Synthesis of new bimetallic phosphate (Al/Ag3PO4) and study for its Catalytic performance in the synthesis of 1,2-dihydro-l-phenyl-3H-naphth [1,2-e]-[1,3] oxazin-3-one derivatives

This work aims to prepare a new bimetallic phosphate catalyst using a new simple and effective method. This new catalyst was ready for the first time by a modification of Triple Super Phosphate (TSP) fertilizer with silver sulfate (AgSO4), followed by the impregnation of the aluminum atoms using aluminum nitrate (Al(NO3)3). The use of Al/Ag3PO4, for the first time as a heterogeneous catalyst in organic chemistry, offers a new, efficient, and green pathway for synthesizing 1,2-dihydro-l-phenyl-3H-naphth[1,2-e]-[1,3]oxazin-3-one derivatives by one-pot three-component cyclocondensation of b-naphthol, aryl aldehyde, and urea. The structure and the morphology of the prepared catalyst were characterized by spectroscopic methods such as X-Ray Diffraction (XRD), Fourier Transform Infrared spectroscopy (FT-IR), and dispersive X-ray spectrometry coupled with a scanning electron microscope (EDX-SEM). In addition, the optimization of the reaction parameters was carried out considering the effect of catalyst amount, the temperature, and the solvent. The procedure described herein allowed a comfortable preparation of oxazine derivatives with excellent yields, short reaction times, and in the absence of organic solvent.

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SCMNPs@Uridine/Zn: An efficient and reusable heterogeneous nanocatalyst for the rapid one-pot synthesis of tricyclic fused pyrazolopyranopyrimidine and 3-methyl carboxylate substituted pyrano[2,3-c]pyrazole derivatives under solvent-free conditions

Polish Journal of Chemical Technology ◽

10.2478/pjct-2020-0013 ◽

2020 ◽

Vol 22 (2) ◽

pp. 20-33 ◽

Cited By ~ 3

Author(s):

Jia Wei ◽

Wenjun Gui ◽

Yanjun Cui ◽

Zhifang Zhang ◽

Qahtan A. Yousif

Keyword(s):

Hydrazine Hydrate ◽

Reaction Times ◽

Solvent Free ◽

Pyrazole Derivatives ◽

X Ray Diffraction ◽

One Pot ◽

Heterogeneous Nanocatalyst ◽

X Ray ◽

Solvent Free Conditions ◽

Ft Ir

AbstractSCMNPs@Uridine/Zn is utilized as an environmental-friendly and efficient heterogeneous nanocatalyst for two one-pot four-component condensation reactions, containing hydrazine hydrate, arylaldehyde, ethyl acetoacetate, and barbituric acid to yield tricyclic fused pyrazolopyranopyrimidine derivatives (5a-q), and hydrazine hydrate, arylaldehyde, malononitrile, and dimethyl acetylenedicarboxylate/diethyl acetylenedicarboxylate to yield 3-methyl carboxylate substituted pyrano[2,3-c]pyrazole derivatives (8a-y) under solvent-free conditions with high to excellent yields. The main advantages of this process are easy work-up, short reaction times, no chromatographic purifications, and recyclability of the catalyst for a minimum of six runs without any significant decrease in yields of the products. Also, the prepared catalyst SCMNPs@Uridine/Zn was synthesized and fully characterized by various techniques including Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray (EDX), thermogravimetric analysis (TGA), X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and Raman spectroscopy.

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Formation of ZnO/Zn0.5Cd0.5Se Alloy Quantum Dots in the Presence of High Oleylamine Contents

Nanomaterials ◽

10.3390/nano9070999 ◽

2019 ◽

Vol 9 (7) ◽

pp. 999

Author(s):

Yi-An Chen ◽

Kuo-Hsien Chou ◽

Yi-Yang Kuo ◽

Cheng-Ye Wu ◽

Po-Wen Hsiao ◽

...

