22.05.2013 | Xu-Jia Hong; Ming-Fang Wang; Hong-Guang Jin; Qingguang Zhan; Yi-Ting Liu; Hong-Yang Jia; Xiang Liu; Prof. Yue-Peng Cai, CrystEngComm, 2013

The temperature-driven single-crystal to single-crystal transformation of a new erbium(III) coordination polymer with ligand benzimidazole-5,6-dicarboxylic acid (H2bidc), {[Er(bidc)(ClO4)((H2O)3]·3H2O}n (1) to [Er(bidc)(ClO4)]n (2), has been reported and structures of 1 and 2 were determined ...

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17.05.2013 | Frédéric Dumur, Cédric R. Mayer, Helvetica Chimica Acta, 2013

Abstract A series of aryl‐substituted 1,3‐dithiol‐2‐ones was prepared by the BhattacharyaHortmann cyclization method. Unexpectedly, a Ritter reaction occurred during the acid‐catalyzed cyclization at the cyano group of the aryl substituents and 1,3‐dithiol‐2‐ones bearing a carboxy or a ...

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17.05.2013 | M. Kyle Brennaman; Cavan N. Fleming; Cheryl A. Slate; Scafford A. Serron; Stephanie E. Bettis; Bruce W. Erickson; Jo ..., Journal of Physical Chemistry B, 2013

Energy transfer between the metal-to-ligand charge transfer (MLCT) excited states of [Pra [MII(bpy)2(4-Me-4′(-N(H)CO)bpy)](PF6)2 units ([Pra(MIIbpy2(mbpy)]2+: MII = RuII or OsII, bpy = 2,2′-bipyridine, mbpy = 4′-methyl-2,2′-bipyridine-4-carboxamido, Pra = 4-MII-l-proline) linked covalently to ...

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17.05.2013 | Yujing You; Ting Gao; Fangli Qiu; Yong Wang; Xiaoying Chen; Wenping Jia; Rongrong Li, Journal of Chemical & Engineering Data, 2013

Solubilities of 2-benzoyl-3-chlorobenzoic acid and 1-chloroanthraquinone in organic solvents of ethyl acetate, acetone, 1,4-dioxane, and toluene were determined experimentally in the temperature range from (273.15 to 323.15) K by gravimetric method. The experimental results indicate that the ...

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16.05.2013 | Yamina A. Dávila; Matias I. Sancho; María C. Almandoz; Sonia E. Blanco, Journal of Chemical & Engineering Data, 2013

The acid dissociation constants (pKa) of 7-hydroxyflavone, 3-hydroxyflavone and 5-hydroxyflavone, which are practically insoluble compounds in water but of great biological and physicochemical interest, were determined by UV–visible spectroscopy in ethanol–water and acetonitrile–water ...

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16.05.2013 | Amir H. Navarchian, Zahra Hasanzadeh, Mehrnaz Joulazadeh, Advances in Polymer Technology, 2013

ABSTRACT This paper addresses the preparation of polyaniline (PANI) via a rapid mixing method in which a nanosheet (nanoflake) structure was observed by scanning electron microscopy. The microstructures of acid‐ and ammonia‐dedoped PANI samples were studied by Fourier transform infrared ...

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15.05.2013 | Laura Chronopoulou, Angelo C. Agatone, Cleofe Palocci, International Journal of Food Science & Technology, 2013

Summary In this work, we investigated the possibility to extract oleanolic acid through supercritical fluid extraction from waste materials such as grape pomace, which can represent a yet unexploited source of highly added‐value products. Preliminary supercritical fluid extractions were ...

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15.05.2013 | Woranart Jonglertjunya, Santita Rattanaphan, Pitchayawadee Tipsak, Asia-Pacific Journal of Chemical Engineering, 2013

ABSTRACT In this study, the effects of particle size, type and concentration of acid solution on dissolution kinetics of ilmenite are investigated. The results showed that both oxalic and sulfuric acid and their concentrations had relatively high effects on the dissolution rate of ...

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15.05.2013 | Xingtang Rao; Jianfeng Cai; Jiancan Yu; Yabing He; Chuande Wu; Wei Zhou; Taner Yildirim; Banglin Chen; Guodong Qian, Chemical Communication, 2013

A new microporous metal–organic framework, Cu2(PDDI) (ZJU-5; H4PDDI = 5,5′-(pyridine-2,5-diyl)diisophthalic acid), was solvothermally synthesized and structurally characterized. With open metal sites, Lewis basic pyridyl sites and suitable pore space, the acetylene uptake in ZJU-5a reaches ...

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14.05.2013 | A. H. M. Shahadat Hussain; Hongyun Yang; Bruce J. Tatarchuk, Energy & Fuels, 2013

The adsorption mechanisms for aliphatic and aromatic sulfur compounds onto Ag/TiOx–Al2O3 (10 wt % Ag; Ti/Al = 1:4.4 by weight) adsorbent were investigated in this paper. The mesoporous mixed-oxide-supported silver adsorbent demonstrated promising sulfur adsorption capacities (∼10 mg of S/g of ...

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