nucleophilic substitution is the dominant degradation pathway in NHAs, while Hofmann elimination is the primary degradation pathway for NHA-based AEMs. Different degradation pathways determine the alkaline stability of NHAs or NHA-based AEMs. AEMFC durability (from 1 A cm−2 to 3 A cm−2) suggests that NHA-based AEMs are mainly subjected to Hofmann elimination under 1 A cm−2 current density for 1000 h, providing
N-杂环铵 (NHA) 基团的碱性稳定性是阴离子交换膜 (AEM) 和 AEM 燃料电池 (AEMFC) 的关键课题。在这里,我们报告了对 24 个代表性 NHA 基团在不同水合数(λ) 在 80 °C。结果表明,含有给电子基团的 γ 取代 NHA 显示出优异的碱性稳定性,而吸电子取代基对耐久的 NHA 有害。密度泛函理论计算和实验结果表明,亲核取代是 NHA 的主要降解途径,而霍夫曼消除是基于 NHA 的 AEM 的主要降解途径。不同的降解途径决定了 NHA 或基于 NHA 的 AEM 的碱性稳定性。AEMFC 耐久性(从 1 A cm -2到 3 A cm -2)表明基于 NHA 的 AEM 主要在 1 A cm -2电流密度下进行 1000 小时的霍夫曼消除,从而深入了解电流密度与λ之间的关系 基于 NHA 的 AEM 的价值和耐久性。
[EN] CATIONIC COMPOUNDS AND THEIR USE AS ANTIMYCOTIC AND ANTIMICROBIAL AGENTS<br/>[FR] COMPOSÉS CATIONIQUES ET LEUR UTILISATION COMME AGENTS ANTIMYCOTIQUES ET ANTIMICROBIENS
申请人:CHIROBLOCK GMBH
公开号:WO2017032509A1
公开(公告)日:2017-03-02
The invention relates to cationic compounds and their use as antimicrobial and antimycotic agents, in particular as disinfectants and preservatives in ophthalmic preparations.
这项发明涉及阳离子化合物及其作为抗菌和抗真菌剂的用途,特别是作为眼科制剂中的消毒剂和防腐剂。
Novel Anthra [1, 2-d]imidazole-6,11-dione Derivatives, Preparation Method and application thereof
申请人:HUANG Hsu-Shan
公开号:US20110207719A1
公开(公告)日:2011-08-25
A series of novel anthra[1,2-d]imidazole-6,11-dione derivatives, and the preparation method and application of said derivatives, wherein said application includes a pharmaceutical composition containing said derivatives for treating cancer, and said application involves effects of said derivatives for inhibiting telomerase activity, inhibiting the growth of cancer cell, treating cancer and the like.
Light-promoted N,N-dimethylation of amine and nitro compound with methanol catalyzed by Pd/TiO<sub>2</sub> at room temperature
作者:Lina Zhang、Yan Zhang、Youquan Deng、Feng Shi
DOI:10.1039/c4ra13848a
日期:——
The N,N-dimethylation of different amines and nitro compounds with methanol were realized under UV irradiation at room temperature catalyzed by Pd/TiO2.
不同胺类和硝基化合物在室温下经Pd/TiO2催化,通过紫外辐射实现了甲醇的N,N-二甲基化。
N-Methylation of amine and nitro compounds with CO<sub>2</sub>/H<sub>2</sub>catalyzed by Pd/CuZrO<sub>x</sub>under mild reaction conditions
作者:Xinjiang Cui、Yan Zhang、Youquan Deng、Feng Shi
DOI:10.1039/c4cc05119j
日期:——
An active Pd/ZrCuOx catalyst was prepared for the reductive amination of CO2. The N-methylation of amines and nitro compounds with CO2/H2 can be realized with up to 97% yield under relatively mild reaction conditions. N-Formylation becomes the main reaction if the reaction was performed under milder conditions or using Pd/ZnZrOx as the catalyst.