Bibliografías temáticas / Thiourea. Thallium. Benzoic acid

Índice

Artículos de revistas
Tesis

Literatura académica sobre el tema "Thiourea. Thallium. Benzoic acid"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 13 de febrero de 2022

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Thiourea. Thallium. Benzoic acid".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Artículos de revistas sobre el tema "Thiourea. Thallium. Benzoic acid"

VARALE, YASHODHARA y AMIT VARALE. "Oxidation of P-methoxy Benzoic Acid Hydrazide by Thallium (III) in Acidic Medium (A Kinetic and Mechanistic Study)". Oriental Journal Of Chemistry 29, n.º 2 (30 de junio de 2013): 519–24. http://dx.doi.org/10.13005/ojc/290218.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Hassanien, Mohamed M., Wael I. Mortada, Ibrahim M. Kenawy y Heba El-Daly. "Solid Phase Extraction and Preconcentration of Trace Gallium, Indium, and Thallium Using New Modified Amino Silica". Applied Spectroscopy 71, n.º 2 (20 de julio de 2016): 288–99. http://dx.doi.org/10.1177/0003702816654166.

Texto completo

Resumen

Amino silica gel functionalized with 2-hydroxy-5 -(2-hydroxybenzylideneamino)benzoic acid was synthesized, characterized and used as adsorbent for the removal of Ga3+, In3+ and Tl3+ from aqueous solution prior to their determination by flame atomic absorption spectrometry. Experimental parameters that affect the separation process were investigated in both batch and column modes. The maximum adsorption capacities of the sorbent are 61.7 mg g−1, 81.3 mg g−1 and 133.0 mg g−1 for Ga3+, In3+ and Tl3+, respectively. The preconcentration factor is 200 and the limits of detection of Ga3+, In3+ and Tl3+ are 4.10 μg L−1, 1.55 μg L−1 and 1.21 μg L−1, respectively. Interference by Al3+ can be masked by the addition of F−; and that of Fe3+ by its reduction to Fe2+ using 10% ascorbic acid. The method was successfully applied for the determination of these ions in water, sediments and liquid crystal display samples.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Vargas, Alessandra P., Diego Alves, Caroline Wagner, Thais Posser, Robson Luiz Puntel y João Batista T. Rocha. "Potential application of 2-(6-ethylamino-3-ethylimino-2,7-dimethyl-3H-xanthen-9-yl) benzoic acid phenyl thiourea for mercury determination". Chemistry and Ecology 28, n.º 4 (agosto de 2012): 355–64. http://dx.doi.org/10.1080/02757540.2012.656610.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Arshad, Tanzila, Hamdullah Khadim Sheikh, Mehdi Hassan Kazmi, Sadia Farheen, Tehmina Sohail y Mehreen Lateef. "New bioactive triaryl triglyceride esters: Synthesis, characterization and biological activities". Bangladesh Journal of Pharmacology 13, n.º 4 (14 de octubre de 2018): 302. http://dx.doi.org/10.3329/bjp.v13i4.37210.

Texto completo

Resumen

Four new bioactive aryl triester derivatives of glycerol and benzoic acids were synthesized. The synthetic compounds were studied for their antimicrobial and urease inhibition activities. Esterification was carried out by using carbonyldiimidazole to enhance the acyl elimination addition reaction with benzoic acid derivatives. The structure of triglycerides were studied by EI-MS, 1H, 13C-NMR, FT-IR and elemental analysis. All synthetic compounds showed urease inhibition activity with highest value of IC50 value 22.4 ± 0.45 μM which is nearest to standard thiourea IC50 value (21.6 ± 0.12 μM). Except compound (3d), all other compounds exhibited antimicrobial activity against Streptococcus pneumoniae, Staphylococcus epidermidis, Bacillus pumilus, Escherichia coli, Pseudomonas aeruginosa and Candida albican.Video Clip of Methodology:7 min 59 sec <a href="https://youtube.com/v/PvGTYUxO7-4">Full Screen</a> <a href="https://youtube.com/watch?v=PvGTYUxO7-4">Alternate</a>

Los estilos APA, Harvard, Vancouver, ISO, etc.

Mortada, W. I., I. M. M. Kenawy, M. H. Abdel-Rhman, G. G. El-Gamal y S. M. N. Moalla. "A new thiourea derivative [2-(3-ethylthioureido)benzoic acid] for cloud point extraction of some trace metals in water, biological and food samples". Journal of Trace Elements in Medicine and Biology 44 (diciembre de 2017): 266–73. http://dx.doi.org/10.1016/j.jtemb.2017.09.003.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Wang, Yong Qiang, Fang Liu y Chao Cheng Zhao. "Preparation of Visible-Light Responsive Photocatalyst S_xTi_1-XO₂". Materials Science Forum 694 (julio de 2011): 602–7. http://dx.doi.org/10.4028/www.scientific.net/msf.694.602.

