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Versatile synthesis of cadalene and iso-cadalene from himachalene mixtures:Evidence and application of unprecedented rearrangements

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Chinese Chemical Letters 2020年第7期31卷 1851-1854页

作者： Mustapha Ait El Had Abdelouahd Oukhrib Mohamed Zaki Martine Urrutigoity Ahmed Benharref Remi Chauvin laboratoire de Chimie Biomoleculaire Substances Naturelies et Reactivite(URAC 16)Faculte des Sciences SemlaliaUniversite Cadi AyyadB.P.2390MarrakechMorocco CNRS LCC(Laboratoire de Chimie de Coordination)BP 4409931077Toulouse Cedex 4France INP-ENSIACet 4 allee Emile Monso31030Toulouse CedexFrance Universite de Toulouse UPSICT-FR 259931062Toulouse Cedex 9France

From a mixture of α-,β-and y-himachalenes extracted from waste wood of Atlas cedar(Cedrus atlantica),cadalene(1,6-dimethyl-4-isopropylnaphthalene)and iso-cadalene(1,6-dimethyl-3-isopropylnaphthalene)were produced in two steps with up to 71%±5%yield through the ar-himachalene intermediate using I2 and/or AlCl3 as *** selectivity is shown to sharply depend on the operating conditions:while I2/AlCl3 in dichloromethane promotes the formation of cadalene,the formation of iso-cadalene is favored in the presence of AlCl3 in *** bicyclic aromatic compounds were thus obtained through unique rearrangements involving sequential C—C bond cleavage/fo rmation and hydride transfer *** the absence of AlCl3 or I2,dihydrocurcumene was also found to be formed with up to 70%selectivity.A tentative mechanism is proposed and discussed.

关键词： Aromatic reactivity Cadalenes Dihydrocurcumene Himachalenes Rearrangements

NitroMAC：An instrument for the measurement of HONO and intercomparison with a long-path absorption photometer

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Journal of Environmental Sciences 2016年第2期28卷 105-113页

作者： Charbel Afif Corinne Jambert Vincent Michoud Aurélie Colomb Gregory Eyglunent Agnès Borbon Véronique Daele Jean-Francois Doussin Pascal Perros Emissions Measurements and Modeling of the Atmosphere Laboratory EGFEM Unit Center for Analysis and Research Faculty of SciencesSaint Joseph University Beirut Lebanon laboratoire Interuniversitaire des Systemes Atmospheriques (LISA) UMR7583 CNRS Universite Paris-Est-Creteil (UPEC) et Universite Paris Diderot (UPD) Institut Pierre Simon Laplace (IPSL) Creteil France Institut de Combustion Aerothermique Reactivite et Environnement CNRS Orleans France

Nitro MAC（French acronym for continuous atmospheric measurements of nitrogenous compounds） is an instrument which has been developed for the semi-continuous measurement of atmospheric nitrous acid（HONO）. This instrument relies on wet chemical sampling and detection using high performance liquid chromatography（HPLC）-visible absorption at540 nm. Sampling proceeds by dissolution of gaseous HONO in a phosphate buffer solution followed by derivatization with sulfanilamide/N-（1-naphthyl）-ethylenediamine. The performance of this instrument was found to be as follows： a detection limit of around 3 ppt with measurement uncertainty of 10% over an analysis time of 10 min. Intercomparison was made between the instrument and a long-path absorption photometer（LOPAP） during two experiments in different environments. First, air was sampled in a smog chamber with concentrations up to 18 ppb of nitrous acid. Nitro MAC and LOPAP measurements showed very good agreement. Then, in a second experiment, ambient air with HONO concentrations below250 ppt was sampled. While Nitro MAC showed its capability of measuring HONO in moderate and highly polluted environments, the intercomparison results in ambient air highlighted that corrections must be made for minor interferences when low concentrations are measured.

关键词： Atmospheric measurements Nitrous acid Sulfanilamide/N-(1-naphthyl)-ethylenediamine Long-path absorption photometer French acronym for continuous atmospheric measurements of nitrogenous compounds(NitroMAC)

Molten salts-modified MgO-based adsorbents for intermediate-temperature CO_2 capture: A review

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Journal of Energy Chemistry 2017年第5期26卷 830-838页

作者： Wanlin Gao Tuantuan Zhou Yanshan Gao Benoit Louis dermot O'Hare Qiang Wang College of Environmental Science and Engineering Beijing Forestry University， Beijing 100083 China laboratoire de Synthese Reactivite Organiques et Catalyse Institut de Chimie UMR 7177 Universite de Strasbourg1 rue Blaise Pascal 67000 StrasbourgFrance Chemistry Research Laboratory Department of Chemistry University of Oxford Mansﬁeld Road Oxford OX1 3TA United Kingdom

Carbon dioxide（CO2） capture using magnesium oxide（MgO）-based adsorbents at intermediate temperatures has been regarded as a very prospective technology for their relatively high adsorption capacity,low cost, and wide availability. During the past few years, great effort has been devoted to the fabrication of molten salts-modified MgO-based adsorbents. The extraordinary progress achieved by coating with molten salts greatly promotes the COcapture capacity of MgO-based adsorbents. Therefore, we feel it necessary to deliver a timely review on this type of COcapturing materials, which will benefit the researchers working in both academic and industrial areas. In this work, we classified the molten saltsmodified MgO adsorbents into four categories:（1） homogenous molten salt-modified MgO adsorbents,（2） molten salt-modified double salts-based MgO adsorbents,（3） mixed molten salts-modified MgO adsorbents, and（4） molten salts-modified MgO-based mixed oxides adsorbents. This contribution critically reviews the recent developments in the synthetic method, adsorption capacity, reaction kinetics, promotion mechanism, operational conditions and regenerability of the molten salts-modified MgO COadsorbents. The challenges and prospects in this promising field of molten salts-modified MgO COadsorbents in real applications are also briefly mentioned.

