Review
Engineering, Chemical
Junlian Wang, Wen Xu, Hui Liu, Fengshan Yu, Huajun Wang
Summary: This review categorized 183 compounds into seven major groups, and discussed their characteristics in Pd extraction mechanism, extractability, structure-activity relationships, extraction kinetics, acidity effect on Pd extraction efficiency, selectivity and stripping.
MINERALS ENGINEERING
(2021)
Article
Engineering, Chemical
Miguel A. P. Loreti, M. Tereza A. Reis, M. Rosinda C. Ismael, Katarzyna Staszak, Karolina Wieszczycka
Summary: This study investigates the performance of three new extracting agents in the solvent extraction of palladium, with D-3EI found to have the highest potential for extracting and stripping Pd(II) among the reagents tested.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Geochemistry & Geophysics
Xueni Zhang, Bryan J. Maciag, James M. Brenan, James E. Mungall
Summary: Past experiments mainly focused on the roles of olivine and chromite in controlling the behavior of the platinum-group elements (PGE) during melting and solidification, while other phases like pyroxene were less characterized. This study conducted experiments to measure the partitioning of Pd between orthopyroxene and silicate melt, revealing changes in Pd solubility with varying redox conditions and a higher compatibility of Ir compared to Pd.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Review
Chemistry, Physical
Ana Paula Paiva
Summary: The strategic importance of platinum and palladium, two platinum-group metals (PGMs), is supported by their technological applications, especially as catalysts. The increasing demand for these PGMs as catalysts justifies the need for sustainable recycling processes. This review focuses on recent research trends in developing sustainable methods, specifically solvent extraction (SX) steps, for recovering platinum and palladium from spent catalysts in the liquid phase.
Article
Chemistry, Physical
Elzbieta Radzyminska-Lenarcik, Ilona Pyszka, Artur Kosciuszko
Summary: This study demonstrates that a new amine derivative EDAB-acac can effectively separate a mixture containing Au(III), Pd(II), and Pt(IV) ions in an acidic medium (HCl) using solvent extraction. The impact of acid concentration and solvent type on separation efficiency was discussed, with high donor number solvents enhancing extraction. A 3-step stripping process for the recovery of Pd(II), Au(III), and Pt(IV) from the mixture was proposed, making it useful for e-waste recycling.
Article
Engineering, Chemical
Ana Paula Paiva, Francisco Vega Piedras, Pedro G. Rodrigues, Carlos A. Nogueira
Summary: To ensure the supply of raw materials for important products in strategic sectors, the recovery of critical metals from secondary sources becomes increasingly urgent. This article investigates the operations of leaching and solvent extraction in order to optimize conditions and propose new arrangements to improve them.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Mei Fan, Shunling Li, Hui Deng, Xiaoguo Zhang, Guoting Luo, Zhangjie Huang, Muhan Chen
Summary: In this study, a novel extraction-electrodeposition process was used to separate and recover iridium from a multi-metal mixed solution. The research found that the mixed ionic liquid was effective in separating platinum and iridium, and it also demonstrated low volatility and good stability. Experimental and computational methods were applied to investigate the optimal conditions for electrodeposition and the mechanism of platinum and iridium separation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Zuzanna Wiecka, Martyna Rzelewska-Piekut, Magdalena Regel-Rosocka
Summary: The paper presents studies on the application of hydrometallurgical recovery of platinum group metals (PGM) from spent automotive converters (SAC) through an integrated four-stage process, which includes leaching, extraction, and stripping. By using different acidic solutions and extractants, effective separation of different metals was achieved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Sayed-Ali Moussaoui, Anne Lelias, Bertrand Braibant, Daniel Meyer, Damien Bourgeois
Summary: A new reagent THMA was proposed for palladium extraction from waste, showing superior distribution ratios and selectivity compared to previous diamide reagents. The use of excess DHA during THMA preparation demonstrated improved kinetics performance. The best performing formulation of extraction solvent can be easily prepared from commercially available chemicals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Electrochemistry
Masahiko Matsumiya, Yusuke Tsuchida, Ryoma Kinoshita, Yuji Sasaki
Summary: The study focused on developing solvent extraction and electrodeposition processes for platinum group metals to reduce waste volume. The electrodeposition behavior of Pt(IV) complex in a phosphonium-based ionic liquid was investigated, revealing charge transfer reactions and confirming the metallic state of the electrodeposits. Consecutive solvent extraction and electrodeposition cycles in the Alamine336/IL system showed high extraction percentage and good current efficiency.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Review
Engineering, Biomedical
Shao-Bin He, Liu Yang, Meng-Ting Lin, Paramasivam Balasubramanian, Hua-Ping Peng, Ye Kuang, Hao-Hua Deng, Wei Chen
Summary: With the development of platinum group element-based nanozymes, the application of nanozymes in the field of biomedicine has been expanded, possessing high catalytic efficiency and stability, suitable for applications in bio-detection, biomedical imaging, and other fields. The focus of the research is to reveal their roles and overcome limitations in biomedical applications, and trends and prospects for the future are also provided.