Texto completo

Resumen

Sulfur-doped titanium dioxide powders (SxTi1-xO2) was prepared by calcinations, that is, the hydrolysis of acidic tetra-butyl tianate using thiourea in ethanol, followed by calcinations at temperatures about 500°C. Based on the characterizations of XRD, BET, surface photovoltage spectroscopy (SPS), electric-field-induced surface photovoltage spectroscopy (EFISPS) and XPS, it was found that the sulfur could restrain the crystallization transformation of TiO2 from anatase to rutile, although the calcinations temperature has attained 500°C, the crystallization still were anatase entirely. The catalysts exhibited photocatalytic activity in the visible light region owing to S-doping. The light absorption onset of SxTi1-xO2 was shifted to the visible region at 550nm compared to 329nm of pure TiO2. In the crystal, the S atoms occupied some of the lattice titanium atoms for form S-O bonds. Photocatalytic decomposition of benzoic acid solutions was carried out under simulated sun light, and the SxTi1-xO2 catalyst showed higher activity than pure TiO2.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Xu, Youze, Yuehui Chen, Yuanyuan Zhao, Shuang Zhou, Guangyi Fu y Yu Zhong. "Synthesis and characterization of thiol-polystyrene microsphere and its adsorption properties of thallium". E3S Web of Conferences 237 (2021): 01001. http://dx.doi.org/10.1051/e3sconf/202123701001.

Texto completo

Resumen

Thallium (Tl) is highly toxic in the environment. In order to solve the harm of Tl pollution to the environment, thiol-polystyrene microsphere (TPM) with good adsorption properties for Tl were prepared in this paper. The GAUSSIAN software was used to calculate the adsorption performance of the TPM on Tl+, and the adsorption mechanism was discussed. The thermogravimetric analysis show that the TPM prepared with chloromethyl polystyrene microspheres (CPM) and thiourea as the main raw materials has good chemical thermal stability. In the Tl+ solution of 1mg/L, the adsorption and removal rate of the TPMs in was 99%, with a significant adsorption of Tl+ properties. When the dosage of TPM is 0.4L/g, pH is 6-10, temperature is 5-20 °C, and adsorption time reaches 640min, thallium-containing water with Tl+ concentration of 5mg/L can be treated to within the national discharge standard (5μg/L). The analytical effect of 0.5mol/L dilute sulfuric acid on TPM can reach 99.96%, and the adsorption capacity of TPM on Tl+ is reduced by only 0.1% after repeated use 4 times, which has good regeneration performance. The modified polystyrene microspheres were characterized by EDS, FT-IR, Raman spectra and XPS, and it was proved that the TPM were ligated with Tl+ through the grafted mercapto group, so as to adsorb and remove Tl+ from the solution. According to the isotherm and kinetic model of TPM adsorption Tl+, the maximum saturated adsorption amount of TPM to Tl+ can reach 3.47mg/g, mainly chemical adsorption, and the membrane diffusion stage is the main control step of TPM adsorption Tl+. The results showed that the TPM could be a promising adsorbent with good adsorption capacity and reusability for Tl+ removal from wastewater

Los estilos APA, Harvard, Vancouver, ISO, etc.

Schumann, Herbert, Homa Kucht y Andreas Kucht. "1-[4-{1,1′,1″,1‴,1′′′′-(1,3-Cyclopentadien-1,2,3,4,5-pentayl)pentakis}]-(4,1-phenylen)-alkanone und -benzoesäure pentaalkylester und deren Natrium- und Thallium(I)-Komplexe / 1-[4-{1,1′,1″,1‴,1′′′′-( 1,3-Cyclopentadiene-1,2,3,4,5-pentayl)pentakis}]-(4,1-phenylene)-alkanones and -benzoic Acid Pentaalkyl Esters and their Sodium- and Thallium(I) Complexes". Zeitschrift für Naturforschung B 47, n.º 9 (1 de septiembre de 1992): 1281–89. http://dx.doi.org/10.1515/znb-1992-0912.

