Sami Publishing Company
Chemical Methodologies
2645-7776
2588-4344
1
1
2017
06
01
Silica Boron Sulfonic Acid as a New and Efficient Catalyst for the Green Synthesis of Quinoxaline Derivatives at Room Temperature
1
11
EN
Sami
Sajjadifar
0000-0001-8661-1264
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
ss.sajjadifar@gmail.com
Issa
Amini
0000-0003-0586-6615
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
issaamini5548@gmail.com
Tayebeh
Amoozadeh
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
tayebh.am1295@gmail.com
10.22034/chemm.2017.49740
A simple, highly efficient and green procedure for the condensation of aryl and alkyl 1,2-diamines with α-diketones in the presence of catalytic amount of silica boron sulfonic acid (SBSA) at room temperature is described. By Using this method, quinoxaline derivatives as biologically interesting compounds are produced in high to excellent yields and short reaction times.
Boron sulfonic acid (BSA),quinoxaline synthesis,1,2-Diamine,α-diketone,Green chemistry
https://www.chemmethod.com/article_49740.html
https://www.chemmethod.com/article_49740_03ffeab6736b761e100737476d22e3f1.pdf
Sami Publishing Company
Chemical Methodologies
2645-7776
2588-4344
1
1
2017
06
01
Synthesis and Characterization of Novel Composite-Based Phthalocyanine Used as Efficient Photocatalyst for the Degradation of Methyl Orange
12
27
EN
Hossein
Salavati
Chemistry Department, Payame Noor University, 19395-3697, Tehran, I. R. of Iran
hosseinsalavati@yahoo.com
Abbas
Teimouri
Chemistry Department, Payame Noor University, 19395-3697, Tehran, I. R. of Iran
a_teimoory@yahoo.com
Shahnaz
Kazemi
Department of Chemistry, Birjand University, 97179-414, Birjand, Iran
s_kazemi7026@yahoo.com
10.22631/chemm.2017.90331.1002
In this study, Copper-tetraaminophthalocyanine (CuTAP) was supported on polyvinylcholoride by reflux condition to produce heterogeneous recovarable catalyst. This catalyst was characterized using Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Scanning electron microscopy (SEM) and UV-vis spectroscopy. The results showed that the photocatalytic degradation of methyl orange was performed in mild conditions at ambient pressure and temperature under visible light. The synthesized catalyst could be readily separated from the catalytic system by centrifuging and loss of activity was negligible when the catalyst was recovered in four consecutive cycles. The effects of operational various factors such as catalyst amount, initial dye concentration and contact time on degradation of methyl orange were investigated. Optimization results showed that maximum degradation of methyl orange efficiency 98.6 % was achieved at the optimum conditions.
Phthalocyanines,Photocatalytic degradation,Polymer,Heterogenous Catalyst
https://www.chemmethod.com/article_49741.html
https://www.chemmethod.com/article_49741_2756ba16c23a3af5768921f79fa3b54b.pdf
Sami Publishing Company
Chemical Methodologies
2645-7776
2588-4344
1
1
2017
06
01
Molecular Structure, NMR, FMO, MEP and NBO Analysis of Ethyl-(Z)-3-phenyl-2-(5-phenyl-2H-1,2,3,4-tetraazol-2-yl)-2-propenoate Based on HF and DFT Calculations
28
48
EN
Ali
Ramazani
0000-0003-3072-7924
Department of Chemistry, University of Zanjan, P O Box 45195-313, Zanjan, Iran
aliramazani@gmail.com
Masoome
Sheikhi
Young Researchers and Elite Club, Gorgan Branch, Islamic Azad University, Gorgan, Iran
m.sheikhi2@gmail.com
Hooriye
Yahyaei
Department of Chemistry, Zanjan Branch, Islamic Azad University, Zanjan, Iran
hooriye_yahyaei@yahoo.com
10.22631/chemm.2017.95510.1006
In the present work, for the first time the quantum calculations of Ethyl-(Z)-3-phenyl-2-(5-phenyl-2H-1,2,3,4-tetraazol-2-yl)-2-propenoate are evaluated using the HF and B3LYP methods with 6-311++G** basis set. The geometry of the title compound was optimized by B3LYP/6-311++G** level of theory. The theoretical 1H and 13C NMR chemical shift values of the title compound are calculated and compared with the experimental results. The computed data are in good agreement with the experimental data. Frontier molecular orbitals (FMOs), molecular electrostatic potential (MEP), energy gap between HOMO and LUMO, electronic properties, thermodynamic parameters, natural charges distribution (NBO charges) and NBO analysis were investigated by theoretical calculations.<br /> In the present work, for the first time the quantum calculations of Ethyl-(Z)-3-phenyl-2-(5-phenyl-2H-1,2,3,4-tetraazol-2-yl)-2-propenoate are evaluated using the HF and B3LYP methods with 6-311++G** basis set. The geometry of the title compound was optimized by B3LYP/6-311++G** level of theory. The theoretical 1H and 13C NMR chemical shift values of the title compound are calculated and compared with the experimental results. The computed data are in good agreement with the experimental data. Frontier molecular orbitals (FMOs), molecular electrostatic potential (MEP), energy gap between HOMO and LUMO, electronic properties, thermodynamic parameters, natural charges distribution (NBO charges) and NBO analysis were investigated by theoretical calculations.