Keyword(s):

Electron Microscopy ◽

Quantum Dots ◽

Particle Size ◽

X Ray Diffraction ◽

One Pot ◽

X Ray ◽

Transmission Electron ◽

Average Size ◽

Alloy Quantum Dots ◽

First Time

To the best of our knowledge, this report presents, for the first time, the schematic of the possible chemical reaction for a one-pot synthesis of Zn0.5Cd0.5Se alloy quantum dots (QDs) in the presence of low/high oleylamine (OLA) contents. For high OLA contents, high-resolution transmission electron microscopy (HRTEM) results showed that the average size of Zn0.5Cd0.5Se increases significantly from 4 to 9 nm with an increasing OLA content from 4 to 10 mL. First, [Zn(OAc)2]–OLA complex can be formed by a reaction between Zn(OAc)2 and OLA. Then, Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) data confirmed that ZnO is formed by thermal decomposition of the [Zn(OAc)2]–OLA complex. The results indicated that ZnO grew on the Zn0.5Cd0.5Se surface, thus increasing the particle size. For low OLA contents, HRTEM images were used to estimate the average sizes of the Zn0.5Cd0.5Se alloy QDs, which were approximately 8, 6, and 4 nm with OLA loadings of 0, 2, and 4 mL, respectively. We found that Zn(OAc)2 and OLA could form a [Zn(OAc)2]–OLA complex, which inhibited the growth of the Zn0.5Cd0.5Se alloy QDs, due to the decreasing reaction between Zn(oleic acid)2 and Se2−, which led to a decrease in particle size.

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Generalized Methodology for Inserting Metal Heteroatoms into the Layered Zeolite Precursor RUB-36 by Interlayer Expansion

Crystals ◽

10.3390/cryst10060530 ◽

2020 ◽

Vol 10 (6) ◽

pp. 530 ◽

Cited By ~ 2

Author(s):

Chaoqun Bian ◽

Xiao Wang ◽

Lan Yu ◽

Fen Zhang ◽

Jie Zhang ◽

...

Keyword(s):

Photoelectron Spectroscopy ◽

Inductively Coupled Plasma ◽

Catalytic Performance ◽

X Ray Diffraction ◽

Zeolite Sample ◽

X Ray ◽

Inductively Coupled ◽

Temperature Programmed ◽

First Time ◽

N2 Sorption

The incorporation of metal heteroatoms into zeolites is an effective modification strategy for enhancing their catalytic performance. Herein, for the first time we report a generalized methodology for inserting metal heteroatoms (such as Sn, Fe, Zn, and Co) into the layered zeolite precursor RUB-36 via interlayer expansion by using the corresponding metal acetylacetate salt. Through this generalized methodology, Sn-JHP-1, Fe-JHP-1, Zn-JHP-1 and Co-JHP-1 zeolites could be successfully prepared by the reaction of RUB-36 and corresponding metal acetylacetate salt at 180 °C for 24 h in the presence of HCl solution. As a typical example, Sn-JHP-1 and calcined Sn-JHP-1 (Sn-JHP-2) zeolite is well characterized by the X-ray diffraction (XRD), diffuse reflectance ultraviolet-visible (UV-Vis), inductively coupled plasma (ICP), N2 sorption, temperature-programmed-desorption of ammonia (NH3-TPD) and X-ray photoelectron spectroscopy (XPS) techniques, which confirm the expansion of adjacent interlayers and thus the incorporation of isolated Sn sites within the zeolite structure. Notably, the obtained Sn-JHP-2 zeolite sample shows enhanced catalytic performance in the conversion of glucose to levulinic acid (LA) reaction.

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Ferrocene-Containing Ionic Liquid Supported on Silica Nanospheres (SiO2@Imid-Cl@Fc) as a Mild and Efficient Heterogeneous Catalyst for the Synthesis of Pyrano[3,2-b]Pyran Derivatives Under Ultrasound Irradiation

Journal of Chemical Research ◽

10.3184/174751918x15161933697754 ◽

2018 ◽

Vol 42 (1) ◽

pp. 7-12 ◽

Cited By ~ 13

Author(s):

Reza Teimuri-Mofrad ◽

Somayeh Esmati ◽

Masoumeh Rabiei ◽

Mahdi Gholamhosseini-Nazari

Keyword(s):

Ionic Liquid ◽

Reaction Times ◽

Aromatic Aldehydes ◽

Ultrasound Irradiation ◽

Xrd Analysis ◽

Catalytic Performance ◽

Significant Loss ◽

One Pot ◽

X Ray ◽

Three Component Reaction

A novel heterogeneous silica nanosphere-supported ferrocene-containing ionic liquid catalyst (SiO2@Imid-Cl@Fc) was designed and synthesised and was systematically characterised by Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDX) and X-ray diffraction (XRD) analysis. The catalytic activity of the SiO2@Imid-Cl@Fc catalyst was tested in a one-pot, three-component reaction of malononitrile and kojic acid with 15 aromatic aldehydes at room temperature under ultrasound irradiation. The products were pyrano[3,2-b]pyran derivatives, four of which are new. The catalyst exhibited good catalytic performance over short reaction times (15–20 min) and could be recycled at least five times without significant loss of activity.

