Results 11 to 20 of about 484,835 (289)

Applications and Preparation Methods of Copper Chromite Catalysts: A Review [PDF]

, 2011
In this review article various applications and preparation methods of copper chromite catalysts have been discussed. While discussing it is concluded that copper chromite is a versatile catalyst which not only catalyses numerous processes of ...
Prasad, R., Singh, Pratichi, Ram Prasad, Pratichi Singh   +3 more
core   +2 more sources

Ammonium metavanadate (NH4VO3): a highly efficient and eco-friendly catalyst for one-pot synthesis of pyridines and 1,4-dihydropyridines

Scientific Reports, 2022
In this study, we reported the ammonium metavanadate (NH4VO3) as an efficient, cost-effective, and mild catalyst for the synthesis of substituted pyridines via a one-pot pseudo four-component reaction.
Jamal Rahimi, Maryam Niksefat, Marzieh Heidari, Mehdi Naderi, Hadis Abbasi, Mohammad Tajik Ijdani, Ali Maleki   +6 more
doaj   +1 more source

Recovery of platinum group metals from spent automotive catalysts: A review

Cleaner Engineering and Technology, 2021
In the last decades, a worldwide investment in the recovery or substitution of platinum group metals (PGMs) has been financed. PGMs have been classified as critical raw materials (CRMs), thus a circular economy model should be implemented for their ...
Iakovos Yakoumis, Marianna Panou, Anastasia Maria Moschovi, Dimitris Panias   +3 more
doaj   +1 more source

A magnetic antibody-conjugated nano-system for selective delivery of Ca(OH)2 and taxotere in ovarian cancer cells

Communications Biology, 2022
A magnetic drug delivery system containing polyvinyl alcohol, gold nanoparticles, and sortilin antibody followed by the plasmonic photothermal heating strategy for the controlled drug release is proposed, with use in ovarian cancer demonstrated.
Reza Taheri-Ledari, Ehsan Zolfaghari, Simindokht Zarei-Shokat, Amir Kashtiaray, Ali Maleki   +4 more
doaj   +1 more source

Utilizing magnetic xanthan gum nanocatalyst for the synthesis of acridindion derivatives via functionalized macrocycle Thiacalix[4]arene

Scientific Reports, 2023
An effective method for synthesizing acridinedione derivatives using a xanthan gum (XG), Thiacalix[4]arene (TC4A), and iron oxide nanoparticles (IONP) have been employed to construct a stable composition, which is named Thiacalix[4]arene-Xanthan Gum ...
Fereshte Hassanzadeh-Afruzi, Mohammad Mehdi Salehi, Ghazaleh Ranjbar, Farhad Esmailzadeh, Peyman Hanifehnejad, Mojtaba Azizi, Faten Eshrati yeganeh, Ali Maleki   +7 more
doaj   +1 more source

Environmentally Benign Bifunctional Solid Acid and Base Catalysts [PDF]

, 2014
Solid bifunctional acid–base catalysts were prepared in two ways on an amorphous silica support: (1) by grafting mercaptopropyl units (followed by oxidation to propylsulfonic acid) and aminopropyl groups to the silica surface (NH2–SiO2–SO3H), and (2) by ...
Shiju, N.R., Shiju, N. Raveendran, Elmekawy, A., D. Robert Brown, Rothenberg, Gadi, Brown, D.R., Ahmed A. Elmekawy, N. Raveendran Shiju, Rothenberg, G., Gadi Rothenberg, Elmekawy, Ahmed A.   +10 more
core   +1 more source

Unraveling sulfur chemistry in interstellar carbon oxide ices

Nature Communications, 2022
The authors report photolytic H atom transfer reactions of HOSO• in astronomical CO & CO2 ices, forming reactive acyl radicals & molecular complexes with SO & SO2.
Xiaolong Li, Bo Lu, Lina Wang, Junfei Xue, Bifeng Zhu, Tarek Trabelsi, Joseph S. Francisco, Xiaoqing Zeng   +7 more
doaj   +1 more source

Convenient synthesis of dipeptide structures in solution phase assisted by a thioaza functionalized magnetic nanocatalyst

Scientific Reports, 2022
In this study, a heterogeneous nanocatalyst is presented that is capable to efficiently catalyze the synthetic reactions of amide bond formation between the amino acids. This nanocatalyst which is named Fe3O4@SiO2/TABHA (TABHA stands for thio-aza-bicyclo-
Reza Taheri-Ledari, Fereshteh Rasouli Asl, Mahdi Saeidirad, Amir Kashtiaray, Ali Maleki   +4 more
doaj   +1 more source

Synthesis and characterization of nanocatalyst Cu2+/mesoporous carbon for amidation reactions of alcohols

Scientific Reports, 2023
In this research, mesoporous carbon (MC) with high efficiency (0.65 g yield from 1.0 g MCM-41 and 1.25 g sucrose) was successfully prepared by adding carbon precursor (sucrose) in a single step with ultrasonic waves, which reduces time and energy cost ...
Hossein Ghafuri, Peyman Hanifehnejad, Afsaneh Rashidizadeh, Zeinab Tajik, Hanieh Dogari   +4 more
doaj   +1 more source

Assessment of catalytic and antibacterial activity of biocompatible agar supported ZnS/CuFe2O4 magnetic nanotubes

Scientific Reports, 2022
The tubular magnetic agar supported ZnS/CuFe2O4 nanocomposite was fabricated via a simple procedure. Next, various properties of this nanocomposite were studied by employing multiple characterization techniques including FT-IR, EDX, SEM, TEM,VSM, XRD ...
Fereshte Hassanzadeh-Afruzi, Zeinab Amiri-Khamakani, Shahrzad Bahrami, Mohammad Reza Ahghari, Ali Maleki   +4 more
doaj   +1 more source