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作者:... Ananthakumar Solaiappan , Yonas Chebude , Esayas Alemayehu
来源:[J].Applied Surface Science(IF 2.112), 2020, Vol.515
摘要:Abstract(#br)With special focus of the effect of dopant concentration on physicochemical properties, a series of visible light active nitrogen doped titania (N/TiO 2 ) nanomaterials were successfully synthesized via sol-gel method of titanium butoxide in the presence of beni...
作者:Yonas Chebude , Carlos Márquez-Álvarez
来源:[J].Catalysis Today(IF 2.98), 2019Elsevier
摘要:Abstract(#br)Vernonia galamensis is a native weed of Ethiopia containing high concentration of naturally epoxidized oil (glyceryl trivernolate) in its seeds, which could be used as a potential substitute for currently used epoxy oils. Apart from an epoxy group, vernolic acid...
作者:... Carlos Márquez-Álvarez , Yonas Chebude , Isabel Díaz
来源:[J].Microporous and Mesoporous Materials(IF 3.365), 2016, Vol.225, pp.88-97Elsevier
摘要:Abstract(#br)A series of selected TiO 2 -Zeolite hybrid photocatalytic materials have been systematically synthesized and analyzed. The synthesized samples were characterized by X-ray diffraction (XRD), elemental analysis (ICP-OES), N 2 adsorption–desorption isotherms, diffu...
作者:... Raquel García , Yonas Chebude , Isabel Díaz
来源:[J].Separation and Purification Technology(IF 2.894), 2013, Vol.120, pp.224-229Elsevier
摘要:Abstract(#br)Zeolites and fluoride-rich groundwaters are both usually associated to volcanic regions, and hence in this work we study natural zeolites as fluoride-adsorbents in order to develop a cheap and locally-available fluorosis mitigation technology. The defluoridation...
作者:... Taju Sani , Yonas Chebude , Isabel Díaz
来源:[J].Microporous and Mesoporous Materials(IF 3.365), 2014, Vol.193, pp.93-102Elsevier
摘要:Abstract(#br)A preliminary inspection of natural zeolites samples in the north east of Ethiopia showed a large deposit of highly pure stilbite (hereafter called |CaNa|-STI). Rietveld refinement of synchrotron powder diffraction data ( C 2/ m , a = 13.62(1) Å, b = 18.2563(1...
作者:... Shimelis Admassie , Ignacio J. Villar-Garcia , Yonas Chebude
来源:[J].Inorganic Chemistry Communications(IF 2.016), 2013, Vol.29, pp.210-212Elsevier
摘要:Abstract(#br)Newly synthesised 4,4-bipyridinium based ionic liquids exhibit good metal coordinating abilities and are able to dissolve metal salts at high concentrations. The ability to capture metal salts into the ionic liquid media facilitates the application of ionic liquids i...
作者:David J. Brauer , Yonas Chebude , Gottfried Pawelke
来源:[J].Journal of Fluorine Chemistry(IF 1.939), 2001, Vol.112 (2), pp.265-270Elsevier
摘要:Abstract(#br)(CF 3 ) 2 BNMe 2 reacts with CF 3 (CF 2 ) n I/tetrakisdimethylaminoethylene (TDAE) to form the dimethylamine boranes CF 3 (CF 2 ) n (CF 3 ) 2 B·NHMe 2 ( n =1 ( 2 ), 3 ( 3 )). Reacting C 2 F 5 I with Br 2 BNMe 2 and TDAE, (C 2 F 5 ) 3 B·NHMe 2 ( 4 ) was obtained ...
作者:Yonas Chebude , Haregewine Tadesse
来源:[J].Acta Crystallogr C Cryst Struct Commun(IF 0.492), 2012, Vol.68 (Pt 9), pp.o362-o364IUCr
摘要:In the title compound [systematic name: (1Z,3Z)-1,3-dihydrazinylidene-1H-inden-2(3H)-one], C 9 H 8 N 4 O, isolated molecules possess approximate noncrystallographic C 2v symmetry and their cis conformation and planarity are assisted by a pair of short intramolecular N—...
作者:Tegene Desalegn Zeleke , Teshome Abdo Segne , Yonas Chebude
来源:[J].American Journal of Applied Chemistry, 2016, Vol.4 (6)SciencePG
摘要:In this study the synthesis of epoxy fatty acid esters of starch (starch vernolates) by the reaction of cassava starch with vernonia oil methyl ester (epoxy ester) using basic catalyst K2CO3 and organic solvent, DMSO as a reaction medium is presented. U...

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