We describe a method for preparation of crystalline silver telluride films by cathodic deposition from dimethyl sulfoxide (DMSO) solutions containing 0.1 M NaNO3, 5.0 mM AgNO3 and 3.5–7.0 mM TeCl4. X-ray diffraction data indicated that the deposited silver telluride films could be adjusted from...

An investigation into the factors inhibiting the leaching of precious metal tellurides in cyanide solutions and initial testing of possible methods to improve leach performance were conducted. Petzite (Ag3AuTe2) was the principle mineral examined, along with calaverite (AuTe2) and hessite (Ag2Te...

Silver sintering technology was investigated as a method for interconnect formation of thermoelectric generators (TEGs). Using silver sintering we were able to assemble commercial bismuth telluride pellets and copper legs to fabricate TEGs, which are designed to work at elevated temperatures. Ni...

The electrical resistance of vacuum deposited silver telluride thin films was measured in the temperature range from 300 to 430 K at different heating rates. It is found that silver telluride films undergo a structural phase transition, with a hysteresis. The phase transition occurs over a wide ...

Ag2Te nanosheets are synthesized by a simple one-pot route using trioctylphosphine (TOP) as both solvent and stabilizer. Various controlling parameters were examined, such as molar ratios of AgNO3 to tellurium powder, reaction temperature and time, and precursor concentration. The morphology and...

The recovery of precious metals from gold and silver tellurides is a significant challenge because of the refractory behavior of these species during standard cyanide leaching. Some alternatives have been proposed to treat these ores, among others the use of non-cyanide leaching agents, oxidativ...

The Ag-Tl-Te system was studied using the EMF method with a solid Ag+ conducting electrolyte Ag4RbI5 in the temperature range 295–450 K. Previously constructed solid phase diagram of this system was confirmed. The partial molar functions (ΔG¯,ΔH¯,ΔS¯) of silver in alloys, as well as the s...

Silver telluride thin films of thickness 50 nm have been deposited at different deposition rates on glass substrates at room temperature and at a pressure of 2×10−5 mbar. The electrical resistivity was measured in the temperature range 300–430 K. The temperature dependence of the electrical re...

Although electrochemical characterization has been used to elucidate the species formed during hydrometallurgical processes, it has not been commonly applied to the cyanidation of precious metal tellurides. In this study, voltammetric characterization of the silver telluride (Ag2Te) reaction sys...

In recent years, Ag-Te systems have attracted much attention because of their unique properties of relatively large magnetoresistance and high electrical conductivity. In this article, we consider stoichiometric and silver-excess phases of silver telluride and report the structural, elastic, ele...

To elucidate the effect of structure and property of biochar on the structure-activity relationship among the composites of biochar supported Pd/Fe and 1,2,4-trichlorobenzene (1,2,4-TCB) and its dechlorination products, biochar supported Pd/Fe nanoparticles with different mass ratios were invest...

The chemical stability and hydrophobic nature of chloroarenes make them a persistent environmental hazard. Modeling of 1,2,4-trichlorobenzene (1,2,4-TCB) degradation in alcohol-water solution under UV irradiation was carried out with the aim of probing how the 1,2,4-TCB might behave in the envir...

In this paper, utilizing the bending Beam rheometer (BBR) test, low temperature rheological properties of asphalt binders which are modified by crumb rubber and gilsonite are investigated. For this purpose, the BBR test was performed on asphalt binder samples containing different extent of modif...

Seacoal and gilsonite are used by the foundry industry as carbonaceous additives in green molding sands. In this study, pyrolysis was used to simulate the heating conditions that the carbonaceous additives would experience during metal casting. Gas chromatography–mass spectrometry was used to t...

In this research study, relative performance of a series of ethylene vinyl acetate (EVA) and gilsonite modified bitumens were evaluated in terms of three main distress modes of flexible pavement namely rutting, fatigue damage and low temperature cracking. Seven modified and unmodified bitumens w...

Gilsonite is a natural fossil resource, similar to a petroleum asphalt high in asphaltenes. Asphaltenes are a class of organic compounds operationally defined based on their solubility in organic solvents, and as a result there is wide range of potential compositions and structures that can fit ...

SBS is a widely used polymer modifier for asphalt binders to improve the performance properties of hot mix asphalt. SBS is nearly indispensable when the binder properties do not satisfy the specification requirements under hot service temperatures. One of the concerns in using such additives, ho...

In this research, effects of the Iranian natural bitumen (gilsonite) on two types of asphalt binders produced in the country with the performance grades of PG58-22 and PG64-22 were studied according to superpave performance grading (PG) system. Results of conducted tests on the modified asphalt ...

The effect of adding gilsonite micrometric particles on the properties of N330 carbon black (CB) reinforced natural rubber (NR) compounds was investigated. Formulations with 30/0, 22.5/7.5, 15/15, 7.5/22.5 and 0/30 parts per hundred of rubber (phr) of CB/gilsonite were used, comparing the effect...

Iran-produced bitumen under the circumstances of severe temperature fluctuation, heavy traffic load and raining/freezing conditions show low efficiency; therefore, it is necessary to improve its properties accordingly. Existence of weakness in produced bitumen result in failure occurrence in asp...