Results 31 to 40 of about 64,444 (333)

Selective decomposition of cyclohexyl hydroperoxide by copper ion-containing quaternary ammonium salts in alkali-free medium

, 2013
A novel catalytic system composed of quaternary ammonium salts and copper (II) chloride was prepared. The catalyst showed high conversion and selectivity in the decomposition of cyclohexyl hydroperoxide to cyclohexanol and cyclohexanone (K/A oil) at room
Sun, Zhiqiang, Xu, Jie, Zheng, Xi, Liu, Junxia, Wang, Min, Ma, Jiping, 徐杰   +6 more
core   +1 more source

(Substituted-quinoline-1-yl) Methylbenzylammonium Chloride: Quaternization Reaction Process, Corrosion Inhibition Behavior, and Calculation Process

Molecules
In this paper, three quinoline-based quaternary ammonium salts were successfully synthesized, with quinoline, 8-hydroxyquinoline, and 8-methoxyquinoline used as raw materials, and benzyl chloride as a quaternization reagent. The as-synthesized quaternary
Jianing Tian, Roman Zinatullin, Jianhua Qian, Yanping Li, Xueming Kang, Junhua Li, Yanan Wang, He Huang, Jinjuan Xing   +8 more
doaj   +1 more source

Estudo da emissão por fluorescência de ultravioleta na quantificação de um inibidor de corrosão do tipo sal de amônio quaternário em água

Química Nova, 2012
Quaternary ammonium salts are the corrosion inhibitors most frequently used by the oil industry. In this study, the ultraviolet fluorescence technique was evaluated for the analysis of a quaternary ammonium salt in water as a corrosion inhibitor.
Herllaine de Almeida Rangel, Fábio Merçon   +1 more
doaj   +1 more source

Biocompatible hydrogels based on quaternary ammonium salts of chitosan with high antimicrobial activity as biocidal agents for disinfection.

Carbohydrate Polymers
The paper reports new hydrogels based on quaternary ammonium salts of chitosan designed as biocidal products. The chitosan derivative was crosslinked with salicylaldehyde via reversible imine bonds and supramolecular self-assemble to give dynamic ...
Bianca-Iustina Andreica, L. Mititelu-Tarțău, I. Roșca, I. Pelin, Erwan Nicol, L. Marin   +5 more
semanticscholar   +1 more source

Kinetics of Quaternary Ammonium Salts Synthesis

Proceedings of the International Conference on Applied Innovations in IT
The aim of this work is to study the synthesis of quaternary ammonium compounds based on olefins and to investigate the structure and properties of the obtained products.
Feruza Makhmudova, Oytura Maksumova
doaj   +1 more source

A Simple Halide-to-Anion Exchange Method for Heteroaromatic Salts and Ionic Liquids

Molecules, 2012
A broad and simple method permitted halide ions in quaternary heteroaromatic and ammonium salts to be exchanged for a variety of anions using an anion exchange resin (A− form) in non-aqueous media.
Neus Mesquida, Anna Ibáñez, Immaculada Dinarès, Ermitas Alcalde   +3 more
doaj   +1 more source

Synthesis, Purification and Characterization of Polymerizable Multifunctional Quaternary Ammonium Compounds

Molecules, 2019
Methacrylate analogs of quaternary ammonium salts functionalized with carboxylic (AMadh1 68.8% yield, AMadh2 53.2% yield) and methoxysilane (AMsil1 94.8% yield, AMsil2 36.0% yield) groups were synthesized via Menschutkin reaction.
Ugochukwu C. Okeke, Chad R. Snyder, Stanislav A. Frukhtbeyn   +2 more
doaj   +1 more source

Catalysis by tertiary chalcogenonium salts

Tetrahedron Chem, 2023
The synthetic utility of onium salts is widely recognized in organic chemistry. Among the wide variety of onium salt compounds, quaternary ammonium and phosphonium salts are known as representative organocatalysts.
Ken Okuno, Ryuichi Nishiyori, Seiji Shirakawa   +2 more
doaj   +1 more source

Durable antibacterial cotton fabrics with good performance enabled by quaternary ammonium salts

Cellulose
For addressing the issue of limited durable antibacterial cotton fabric, this study developed and synthesized quaternary ammonium salt antimicrobial agents. The chemical structure was analyzed by FTIR and 1H NMR.
Qi Ding, Jiang-Long Liu, Yanyan Liu, Wenzhan He, Lin Zhang, Ying-Jun Xu   +5 more
semanticscholar   +1 more source

Metal organic ionic framework based on the ionic metal complex and organic moiety as counter ion: A review

Hybrid Advances, 2022
Metal organic ionic frameworks (MOIFs) or inorgano-organic salts (IOSs) are the product of an ionic interaction between metal ionic complex and opposite organic ion in water, through ion exchange mechanism.
Rakesh Kumar Ameta
doaj   +1 more source