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One-Pot Access to Diverse Functionalized Pyran Annulated Heterocyclic Systems Using SCMNPs@BPy-SO3H as a Novel Magnetic Nanocatalyst

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS ◽

10.9767/bcrec.15.2.6693.348-366 ◽

2020 ◽

Vol 15 (2) ◽

pp. 348-366 ◽

Cited By ~ 1

Author(s):

Ke Chen ◽

Guangzu He ◽

Qiong Tang ◽

Qahtan A.Yousif

Keyword(s):

Magnetic Field ◽

Reaction Times ◽

Vibrating Sample Magnetometry ◽

X Ray Diffraction ◽

Magnetic Nanocatalyst ◽

Permanent Magnetic Field ◽

One Pot ◽

X Ray ◽

The One ◽

Scanning Electron

The SCMNPs@BPy-SO3H catalyst was prepared and characterized using Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Vibrating Sample Magnetometry (VSM), Energy Dispersive X-ray Spectroscopy (EDX), X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). Afterwards, its capability was efficiently used to promote the one-pot, three-component synthesis of pyrano[2,3-c]pyrazole and 2-amino-3-cyano-pyrano[3,2-c]chromen-5(4H)-one derivatives. The strategy resulted in the desired products with excellent yields and short reaction times. The SCMNPs@BPy-SO3H catalyst was readily recovered using a permanent magnetic field and it was reused in six runs with a slight decrease in catalytic activity. Copyright © 2020 BCREC Group. All rights reserved

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Microstructural of Cr/MWCNT Composites and its Catalysis in Synthesis of Biodiesel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.455-456.1053 ◽

2012 ◽

Vol 455-456 ◽

pp. 1053-1059

Author(s):

Xue Hai Fan ◽

Guo Min Xiao

Keyword(s):

Electron Microscopy ◽

Potassium Dichromate ◽

Catalytic Performance ◽

Impregnation Method ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Multi Walled Carbon Nanotubes ◽

Ft Ir ◽

Walled Carbon Nanotubes

Multi-walled carbon nanotubes (MWCNTs), potassium dichromate (K2Cr2O7) and sulphuric acid were used for the preparation of Cr/MWCNT composite by impregnation method. The composites were comprehensively characterized by transmission electron microscopy （TEM），energy dispersive X-ray analysis (EDX), infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and thermal gravity analysis (TGA). Due to its unique electrical and structural properties, this composite was applied to the synthesis of biodiesel (FAME) as a catalyst, showing effectively catalytic performance.

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One-Pot Hydrothermal Synthesis, Characterization, and Desulfurization Performance of ZnFe2O4/AC Composites

Journal of Nanotechnology ◽

10.1155/2018/9417067 ◽

2018 ◽

Vol 2018 ◽

pp. 1-10 ◽

Cited By ~ 1

Author(s):

Hui-qiang Wang ◽

Ming-hua Liu ◽

Xin Luo ◽

Yi-fan Liu ◽

Fei-er Chen ◽

...

Keyword(s):

Adsorption Capacity ◽

Photoelectron Spectroscopy ◽

Performance Test ◽

X Ray Diffraction ◽

One Pot ◽

X Ray ◽

Synthesis Conditions ◽

Ft Ir ◽

The One ◽

Sulfur Adsorption

ZnFe2O4/AC composites were prepared by the one-pot hydrothermal method using the activated carbon (AC) as a carrier. The synthesis conditions were optimized by a single-factor experiment. The structural, textural, and surface properties of the adsorbent have been comprehensively characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, Brunauer–Emmett–Teller (BET) measurements, and X-ray photoelectron spectroscopy (XPS) analysis. The SO2 removal capacities of the composites were investigated via testing the adsorption capacity at the self-made desulfurization equipment. The results show that the adsorption capacity of ZnFe2O4/AC composites is much higher than that of the AC and ZnFe2O4 samples, respectively. The composite overcomes the disadvantages of the traditional sintering, showing a very high desulfurization performance. The breakthrough time was 147 min, and the sulfur adsorption capacity could reach 23.67% in the desulfurization performance test.

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Oxido- and Dioxido-Vanadium(V) Complexes Supported on Carbon Materials: Reusable Catalysts for the Oxidation of Cyclohexane

Nanomaterials ◽

10.3390/nano11061456 ◽

2021 ◽

Vol 11 (6) ◽

pp. 1456

Author(s):

Manas Sutradhar ◽

Marta A. Andrade ◽

Sónia A. C. Carabineiro ◽

Luísa M. D. R. S. Martins ◽

Maria de Fátima C. Guedes da Silva ◽

...