Ttetrazole,DFT,Natural charge,NBO analysis,Electronic properties
https://www.chemmethod.com/article_49742.html
https://www.chemmethod.com/article_49742_ef2692a576f4c31903250a8ad37df743.pdf
Sami Publishing Company
Chemical Methodologies
2645-7776
2588-4344
1
1
2017
06
01
Central Composite Design Optimization of Methylene Blue Scavenger using Modified Graphene Oxide Based Polymer
49
67
EN
Mehrnaz
Alem
Department of Chemistry, Payame Noor University, 19395-3697, Tehran, Iran
mehrnaz.alem@gmail.com
Abbas
Teimouri
Department of Chemistry, Payame Noor University, 19395-3697, Tehran, Iran
a_teimoory@yahoo.com
Hossein
Salavati
Department of Chemistry, Payame Noor University, 19395-3697, Tehran, Iran
hosseinsalavati@yahoo.com
Shahnaz
Kazemi
Department of Chemistry, Birjand University, 97179-414, Birjand, Iran
s_kazemi7026@yahoo.com
10.22631/chemm.2017.49743
This research reports the synthesis, characterization and catalytic properties ofnovel supported catalyst based on nickel acetate hydrate (denoted as NiOAC) immobilized on graphene oxide (denoted as GO) modified polyethylene glycol (abbreviated as PEG). The supported catalyst was characterized by X-ray diffraction spectroscopy (XRD), Scanning electron microscopy (FESEM), Furrier transforms infrared spectroscopy (FT-IR) and diffuse reluctance spectroscopy (DRS). In addition, under mild reaction conditions, the mentioned catalyst exhibited high photocatalytic activity and reusability in photocatalytic degradation of dyes as pollutants. For this research, a statistical method called Response Surface Methodology (RSM) has been used to economize the number of experiments and their meaningful interpretation.The effect of various factors such as catalyst amount, time, pH on degradation of methylene blue were investigated. Optimization results for 20 ppm methylene blue showed that maximum degradation efficiency 92.9% was achieved at the optimum conditions: catalyst amount 24.6 mg, pH= 7.6 and time 23.3 min.
graphene oxide,polyethylene glycol,Nanocomposite,Photocatalytic
https://www.chemmethod.com/article_49743.html
https://www.chemmethod.com/article_49743_896f6839004772117191ff9386c8a1c1.pdf
Sami Publishing Company
Chemical Methodologies
2645-7776
2588-4344
1
1
2017
06
01
Epoxidation of Norbornene in the Presence of Oxidizing Agents
68
73
EN
Hadi
Jabbari
Department of Management, Payame Noor University, Tehran, Iran
hadijabbari@yahoo.com
10.22631/chemm.2017.94094.1004
Part1: epoxidation of norbornen and norbornadien in the presence of dimethyloxirane as reagent oxidant has been investigated.<br />Part 2: A general procedure for the epoxidation of norbornen using hydrogen peroxide as the oxidant in the presence of ruthenium trichloride has been investigated. norbornene gave the epoxides at room temperature in good to excellent yield. And epoxy norbornene identified by H-NMR,FT-IR,13C-NMR method spectroscopics
dimethyldioxirane,norbornen,norbornadien,Rucl3.H2O
https://www.chemmethod.com/article_50394.html
https://www.chemmethod.com/article_50394_8d35b0aeb82ed283be6ae7af78744769.pdf
Sami Publishing Company
Chemical Methodologies
2645-7776
2588-4344
1
1
2017
06
01
An Insight on Kinetic Adsorption of Congo Red Dye from Aqueous Solution using Magnetic Chitosan Based Composites as Adsorbent
74
86
EN
Nahid
Rasouli
Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, IRAN
n.rasooli55@yahoo.com
Hossein
Salavati
Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, IRAN
hosseinsalavati@yahoo.com
Maryam
Movahedi
Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, IRAN
maria_movahedi@yahoo.com
Ali
Rezaei
Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, IRAN
ali_rezaei@yahoo.com
10.22631/chemm.2017.95949.1007
In the present research, a series of magnetic chitosan based composites with the general formula of NixMn1−xFe2O4/CS were synthesized from spinel-type transition metal ferrites [NixMn1−xFe2O4 (where x= 0, 0.2, 0.5 and 1.0)] and chitosan (CS) as a polymer. The structure and composition of the synthesized samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). The adsorption activity of the synthesized magnetic chitosan based composites was evaluated for the removal of Congo red (CR) dye from aqueous solution. Furthermore, the influence of the Mn content on adsorption capacity of the synthesized magnetic chitosan based composites were studied. The results of adsorption kinetic of CR dye using spinel-type transition metals NixMn1−xFe2O4 and NixMn1−xFe2O4/CS followed pseudo- second order model. The results indicated that 74% of CR dye solution were removed via adsorption using Ni0.5Mn0.5Fe2O4/CS after 180 min. The adsorption performance show that the chitosan based composites can be more efficient than spinel-type transition metals for removal of CR dye. Moreover, the magnetic chitosan based composites can be quickly separated from the aqueous solution by an external magnet after adsorption process.
kinetic adsorption,Magnetic adsorbent,Congo red,Adsorption
https://www.chemmethod.com/article_50395.html
https://www.chemmethod.com/article_50395_477e2d623f07c7c306e0b90da76b1da3.pdf