Results 81 to 90 of about 16,085 (237)

Corrosion Inhibition Properties of Corrosion Inhibitors to under-Deposit Corrosion of X65 Steel in CO₂ Corrosion Conditions

Molecules
Under-deposit corrosion is widely present in the pipelines of oil and gas production, causing significant corrosion damage. In this paper, a novel electrochemical cathodic-polarization method was carried out to accelerate the formation of CaCO3 scale on ...
Hai Lin, Xiaorong Chen, Zhongming Luo, Jun Xu, Ping Lu, Tianyi Xie, Jiayi Tang, Hu Wang   +7 more
doaj   +1 more source

Crystal structure of 1-[(1-methyl-5-nitro-1H-imidazol-2-yl)methyl]pyridinium iodide

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title salt, C10H11N4O2+·I−, the asymmetric unit consists of a pyridinium cation bearning a (1-methyl-5-nitro-1H-imidazol-2-yl)methyl group at the N position and an iodide anion.
Roumaissa Belguedj, Abdelmalek Bouraiou, Hocine Merazig, Ali Belfaitah, Sofiane Bouacida   +4 more
doaj   +1 more source

Poly(pyridinium salt)s with Organic Counterions Derived from 3,3′-dimethylnaphthidine: Thermal, Liquid Crystalline, and Optical Properties [PDF]

, 2015
A poly(pyridinium salt) was synthesized from 4,4′-(1,4-phenylene)bis(2,6-diphenylpyrilium)tosylate and 3,3′-dimethylnaphthidine. Tosylate counterion was exchanged with other organic counterions such as triflimide, 1-napthalenesulfonate, and 2 ...
Jose, Robin, Truong, Dat, Bhowmik, Pradip K., Han, Haesook   +3 more
core   +1 more source

Porous Carbon Materials for Carbon Dioxide Capture

Carbon Energy, EarlyView.
This work aims to address the current status and challenges associated with the regulation of pore structures, as well as the influence of pore structures on CO2 capture. Systematic quantitative analysis of structure–property relationships, combined with machine learning approaches, can effectively evaluate the contributions of structural ...
Zhifu Liu, Chuhan Fu, Tao Qi, Hui Zhou, Guangping Hao, Yalou Guo, Guoping Hu   +6 more
wiley   +1 more source

Crystal structure of 4-carbamoylpyridinium chloride

Acta Crystallographica Section E: Crystallographic Communications, 2016
The hydrochloride salt of isonicotinamide, C6H7N2O+·Cl−, has been synthesized from a dilute solution of hydrochloric acid in acetonitrile. The compound displays monoclinic symmetry (space group C2/c) at 150 K, similar to the related hydrochloride salt of
Simon M. Fellows, Timothy J. Prior
doaj   +1 more source

Bioinspired Design and Synthesis of Polyphenolic Star‐Like and Hyperbranched Polyester Models

Chemistry – A European Journal, EarlyView.
Gallotannin‐inspired star‐like and hyperbranched aromatic polyesters were synthesized from D‐glucose and ABn‐type phenolic acid monomers, such as protocatechuic acid. This bioinspired approach afforded polyphenolic polymeric nanoparticles able to encapsulate hydrophobic dyes, opening new perspectives for biobased encapsulation and delivery systems ...
Guanfei Shen, Laurent Pouységu, Christophe Schatz, Etienne Grau, Stéphane Quideau   +4 more
wiley   +1 more source

Preparation of the Pyridinium Salts Differing in the Length of the N-Alkyl Substituent

Molecules, 2010
Quaternary pyridinium salts with chains ranging from C8 to C20 belong in the large group of cationic surfactants. In this paper, the preparation of such cationic surface active agents based on the pyridinium moiety and differing in the length of the N ...
Kamil Musilek, Jan Korabecny, Miroslav Pohanka, Ondrej Soukup, Jiri Cabal, Petr Stodulka, Jan Marek, Kamil Kuca   +7 more
doaj   +1 more source

Photosensitizing Au(I) Catalysis With Coumarins

Chemistry – A European Journal, EarlyView.
A Au(I) complex with a tethered coumarin fragment was synthesized and characterized by UV‐vis and emission spectroscopy. Its ability to facilitate photo‐driven cross‐coupling reactions through single‐electron and energy transfer events was evaluated. ABSTRACT Gold catalysis shows versatility in a wide range of challenging transformations, wherein light‐
Liliana Capulín Flores, Jacob J. van der Wal, Johannes E. M. N. Klein   +2 more
wiley   +1 more source

Modified Fry Cyanation of a Chiral Pyridinium Salt: Asymmetric Syntheses of (-)-Coniine and (-)-Solenopsin A [PDF]

, 2013
International audienceThe synthesis of chiral 2-cyano-Δ4-tetrahydropyridine 5 was carried out in 85 % yield through a modified two-step Fry reductive cyanation of pyridinium salt (+)-3c that used lithium triethylborohydride as the hydride donor.
Jouanno, Laurie-Anne, Sourisak Sinbandhit, Thierry Roisnel, Dorcet, Vincent, Van Ha Vu, Vu, Van, Ha, Hurvois, Jean-Pierre, Adèle Cheignon, Jean‐Pierre Hurvois, Roisnel, Thierry, Vincent Dorcet, Cheignon, Adèle, Sinbandhit, Sourisak, Laurie‐Anne Jouanno   +13 more
core   +1 more source

Single‐Step Synthesis of Dithieno[3,2‐b:2′,3′‐e]Pyridines and Their Acid‐Dependent Optical and Photosensitising Properties

Chemistry – A European Journal, EarlyView.
The synthesis of dithieno[3,2‐b:2′,3′‐e]pyridines (DTPs) is herein reported, and their optical properties are studied both experimentally and computationally. Protonation or methylation of the nitrogen atom induced bathochromic shifts in their absorption and emission spectra.
Dominic Taylor, Matthew Wallace, Leonardo Amicosante, Gary S. Nichol, Scott J. Dalgarno, Filipe Vilela, Iain A. Wright, Neil B. McKeown   +7 more
wiley   +1 more source