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6.248 Aktuelle Fachpublikationen zum Thema temperature

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V2O5/SBA-15 nanocatalysts for the selective synthesis of 2,3,5-trimethyl-1,4-benzoquinone at room temperature

25.11.2015 | David Raju Burri; C. K. Prasad Neeli; Venkata Siva Prasad Ganjala; Venkateswarlu Vakati; Rama Rao Seetha Kamaraju, New Journal of Chemistry, 2015

A series of four V2O5/SBA-15 catalysts with the loadings of 5, 7.5, 10 and 12.5% (by weight) V2O5 have been prepared by molecular designed dispersion (MDD) method and are characterized by N2-physisorption, low-angle and wide-angle XRD, transmission electron microscope (TEM), Fourier ...


One pot synthesis of environmentally friendly lignin nanoparticles with compressed liquid carbon dioxide as an antisolvent

25.11.2015 | Aye Aye Myint; Hun Wook Lee; Bumjoon Seo; Won-Su Son; Junho Yoon; Tae Jun Yoon; Hee Jeong Park; Jihyun Yu; Jeyong Yo ..., Green Chemistry, 2015

Nanoparticles from the commercial kraft lignin were developed using a facile, one pot green technology of compressed CO2 antisolvent. N,N,-dimethylformamide (DMF) was employed as an organic solvent to prepare the lignin solution. The effects of various process parameters: temperature, pressure, ...


Mesoporous In2O3 nanocrystals: synthesis, characterization and NOx gas sensor at room temperature

25.11.2015 | Jun Gao; Hongyuan Wu; Jiao Zhou; Liyuan Yao; Guo Zhang; Shuang Xu; Yu Xie; Li Li; Keying Shi, New Journal of Chemistry, 2015

Mesoporous In2O3 nanocrystals (INS) were successfully prepared using SBA-16 as the template. The INS-3 synthesized by the 0.3 M In(NO3)3 solution had 7.27 nm mean pore size and 82.32 m2•g-1 specific surface area, the mesoporous In2O3 nanocrystals were interconnected In2O3 small-grain (~ 5 nm) ...


Flexible MOFs under stress: pressure and temperature

25.11.2015 | Abraham Clearfield, Dalton Transactions, 2015

In the recent past an enormous number of Metal–Organic Framework type compounds (MOFs) have been synthesized. The novelty resides in their extremely high surface area and the ability to include additional features to their structure either during synthesis or as additives to the MOF. This ...


Solvent specific synthesis of nano corpse flowery lithiated iron oxide as an energy storage and gas sensing material

24.11.2015 | Rasmita Barik; K. T. Leung; Mamata Mohapatra, New Journal of Chemistry, 2015

Iron oxide based materials are one of the most appealing matrices and promising futuristic materials for energy conversion/storage devices. The solvent dependent synthesis and growth of lithiated iron oxide/LiFeO2 nano flowers was established using a simple sol–gel method at low temperature. ...


Synthesis and Applications of Fluorescent Polymers as Fluorescent Probes

24.11.2015 | Ye, Qianghua; Yan, Fanyong; Kong, Depeng; Wang, Jing; Zhou, Xuguang; Chen, Li, Organic Chemistry, 2015

Abstract: Fluorescent probes possess low limit, high sensitivity, and wide response range, etc. but they have some disadvantages including contamination to the detection system, limitation of repeated use. Polymers combined with fluorescent probes could overcome these drawbacks and they ...


Acylation of indoles via photoredox catalysis: a route to 3-acylindoles

24.11.2015 | Lijun Gu; Cheng Jin; Jiyan Liu; Hongtao Zhang; Minglong Yuan; Ganpeng Li, Green Chemistry, 2015

A visible-light-induced synthesis of 3-acylindoles from simple indoles and α-oxo acids at room temperature has been discovered. The reaction tolerates a wide range of functional groups and gives a variety of valuable 3-acylindoles in moderate to high yields under mild conditions.


Synthesis of Nano Calcium Hydroxide in Aqueous Medium

21.11.2015 | Aniruddha Samanta, Dipak K. Chanda, Pradip Sekhar Das, Jiten Ghosh, Anoop Kumar Mukhopadhyay, Arjun Dey, Journal of the American Ceramic Society, 2015

The present work reports a simple, inexpensive method for synthesis of calcium hydroxide [Ca(OH)2] nanoparticles (CHNPs). The method involves chemical precipitation (CP) in aqueous medium at room temperature. Calcium nitrate dihydrate [Ca(NO3)2.2H2O] and sodium hydroxide were used as precursors. ...


Substrate Controlled Synthesis of Benzisoxazole and Benzisothiazole Derivatives via PhI(OAc)2-Mediated Oxidation Followed by Intramolecular Oxidative O–N/S–N Bond Formation

20.11.2015 | Devireddy Anand; Om P. S. Patel; Rahul K. Maurya; Ruchir Kant; Prem P. Yadav, The Journal of Organic Chemistry, 2015

A phenyliodine(III) diacetate (PIDA)-mediated, highly efficient and tandem approach for the synthesis of aryldiazenylisoxazolo(isothiazolo)arenes from simple 2-amino-N′-arylbenzohydrazides has been developed. The reaction proceeds via formation of (E)-(2-aminoaryl)(aryldiazenyl)methanone as the ...


Silver-Mediated 18F-Labeling of Aryl-CF3 and Aryl-CHF2 with 18F-Fluoride

20.11.2015 | Stefan Verhoog; Lukas Pfeifer; Tanatorn Khotavivattana; Samuel Calderwood; Thomas Lee Collier; Katherine Wheelhouse; ..., Synlett, 2015

SynlettDOI: 10.1055/s-0035-1560592 We report the synthesis of [18F]arylCF3 and [18F]arylCHF2 derivatives from arylCF2Br and arylCHFCl precursors applying a silver-mediated halogen exchange with [18F]fluoride. In the absence of Ag(I)OTf, no reaction takes place at room temperature for both ...


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