Research on Chemical Intermediates

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‘In water’ exploration of Alpinia zerumbet-fabricated CuO NPs in the presence of NaPTS at room temperature: green synthesis of 1,8-dioxooctahydroxanthene derivatives
Research on Chemical Intermediates - - 2021
Bipin Shinde, Santosh Kamble, Harsharaj Jadhav, Prasad Mane, Kalpesh Khude, Hern Kim, Bhausaheb Karale, Arvind Burungale
The biogenic synthesis of copper oxide nanoparticles (CuO NPs) from the leaf extract of Alpinia zerumbet was investigated in this protocol. The basic nature of A. zerumbet leaf extract helps in CuO NPs synthesis. The catalytic activity of A. zerumbet-fabricated CuO NPs is explored in water at room temperature only in the presence of NaPTS hydrotrope. The green catalytic protocol is investigated vi...... hiện toàn bộ
Synthesis of Sm-doped TiO2 nanotubes and analysis of their methylene blue-removal properties under dark and UV-irradiated conditions
Research on Chemical Intermediates - Tập 39 - Trang 1581-1591 - 2012
Dong Jin Park, Tohru Sekino, Satoshi Tsukuda, Shun-Ichiro Tanaka
TiO2 nanotubes (TNTs) have received much attention over the past decade because of their unique nanostructure and physicochemical properties; in particular, TNTs can be applied in photocatalysis. In this study, degradation of methylene blue (MB) by samarium (Sm)-doped TNTs synthesized by a soft chemical process was investigated. Transmission electron microscopy revealed TNTs had diameters of appro...... hiện toàn bộ
Molecular orbital and DFT studies of the alimemazine radical cation
Research on Chemical Intermediates - Tập 26 - Trang 739-745 - 2000
Ke-Sheng Song, Lei Liu, Chen -Rui Hou, Xiao -Song Li, Qing -Xiang Guo
Semiempirical molecular orbital methods including CNDO, MNDO, AM1 and PM3, and density function theory method B3LYP/3-21G(d) were employed in the study of the alimemazine radical cation. It was found that PM3 was much better than CNDO, MNDO and AM1 in the structural optimization. The bond lengths and bond angles by PM3 were close to the experimental data, and comparable with the results by the den...... hiện toàn bộ
Time-resolved Esr spectroscopy (Cidep) of ketones
Research on Chemical Intermediates - Tập 18 - Trang 227-292 - 1993
J. K. S. Wan, M. C. Depew
An efficient method for synthesis of 3-arylbenzo[f]quinoline-1,2-dicarboxylates catalyzed by SnCl2
Research on Chemical Intermediates - Tập 41 - Trang 6967-6974 - 2014
Qing Yan, Hongjun Zang, Jiaxuan Feng, Mingguang Li, Danni Yang, Hai Lu, Bowen Cheng
A wide variety of 3-arylbenzo[f]quinoline-1,2-dicarboxylates and their dehydro derivatives have been synthesized by one-pot, three-component reaction of an aromatic aldehyde, naphthalene-2-amine, and dimethyl but-2-ynedioate in the presence of SnCl2 under reflux in acetonitrile. This procedure has several advantages, for example high yield, short reaction time, easy work-up, little pollution, and ...... hiện toàn bộ
Enhanced catalytic performance of F-doped CeO2–TiO2 catalysts in selective catalytic reduction of NO with NH3 at low temperatures
Research on Chemical Intermediates - Tập 41 - Trang 3479-3490 - 2013
Rui Zhang, Qin Zhong, Wei Zhao
The objective of this study was to investigate the promoting effect of F-doping of CeO2–TiO2 catalysts on low-temperature selective catalytic reduction (SCR) of NO X with NH3. A series of F-doped Ce–Ti mixed-oxide catalysts were prepared by the co-precipitation method. The experimental results showed that the best F-doped Ce–Ti mixed-oxide catalyst, with an F loa...... hiện toàn bộ
Efficient synthesis of chromenopyridines containing intramolecular hydrogen bonds through a sequential three-component reaction
Research on Chemical Intermediates - Tập 42 - Trang 5927-5936 - 2016
Abdolali Alizadeh, Fahimeh Bayat, Zhe Zhu
A one-pot sequential reaction of 1,1-bis(methylsulfanyl)-2-nitroethene, diamines, and 3‐formylchromones in EtOH has been developed to afford chromenopyridines. The method is operationally simple and the products are obtained in good yields.
Regio-selective synthesis of 5-substituted 1H-tetrazoles using ionic liquid [BMIM]N3 in solvent-free conditions: a click reaction
Research on Chemical Intermediates - Tập 42 Số 3 - Trang 1593-1610 - 2016
Soheila Khaghaninejad, Majid Μ. Heravi, Tayebeh Hosseinnejad, Hossein A. Oskooie, Mehdi Bakavoli
Microwve induced catalytic reactions of carbon dioxide and water: mimicry of photosynthesis
Research on Chemical Intermediates - - 1991
J. K. S. Wan, G. Bamwenda, M. C. Depew
In an attempt to emulate the highly successful photosynthetic recycling of CO2 to form energetically useful fuels in nature this study investigates the microwave induced reaction of carbon dioxide and water in a continuous flow system using a supported nickel catalyst and 2.45 GHz microwave radiation with an average incident power of 2.2 kW. The major reaction products were methane, ethane, methan...... hiện toàn bộ
Oxidation-induced catalytic performance of heterostructured Ni-TiO2 nanoparticles and formation of Leuco-Methylene blue
Research on Chemical Intermediates - Tập 48 - Trang 4475-4501 - 2022
Kazi Hasibur Rahman, Asit Kumar Kar, Kuan-Chung Chen
Ni-TiO2 catalysts have been successfully developed by simple sol–gel techniques with variations in Ni2+ concentration. The reduced bandgap suggests the appearance of the intragap various localized defect states and oxygen vacancies. The formation of oxygen vacancies and its effect on photocatalysis with the presence of the colour centres (F, F+, F++) in the photocatalytic mechanism by replacement ...... hiện toàn bộ
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