BIOMEDICAL MATERIALS
(2021)
Article
Engineering, Chemical
Yuki Ueda, Shintaro Morisada, Hidetaka Kawakita, Marco Wenzel, Jan J. Weigand, Keisuke Ohto
Summary: A new extractant, 1-butyl-3-(2-ethylhexyl)urea (L), was studied for its efficient extraction of [PtCl6](2-) from HCl solutions, showing high selectivity and revealing the mechanism of extraction and changes in water content after extraction.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Viet Nhan Hoa Nguyen, Si Jeong Song, Man Seung Lee
Summary: A simple process of selective dissolution can be developed to recover Pd and Pt metals.
Review
Environmental Sciences
Lionel Savignan, Stephane Faucher, Philippe Chery, Gaetane Lespes
Summary: Platinum group elements (PGE) are rare metals with low abundance in the continental crust. Among them, the palladium subgroup of PGE (PPGE) has been increasingly exploited for its physicochemical properties, leading to emerging environmental contamination. This review summarizes data on soil contamination by PPGE and discusses their anthropogenic emission, fate, speciation, transformations, and toxicity in urban and non-urban areas, along with analytical determination process.
Article
Metallurgy & Metallurgical Engineering
P. Sahu, M. S. Jena, N. R. Mandre, R. Venugopal
Summary: Platinum group elements are essential to various modern industrial applications but are difficult to mine and extract due to their ultratrace concentration, small grain size, and multiple associations. This review critically discusses the classification and mineralogy of platinum group element ores, evaluates beneficiation practices, emphasizes on flotation and enhanced gravity separation techniques for recovery of platinum group elements.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2021)
Article
Engineering, Chemical
Manish K. Sinha, Sushanta K. Sahu, Pratima Meshram, L. B. Prasad, Banshi D. Pandey
Review
Green & Sustainable Science & Technology
Pratima Meshram, B. K. Purohit, M. K. Sinha, S. K. Sahu, B. D. Pandey
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2015)
Article
Metallurgy & Metallurgical Engineering
Manish Kumar Sinha, Sushanta Kumar Sahu, Swati Pramanik, Lal Bahadur Prasad, Banshi Dhar Pandey
Article
Metallurgy & Metallurgical Engineering
Aarti Kumari, Manish Kumar Sinha, Sushanta Kumar Sahu, Banshi Dhar Pandey
Article
Engineering, Chemical
Manish Kumar Sinha, Swati Pramanik, Sushanta Kumar Sahu, Lal Bahadur Prasad, Manis Kumar Jha, Banshi Dhar Pandey
SEPARATION AND PURIFICATION TECHNOLOGY
(2016)
Article
Chemistry, Multidisciplinary
Aarti Kumari, Manish Kumar Sinha, Sushanta Kumar Sahu, Banshi Dhar Pandey
SOLVENT EXTRACTION AND ION EXCHANGE
(2016)
Article
Engineering, Chemical
Manish Kumar Sinha, Swati Pramanik, Aarti Kumari, Sushanta Kumar Sahu, Lal Bahadur Prasad, Manis Kumar Jha, Kyoungkeun Yoo, Banshi Dhar Pandey
SEPARATION AND PURIFICATION TECHNOLOGY
(2017)
Article
Engineering, Environmental
Aarti Kumari, Manish Kumar Sinha, Swati Pramanik, Sushanta Kumar Sahu
Article
Metallurgy & Metallurgical Engineering
Manish Kumar Sinha, Walter Purcell
Article
Metallurgy & Metallurgical Engineering
Walter Purcell, Manish Kumar Sinha, Amanda Qinisile Vilakazi, Motlalepula Nete
Article
Materials Science, Multidisciplinary
Manuel Saldana, Edelmira Galvez, Ricardo Jeldres, Catalina Diaz, Pedro Robles, Manish Kumar Sinha, Norman Toro
Article
Engineering, Chemical
Manish Kumar Sinha, Walter Purcell, Willem A. Van der Westhuizen
MINERALS ENGINEERING
(2020)
Article
Green & Sustainable Science & Technology
Manish Kumar Sinha, Rian Jordaan, Walter Purcell
Summary: The leaching behavior of manganese from ferruginous manganese ore in sulphuric acid solution using sodium dithionite as a reducing agent was studied. The optimum leaching conditions were determined, and high purity α-Mn2O3 was successfully synthesized, suggesting that this method is an economical and efficient technology for reductive leaching of manganese oxide ores.