关键词： Global warming Magnesium oxide CO2 adsorption Molten salts Intermediate temperatures

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层状硅酸盐Magadiite的层板剥离

科学通报 2010年第4期55卷 391-395页

作者：毕云飞 BLANCHARD Juliette LAMBERT Jean-Francois 曾双亲聂红李大东李明丰杨清河陈小新石油化工科学研究院北京100083 laboratoire de reactivite de Surface Universite Pierre et Marie Curie4Place Jussieu

以十六烷基三甲基溴化胺和四丙基氢氧化铵为膨化剂,利用超声波的空化作用将合成的层状硅酸盐Magadiite进行层板剥离,从而制备了一种新型介孔材料.采用了XRD、氮气吸附、NMR,IR,SEM和TEM等表征工具对这种材料的结构和形貌进行了详细的表... 详细信息

以十六烷基三甲基溴化胺和四丙基氢氧化铵为膨化剂,利用超声波的空化作用将合成的层状硅酸盐Magadiite进行层板剥离,从而制备了一种新型介孔材料.采用了XRD、氮气吸附、NMR,IR,SEM和TEM等表征工具对这种材料的结构和形貌进行了详细的表征.研究结果表明:这种材料在长程上是无序的而在短程上是有序的.此外,这种新型介孔材料不仅具有高的比表面,而且约有一半的部分是外表面.形貌观察进一步表明这种介孔材料的孔壁是由不规则的单个晶体片层组成.由于这些结构特点,这种新型介孔材料同时满足了孔壁晶体化,良好的大分子可接近性的要求.

关键词： Magadiite 膨化超声处理层板剥离介孔材料

Machine learning-based assessment of the impact of the manufacturing process on battery electrode heterogeneity

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Energy and AI 2021年第3期5卷 150-158页

作者： Marc Duquesnoy Iker Boyano Larraitz Ganborena Pablo Cereijo Elixabete Ayerbe Alejandro A.Franco laboratoire de reactivite et Chimie des Solides(LRCS) UMR CNRS 7314Universite de Picardie Jules VerneHub de l’Energie15rue Baudelocque80039 Amiens CedexFrance Reseau sur le Stockage Electrochimique de l’Energie(RS2E) FR CNRS 3459Hub de l’Energie15rue Baudelocque80039 Amiens CedexFrance ALISTORE-European Research Institute FR CNRS 3104Hub de l’Energie15rue BaudelocqueAmiens Cedex80039France CIdeTEC Basque Research and Technology Alliance(BRTA)P◦Miram´on 19620014 Donostia-San SebastianSpain Institut Universitaire de France 103 Boulevard Saint Michel75005 ParisFrance

Electrode manufacturing process strongly impacts lithium-ion battery *** electrode slurry properties and the coating parameters are among the main factors influencing the electrode heterogeneity which impacts the battery cell performance and ***,the analysis of the impact of electrode manufacturing parameters on the electrode heterogeneity is difficult to be quantified and automatized due to the large number of parameters that can be adjusted in the *** this work,a data-driven methodology was developed for automatic assessment of the impact of parameters such as the formulation and liquid-to-solid ratio in the slurry,and the gap used for its coating on the current collector,on the electrodes heterogeneity.A dataset generated by experimental measurements was used for training and testing a Machine Learning(ML)classifier namely Gaussian Naives Bayes algorithm,for predicting if an electrode is homogeneous or heterogeneous depending on the manufacturing ***,through a 2D representation,the impact of the manufacturing parameters on the electrode heterogeneity was assessed in detail,paving the way towards a powerful tool for the optimization of next generation of battery electrodes.

关键词： Machine learning Electrode manufacturing Battery Heterogeneity Data analysis

Ce(SO4)2对化学镀镍液及镀层性能的影响

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稀有金属快报 2008年第11期27卷 27-31页

作者：伊廷锋朱彦荣周理李鹏 Shu Jie 安徽工业大学安徽马鞍山243002 laboratoire de reactivite et Chimie des Solides(LRCS) UMR-CNRS6007

采用电化学方法研究了Ce(SO4)2对化学镀镍液及镀层性能的影响。结果表明:Ce(SO4)2的添加总体上提高了化学镀镍层的耐腐蚀性能和沉积速率,当加入量为2mg·L-1时,镀层具有最高的沉积速率;当加入量为5mg·L-1时,镀层具有最好的耐蚀性能;Ce(... 详细信息

采用电化学方法研究了Ce(SO4)2对化学镀镍液及镀层性能的影响。结果表明:Ce(SO4)2的添加总体上提高了化学镀镍层的耐腐蚀性能和沉积速率,当加入量为2mg·L-1时,镀层具有最高的沉积速率;当加入量为5mg·L-1时,镀层具有最好的耐蚀性能;Ce(SO4)2能够在电极表面吸附,对次亚磷酸根氧化的促进作用表现在提高了其氧化电流密度,并通过影响化学镀镍的阳极反应来影响化学镀镍层的沉积速率;Ce(SO)42的加入增大了化学镀镍反应的活化能,提高镀液的稳定性。

关键词：化学镀镍 Ce(SO4)2 沉积速率耐蚀性能