Texto completo

Resumen

Pentaphenylcyclopentadiene (1) reacts with acyl chlorides RC(O)Cl (R = CH3, C3H7, C5H11, C7H15) with formation of the corresponding [(cyclopentadiene pentayl)pentakis] (1,4-phenylene) alkanones C5H(C6H4C(O)R-4)5 (2a, 2c, 2d and 2e). 2 a reacts with KOCl in water/dioxane to yield C5Cl(C6H4C(O)OH-4)5 (3), which after reaction with C2H5OH and C5H11OH gives the pentaesters C5Cl(C6H4C(O)OR-4)5 (4b and 4d), and after reaction with (CH3)3SnH the corresponding [(cyclopentadiene pentayl)pentakis] benzoic acid pentaalkyl esters C5H(C6H4C(O)OR-4)5 (5b and 5d). Reaction of 2a, 2c, 2d, 2e and 5b with NaNH2 results in the formation of the sodium salts Na[C5(C6H4C(O)R-4)5] (6a, 6c, 6d and 6e) and Na[C5(C6H4C(O)OC2H5-4)5] (7). 2a, 2c, 2d, 2e, 5b and 5d react with TlOC2H5 to give the thallium(I) derivatives Tl[C5(C6H4C(O)R-4)5] (8a, 8c, 8d, 8e) and Tl[C5(C6H4C(O)OR-4)5] (9b and 9d). The 1H and 13C NMR spectra of the new compounds are reported and discussed.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ali, Esraa M., Ahmed W. Naser y Muthanna S. Farhan. "SYNTHESIS OF SOME NEW HETEROCYCLIC COMPOUNDS DERIVED FROM N-(Ñ-PHENYL GLYCYL) SACCHARIN AND STUDY THEIR BIOLOGICAL ACTIVITY". Asian Journal of Pharmaceutical and Clinical Research 11, n.º 10 (7 de octubre de 2018): 555. http://dx.doi.org/10.22159/ajpcr.2018.v11i10.29048.

Texto completo

Resumen

Objective: In the present work, a variety of new heterocyclic compounds namely aza-β- lactam, cyclicimides, 1,3-thiazole, and 1,2,4-triazole.Methods: Procedure includes the synthesis of aza-β- lactam, cyclic imides, 1,3-thiazole, and 1,2,4-triazole. The synthesis was carried out in eleven steps using N-(Ñ-substituted phenylglycyl) saccharin derivatives (1a,b) as a starting material and converted to benzoic acid derivatives (2a,b) and then to ester derivatives (3a,b), which finally convers to benzohydrazide derivatives (4a,b). The cyclization of (4a,b) with carbon disulfide and hydrazine hydrate (80%) in the presence of potassium hydroxide gives 1,2,4-triazole compounds (5a,b), and subsequently (5a,b) derivatives reacted with different aromatic aldehydes in the presence of few drops of glacial acetic acid to give Schiff bases (6a-f). Compounds (7a-b) was prepared by the reaction of compounds (4a,b) with chloroacetyl chloride. 1,3-thiazole derivatives (8a,b) were synthesized through the cyclization of compounds (7a,b) with thiourea. Schiff bases (9a-f) were obtained by condensation of (4a,b) with different aromatic aldehydes in the presence of few drops of glacial acetic acid. Aza-β-lactam compounds (10a-f) were prepared by the cycloaddition of Schiff-bases (9a-f) with phenyl isocyanate through [2+2] cycloaddition reaction. Reaction (4a,b) with various acid anhydrides in presence of acetic acid gave the corresponding cyclic imide (11a-f). The newly prepared.Results: The results showed that compounds (5a) and (10e) have a good activity against Gram-positive bacterium and no activity against Gram-negative bacterium, compared to standard drugs (ciprofloxacin and amoxicillin), while compounds (8a) and (6b) have a high activity against fungi, compared to standard drugs (metronidazole benzoate), and the other tested compounds have low-to-moderate activity.Conclusion: 1,2,4-triazole is a most potent assemblage of Gram-positive bacterium retardants and cyclic imides are a most potent assemblage of fungi retardants.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Abouziena, Hussein, A. A. Amin, A. A. Abd El-Kader, M. El-Awadi y Fatma A. E. Gharib. "Effects of Benzoic acid and Thiourea on Growth and Productivity of Wheat (Triticum aestivum L.) Plants". PONTE International Scientific Researchs Journal 72, n.º 4 (2016). http://dx.doi.org/10.21506/j.ponte.2016.4.26.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Tesis sobre el tema "Thiourea. Thallium. Benzoic acid"

Brennan, Nicholas Frederick. "Structural studies of thallium(l)-thiourea complexes". Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-02202007-173756.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!