JOURNAL OF SUSTAINABLE METALLURGY
(2022)
Article
Materials Science, Multidisciplinary
Himanshu Tanvar, Manish Kumar Sinha, Jean Baptiste Habinshuti, Brajendra Mishra
Summary: This study presents a fluoride-free, rapid, and energy-efficient process for niobium and tantalum extraction from columbite using microwave-assisted alkali treatment and solvent extraction. The microwave treatment was optimized to achieve maximum dissolution. Water leaching of the microwave-treated sample resulted in high dissolution percentages of niobium, tantalum, tin, and iron. Solvent extraction and selective stripping were used to separate and obtain pure niobium oxide and Ta-rich mixed oxide.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2023)
Article
Chemistry, Physical
Xinlei Chen, Shiyi Chen, Xuele Lin, Jingxuan Zhou, Xingjun Gao, Yaoqi Zhen, Xiaodan Ma, Shouwen Jin, Linfang Shi, Hui Liu, Daqi Wang
Summary: Nine mixed-ligand Cd2+ complexes with different geometric structures were synthesized and characterized. The complexes exhibit various coordination modes and form both intra- and intermolecular hydrogen bonds.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Rupali Mahajan, Abhishek Sharma, Bhagyashree Patra, Lijo Mani, Parul Grover, Sandeep Kumar, Santosh Kumar Guru, Gananadhamu Samanthula, Amol G. Dikundwar, Amit Asthana
Summary: This research article provides a comprehensive characterization and toxicological assessment of a photoisomeric impurity of the antianemic drug Roxadustat. The impurity has a distinct structure compared to the drug and its formation due to light exposure is a concern. Through various experiments, including single crystal XRD, physicochemical characterization, and in vitro cytotoxicity assays, the researchers confirmed the structure of the impurity, evaluated its conversion with Roxadustat, and assessed its toxicological activity. These findings contribute to the understanding of drug stability, safety, and formulation development.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Laila S. Alqarni, Azzah M. Alghamdi, Nuha Y. Elamin, A. Rajeh
Summary: The solution casting method was used to produce a new type of nanocomposites made of chitosan, gelatin, and co-doped ZnO nanoparticles. The addition of 3.5% co-doped ZnO nanoparticles improved the physicochemical characteristics and antimicrobial effects of the nanocomposites, indicating their significant potential in food packaging and energy storage.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Ruchi Gaur
Summary: The structure and intermolecular interactions of a newly synthesized bis-chalcone THXA were studied using experimental and computational methods. The importance of non-covalent interactions such as pi center dot center dot center dot pi, C-H center dot center dot center dot S, and C-H center dot center dot center dot pi was revealed.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Andrii Bazylevich, Leonid Patsenker, Sarit Aviel-Ronen, Gary Gellerman
Summary: Drug combination therapy is commonly used for treating various skin disorders, but its effectiveness is often limited. In this study, researchers synthesized conjugates of anti-pigmenting drugs and hyaluronic acid (HA) to improve treatment efficacy. These HA-drug conjugates exhibited measurable drug release profiles and demonstrated superior depigmentation effects compared to control groups in a swine model.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Xiaodan Ma, Xinlei Chen, Yaoqi Zhen, Xunjie Zheng, Chengzhe Shi, Shouwen Jin, Bin Liu, Bin Chen, Daqi Wang
Summary: Cocrystallization experiments between minoxidil and aryl acids coformers resulted in the successful formation of multi-component samples. The nature of these samples was determined using various techniques and their structural and supramolecular aspects were investigated. The outcomes revealed the importance of nonbonding contacts and different types of interactions in stabilizing and expanding the crystal structures.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Najla A. Alshaye, Magdy A. Ibrahim, Al-Shimaa Badran
Summary: The chemical behavior of 3-substituted-6,8-dimethylchromones towards phenylhydrazine was examined. Different reaction conditions produced various products, and the molecular geometries and reactivity descriptors of the compounds were also investigated. The results suggest that these compounds are suitable for nonlinear optical applications.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Hayette Alliouche, Houria Bouria, Rafik Bensegueni, Mounia Guergouri, Abdelmalek Bouraiou, Ali Belfaitah
