Results 41 to 50 of about 25,055 (235)

Preyssler Heteropolyacids in the Self-Etherification of 5-Hydroxymethylfurfural to 5,5′-[Oxybis(methylene)]bis-2-furfural Under Mild Reaction Conditions [PDF]

, 2017
The synthesis of 5,5′-[oxybis(methylene)]bis-2-furfural (OBMF) from 5-hydroxymethylfurfural (5-HMF) was studied using bulk and alumina-supported Preyssler heteropolyacids (HPAs). The formation of OBMF was related to the amount of Brønsted acid sites, and
Afonso, Carlos A. M., Martínez, José J., Portilla Zúñiga, Omar Miguel, Páez, Alexander, Rojas, Hugo A., Romanelli, Gustavo Pablo, Sathicq, Angel Gabriel   +6 more
core   +1 more source

Protic Ionic Liquids in Contrast to Aprotic Analogs: Transport Properties and Electrochemical Reactivity

The Chemical Record, EarlyView.
The transport properties and electrochemical reactivity of protic ionic liquids (ILs) are compared with those of aprotic analogs. Protic ILs are characterized by strong cation–anion hydrogen bonding and labile protons, enabling proton conduction and highlighting their potential as fuel cell electrolytes.
Masayoshi Watanabe, Seiji Tsuzuki
wiley   +1 more source

Application of Automatic Potentiometric Titrator in Continuous Titration of Six Indices in Groundwater

Yankuang ceshi, 2018
BACKGROUND The analysis of six indices (pH, total alkalinity, chloride ion, calcium ion, magnesium ion and sulfate radical) in underground water needed to be sampled separately for each index. The steps were tedious with low efficiency.
ZHAO Wen-jie, MA Ming, ZHANG Ke, LI Yan-xiang, HOU Ming-lan, ZHANG Yu-qiang   +5 more
doaj   +1 more source

Diagrams of the formation of In2S3 and In 2Se3 films on vitroceramic upon precipitation, according to potentiometric titration [PDF]

, 2013
Boundary conditions and ranges of the formation of indium(III) sulfide and selenide upon precipitation by thiocarbamide and selenocarbamide are determined.
Bakhteev, S. A., Markov, V. F., Maskaeva, L. N., Tulenin, S. S., Yusupov, R. A.   +4 more
core   +1 more source

Equations for potentiometric titration [PDF]

Journal of Chemical Education, 1968
Examines some difficulties arising with assumptions made in a previously published experiment.
Ann Lomax, Allen J. Bard
openaire   +1 more source

Cyanogenic Compounds, Physicochemical Parameters and Metals in Water From Cassava Processing Areas: A Study in the Brazilian Amazon, Using Multivariate Analysis

Environmental Toxicology, EarlyView.
ABSTRACT This study evaluated the water quality of artesian wells and effluents generated in cassava processing in a rural area of Bragança, Pará, with emphasis on physicochemical parameters, multielement composition, and cyanogenic compounds. The well water presented specific nonconformities, highlighting pH values below the recommended level and high
Alana Coêlho Maciel, Mariane Gama Nabiça, Luciana Pinheiro Santos, Thiago de Melo e Silva, Elivaldo Nunes Modesto Junior, Heronides Adonias Dantas Filho, Charles Miller de Souza Borges, Kelly das Graças Fernandes Dantas, Simone de Fátima Pinheiro Pereira, Ivan Carlos da Costa Barbosa, Beni Jequicene Mussengue Chaúque, Rosinelson da Silva Pena, Nayara Macêdo Peixoto Araújo, Alessandra Santos Lopes   +13 more
wiley   +1 more source

Application of Potentiometric and Electrophoretic Measurements to Evaluate the Reversibility of Adsorption of Divalent Ions from a Solution on Titanium Dioxide

Molecules
The adsorption of divalent ions on metal oxides is controlled by the pH of a solution. It is commonly assumed that this is a reversible process for pH changes. However, there are reports that the sorption of ions on oxides may not be reversible.
Wojciech Piasecki, Karolina Lament
doaj   +1 more source

Defining AV2‐1 as a novel pharmacological probe to target human and rodent TRPV2

British Journal of Pharmacology, EarlyView.
Abstract Background and Purpose Transient receptor potential vanilloid 2 (TRPV2) is a non‐selective cation channel implicated in immune cell functions. However, progress in understanding TRPV2 has been limited by a lack of potent and selective pharmacological tools, particularly those targeting the human variant. We aimed to identify and characterise a
Andrea Leipe, Julia A. Rocereta, Ruth A. Pumroy, Andreas Leffler, Michael Schaefer, Vera Moiseenkova‐Bell, Kerstin Hill   +6 more
wiley   +1 more source

Surface stoichiometry of zinc sulfide and its effect on the adsorption behaviors of xanthate

Chemistry Central Journal, 2011
In this paper, the surface stoichiometry, acid-base properties as well as the adsorption of xanthate at ZnS surfaces were studied by means of potentiometric titration, adsorption and solution speciation modeling.
Wang Meng, Zhang Qi, Hao Wei, Sun Zhong-Xi   +3 more
doaj   +1 more source

A computer‐controlled potentiometric/spectrophotometric titrator [PDF]

Journal of Analytical Methods in Chemistry, 1988
A laboratory computer controlled potentiometric titrator interfaced to a diode array spectrophotometer is described. The titrator consists of widely used, commercially available components; therefore, major attention is given to modes of interconnection and software implementation in data format and system control.
openaire   +2 more sources