nascence), the effects of nitrogen doping and the natural selection of interesting nano-particle sub-structures. Nano-particle driven
arxiv  

Direct acetylation of sunflower oil in the presence of boron trioxide catalyst and the adduct usage as the base stock and lubricant additive

Bulletin of the Chemical Society of Ethiopia, 2017
Lubrication properties of sunflower oil have been modified by epoxidation in the first step and acetylation of the obtained epoxide in the second step.
J. Ashrafi, A. Semnani, H. S. Langeroodi, M. Shirani   +3 more
doaj   +1 more source