Talat Baran
Aksaray University
Suzuki reactionNuclear chemistryFourier transform infrared spectroscopyCatalysisHeterogeneous catalysisOrganic chemistryChemistryReducing agentPolymer chemistryMaterials scienceSchiff baseCyanationChitosanArylChitinChemical engineeringCoupling reactionPalladiumThermal stabilityBotanyBiology
102Publications
34H-index
2,589Citations
Publications 99
Newest
#1Melike Çalışkan (Aksaray University)H-Index: 1
#2Talat Baran (Aksaray University)H-Index: 34
Designing of eco-friendly, low cost, and thermally stable stabilizing/supporting agents are always desired for production of catalyst systems which provide good catalytic performance in organic reactions. In this study, a novel, green, and efficient stabilizer containing chitosan/Co3O4 microspheres (CS/Co3O4) was developed. Palladium nanoparticles (Pd NPs) were then successfully immobilized on CS/Co3O4 as a heterogeneous nanocatalyst (Pd NPs/CS/Co3O4). Characterization of the designed materials ...
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#1Samaneh Mahmoudi-Gom Yek (University of Qom)H-Index: 3
#1Samaneh Mahmoudi-Gom Yek (University of Qom)
Last. Mohammadreza Shokouhimehr (SNU: Seoul National University)H-Index: 47
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Abstract In this study, a novel and recyclable heterogeneous Pd(0) catalyst was synthesized via the immobilization of a Pd(0)-Schiff base complex onto the surface of halloysite (HaI) nanoclay and fully characterized by FTIR, TEM, TG/DTG, FE-SEM, EDS, elemental mapping, XPS and XRD. The catalytic role of Pd NPs@HaI nanocatalyst was then evaluated in the reduction of 4-nitrophenol (4-NP), congo red (CR), K3[Fe(CN)6] and methyl orange (MO) by employing NaBH4 as the reducing agent at room temperatur...
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#1Mahmoud Nasrollahzadeh (University of Qom)H-Index: 65
#2Nasrin Shafiei (University of Qom)H-Index: 5
Last. Mohammadreza Shokouhimehr (SNU: Seoul National University)H-Index: 47
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Abstract The present work studies the Sonogashira coupling reaction (SCR) between aryl halides and acetylenes under aerobic conditions using the catalytic complex of Pd nanoparticles (NPs) supported on a novel Schiff base modified chitosan-kaolin (Pd NPs@CS-Kao) in ethanol solvent. The prepared catalyst was characterized by TEM, SEM, FT-IR, XRD, EDS, XPS, elemental mapping, and Raman analyses. The products were formed in high yields. At the end of the reaction, Pd NPs@CS-Kao can be filtered and ...
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#1Talat Baran (Aksaray University)H-Index: 34
#2Sema Akay (Aksaray University)H-Index: 10
Last. Berkant Kayan (Aksaray University)H-Index: 15
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Natural minerals have a huge potential as stabilizers in the catalytic systems due to their high mechanical durability, porous surface, non-toxicity and abundance in nature. This study aims to the development of a magnetically retrievable, heterogeneous palladium catalytic system derived from volcanic tuff (VT), an abundant form of zeolite, for Suzuki–Miyaura coupling (SMC) reactions. For this purpose, a new catalyst support was designed by loading volcanic tuff with Fe3O4 (VT/Fe3O4) and palladi...
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#1Melike Çalışkan (Aksaray University)H-Index: 1
#2Talat Baran (Aksaray University)H-Index: 34
Abstract In this study, an eco-friendly and low cost magnetic nanocomposite consisting of chitosan/δ-FeOOH microspheres (CS/δ-FeOOH) was fabricated as a stabilizer by using a simple method. Pd nanoparticles (Pd NPs) were decorated on the designed chitosan/δ-FeOOH microspheres, and the resulting Pd NPs@CS/δ-FeOOH microspheres were employed as a heterogeneous catalyst in the construction of biaryl and benzonitriles. Pd NPs@CS/δ-FeOOH microspheres efficiently catalyzed the conversion of aryl iodide...
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#1Nasrin Shafiei (University of Qom)H-Index: 5
#2Mahmoud Nasrollahzadeh (University of Qom)H-Index: 65
Last. Mohammadreza Shokouhimehr (SNU: Seoul National University)H-Index: 47
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Abstract This work investigates the preparation of a catalytic complex of palladium nanoparticles supported on novel Schiff base modified chitosan-Unye bentonite microcapsules (Pd NPs@CS-UN). The complex has been characterized by FT-IR, EDS, XRD, TEM, HRTEM, Raman, ICP-OES and elemental mapping analyses. Pd NPs@CS-UN was used as a catalyst for Sonogashira coupling reactions between aryl halides and acetylenes, employing K2CO3 as the base and EtOH as a green solvent under aerobic conditions in wh...
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#1Sema Akay (Aksaray University)H-Index: 10
#2Talat Baran (Aksaray University)H-Index: 34
Last. Dimitrios Kalderis (Mediterranean University)H-Index: 24
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Abstract The objective of this study was the development of a novel, biochar-based Pd nanocatalyst and its evaluation for the promotion of the Suzuki-Miyaura coupling reaction. The Fe3O4-Pd-biochar composite was successfully characterized through a range of spectroscopic and elemental analysis techniques. Its catalytic activity was initially assessed using p-NO2C6H4I as a model reactant and later for the production of biaryls from a wide range of aryl halides, under microwave irradiation and sol...
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Abstract In this study, a novel catalyst system with high activity and easy recoverability was successfully prepared through the deposition of Pd nanoparticles (NPs) onto designed sustainable hybrid beads containing magnetic cobalt ferrite and chitosan (Pd/CoFe2O4/chitosan). The catalytic potential of Pd/CoFe2O4/chitosan hybrid nanocatalyst was then assessed in i) preparation of benzonitriles via aryl halides cyanation and ii) reduction of 2-nitroaniline (2-NA). Various aryl iodides and bromides...
1 CitationsSource
#1Mahmoud Nasrollahzadeh (University of Qom)H-Index: 65
#1Mahmoud Nasrollahzadeh (University of Qom)H-Index: 33
Last. Talat Baran (Aksaray University)H-Index: 34
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Abstract Polymers are extensively used as supports for the fabrication of catalysts. They have many advantages such as high thermal stability, ease of modification, high mechanical strength and large surface area. In recent years, the methods for the preparation of metal nanoparticles and complex based catalysts have been developed to a great extent. The presence of supports in the construction of catalysts prevents the accumulation of metal nanoparticles. In this review, polymer-supported ruthe...
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#1Melike Çalışkan (Aksaray University)H-Index: 1
#2Talat Baran (Aksaray University)H-Index: 34
Last. Mahmoud Nasrollahzadeh (University of Qom)H-Index: 65
view all 3 authors...
Abstract Iron based compounds are good candidates as supports to immobilize different transition metals due to their eco-friendly nature, capability of facilitating chemical modifications, inexpensiveness, high stability and easy recoverability. In this study, palladium nanoparticles (NPs) were successfully stabilized on designed Schiff base modified δ-FeOOH particles as a highly effective and readily recoverable heterogeneous catalyst (Pd-Sch-δ-FeOOH nanocatalyst). The catalyst was fabricated v...
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