Results 31 to 40 of about 31,421 (268)
Metals, 2017 The effect of pyrite and the role of ammonium alcohol polyvinyl phosphate (AAPP) during gold leaching in ammoniacal thiosulfate solutions were investigated using pure gold foils.
Xiaoliang Liu +7 more
doaj +1 more source
Highly efficient removal of Cr(VI) by hexapod-like pyrite nanosheet clusters
, 2021 Pyrite nanomaterials show an excellent performance in remediating Cr(VI) contaminated wastewater. However, the high surface reactivity makes them easy to agglomerate to reduce their removal efficiency for Cr(VI).
Nie, Xin +6 more
core +1 more source
Angewandte Chemie International Edition, EarlyView.Isolated Pd sites in a metallic Co matrix boost nitrate‐to‐ammonia conversion. Pd doping optimizes intermediate adsorption and reconstructs the interfacial microenvironment, promoting cation enrichment and a hydrogen‐down‐oriented water network. This dual modulation facilitates proton transfer and intermediate stabilization, enabling high ammonia ...
Qun He +6 more
wiley +1 more source
Study on Water Wettability Mechanism of Pyrite and Coal Surfaces Based on Density Functional Theory
Kuangchan zonghe liyong, 2022 Flotation is based on the difference of wettability of mineral surfaces. In order to study the water wettability mechanism of pyrite and coal surfaces, pyrite and perfect coal surface models were constructed. The adsorptions of water and oxygen molecules
Chengyong Wang +3 more
doaj +1 more source
Raman spectroscopy of pyrite in marble from Chillagoe, Queensland
, 2015 Samples of marble from Chillagoe, North Queensland have been analysed using scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS) and Raman spectroscopy.
Andrés López +3 more
core +1 more source
The Anatomical Record, EarlyView.Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano +3 more
wiley +1 more source
International Journal of Coal Science & TechnologyTextural analysis of pyrite has been carried out in the lignites of Kachchh Basin to decipher its micro-morphological character. The study entails the intermediate stage and authigenic sunflower structured pyrite.
Ashish Kumar Singh +3 more
doaj +1 more source
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 2023 Two examples of contact twins in pyrite from Peru are described. The first one, from Pasto Bueno ore deposit, shows the pyritohedron {120} as principal form, accompanied by the {111} octahedron and {100} cube as secondary forms, giving a lenticular aspect.
Yves Moëlo +2 more
openaire +3 more sources
Produção de sulfato ferroso a partir da pirita: desenvolvimento sustentável [PDF]
, 2008 Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.Esta tese de doutorado objetivou o estudo da pirita contida nos rejeitos piritosos da região sul catarinense, considerados os ...
Peterson, Michael
core
Deep Underground Science and Engineering, EarlyView.The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza +3 more
wiley +1 more source