Keyword(s):

Mass Spectrometry ◽

Carbon Materials ◽

Ionization Mass ◽

X Ray Diffraction ◽

Functionalized Carbon Nanotubes ◽

X Ray ◽

Tert Butylhydroperoxide ◽

Ft Ir ◽

First Time ◽

Catalytic Performances

Oxidovanadium(V) and dioxidovanadium(V) compounds, [VO(OEt)L] (1) and [Et3NH][VO2L] (2), were synthesized using an aroylhydrazone Schiff base (5-bromo-2-hydroxybenzylidene)-2-hydroxybenzohydrazide (H2L). They were characterized by elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), (1H and 51V) nuclear magnetic resonance (NMR), electrospray ionization mass spectrometry (ESI-MS) and single crystal X-ray diffraction analyses. Both complexes were immobilized on functionalized carbon nanotubes and activated carbon. The catalytic performances of 1 and 2, homogenous and anchored on the supports, were evaluated for the first time towards the MW-assisted peroxidative oxidation (with tert-butylhydroperoxide, TBHP) of cyclohexane under heterogeneous conditions. The immobilization of 1 and 2 on functionalized carbon materials improved the efficiency of catalytic oxidation and allowed the catalyst recyclability with a well-preserved catalytic activity.

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Rapid Four-component Synthesis of Dihydropyrano[2,3-c]pyrazoles using Nano-egg Shell/Ti(IV) as a Highly Compatible Natural Based Catalyst

10.21203/rs.3.rs-61024/v1 ◽

2020 ◽

Author(s):

Arefeh Dehghani Tafti ◽

Bi BiFatemeh Mirjalili ◽

Abdolhamid Bamoniri ◽

Naeimeh Salehi

Keyword(s):

Thermo Gravimetric Analysis ◽

Reaction Times ◽

Gravimetric Analysis ◽

X Ray Diffraction ◽

X Ray ◽

Solvent Free Conditions ◽

Ft Ir ◽

Egg Shell ◽

High Yields ◽

Work Up

Abstract Nano-egg shell/Ti(IV) (NEST) as a novel naturally based catalyst was prepared, characterized and applied for the synthesis of dihydropyrano[2,3-c]pyrazole [DHPP] derivatives. The characterization of NEST was performed using Fourier Transform Infrared (FT-IR) spectroscopy, X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Energy-Dispersive X-ray Spectroscopy (EDX), and Thermo Gravimetric Analysis (TGA). DHPPs were synthesized in the presence of NEST via a four component reaction of aldehydes, ethyl acetoacetate, malononitrile and hydrazine hydrate at room temperature under solvent free conditions. The principal affairs of this procedure are easy work-up, high yields of pure products without the use of any toxic organic solvents, mild condition and short reaction times.

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Photocatalytic degradation of bisphenol a with α-Fe2O3 fibers and particles

Science of Sintering ◽

10.2298/sos1903265t ◽

2019 ◽

Vol 51 (3) ◽

pp. 265-276

Author(s):

Natasa Tomic ◽

Marija Vuksanovic ◽

Djordje Veljovic ◽

Veljko Djokic ◽

Aleksandar Marinkovic ◽

...

Keyword(s):

Bisphenol A ◽

Textural Properties ◽

Ammonium Hydroxide ◽

Catalytic Performance ◽

Electrospinning Process ◽

Photocatalytic Decomposition ◽

X Ray Diffraction ◽

X Ray ◽

Infra Red ◽

Ft Ir

Two-step synthesis of Fe2O3 particles, performed by precipitation from iron(III) chloride (FeCl3?6H2O) using ammonium hydroxide in first step and calcination at 400 and 700?C during 4 h, provided Fe2O3 400?C and Fe2O3 700?C photocatalysts, respectively. The electrospinning process was used to prepare iron oxide fibers, named Fe2O3 fiber. Morphological and structural properties of samples were determined by Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), Fourier Transform Infra-Red (FT-IR) and BET/BJH analysis. It was found that the ?-Fe2O3 phase (hematite) has shown the compaction of the structure at 700?C, i.e. lower textural properties. Hematite particles and fibers are used for bisphenol A (BPA) removal by photocatalytic decomposition and the enhanced catalytic performance was found with the use of Fe2O3 400?C particles.

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