Summary: In this paper, a combined experimental and theoretical study was conducted to synthesize and characterize new 2-quinolone-piperidine and -morpholine hybrids. The results from experiments were validated using computational calculations, and the affinity between these compounds and Acetylcholinesterase/Butyrylcholinesterase was estimated through molecular docking.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Wei-Min Chen, Juan-Juan Shao, Yi Zhang, Zhen-Dong Xue, Peng-Lai Liu, Jian-Ling Ni, Li-Zhuang Chen, Qiang Gao, Fang-Ming Wang
Summary: This study synthesized and characterized a novel Mn-based LMOF, and achieved good results in detecting heavy metal Al3+ in water, showing good stability, high selectivity and sensitivity. This provides new insights into the potential applications of Mn-based MOFs in chemical sensing.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Jun-Xia Li, Yi-Jing Lu, Ke-Ying Quan, Li-Bing Wu, Xun Feng, Wei-Zhou Wang
Summary: This study synthesized two cobalt(II) complexes and analyzed their crystal structures using single-crystal X-ray diffraction. The results showed that the crystal structures of these complexes were different, and they exhibited different crystal packing and magnetic properties.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Yang Li, Yan Zhang, Hong Xu, Min Li, Zhen Li, Zi-yu Song, Ji-shi Chen, Yan-Jun Liu, Yong Sun, Zhao Yang
Summary: This study reports the synthesis and solid-state characterization of a new pharmaceutical cocrystal, PRO-BPE, which can enhance the solubility of the highly water-insoluble prodrug probenecid. The PRO-BPE cocrystals were found to have superior water solubility compared to pure PRO. This research provides valuable insights into improving the solubility of poorly soluble drugs.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Lucas G. B. Felicio, Bianca B. M. Vieira, Ivana S. Lula, Renata Diniz, Frank Alexis, Flavio B. Miguz, Frederico B. De Sousa
Summary: A novel spiropyran derivative was synthesized for heavy metals sensing in water. The results demonstrated that the new derivative can serve as a rapid, sensitive, and simple tool for detecting Hg2+ ions in water with high selectivity.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Junqing Meng, Jie Wang, Lijuan Wang, Chunhui Lyu, Haiyan Chen, Yingpei Lyu, Baisheng Nie
Summary: Material modification with low surface energy can achieve lower surface free energy on micro-and nano-rough structures, which is crucial for developing superhydrophobic surfaces. In this study, attapulgite (APT) was modified with alkylamine, alkylammonium salt, and stearic acid, and the interaction between low surface materials and attapulgite was explained. The results showed that the hydrophobicity of APT was significantly modified by the modifiers, and the surface free energy of the composites first decreased and then increased with increasing molecular number of low surface energy monomers.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Karan Goswami, Dipak Das, Parthasarathi Bera, Sounak Roy, Md. Motin Seikh, Prasanta Kumar Sinha, Arup Gayen
Summary: This work presents the development of a simple and highly active heterogeneous Pd catalyst for Suzuki-Miyaura carbon-carbon cross-coupling reaction. The NiPdFe-1 catalyst shows the best activity and stability among the prepared catalysts. It efficiently promotes the coupling reaction between aryl bromide and phenyl boronic acid under mild reaction conditions with high isolated yields.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Ekta Pardhi, Devendra Singh Tomar, Rahul Khemchandani, Gananadhamu Samanthula, Pankaj Kumar Singh, Neelesh Kumar Mehra
Summary: The main aim of this study was to prepare a drug-drug coamorphous system to improve the physiochemical properties, solubility and stability of Apremilast and Indomethacin. Various solid-state characterization techniques were used to characterize the prepared system. Molecular level interactions were studied using molecular modeling and ATR-FTIR and 1H NMR. Solubility and dissolution studies showed the benefits of the coamorphous system. The system was found to be stable for a period of five months. Permeation study also demonstrated improved flux for both drugs compared to their crystalline forms. The coamorphous system showed anti-psoriatic and anti-melanogenic activity based on molecular docking results. Overall, the developed CAM-based supersaturated system exhibited improved physicochemical properties and physical stability.
JOURNAL OF MOLECULAR STRUCTURE
(2024)