Journal of Chemistry

Papers

Voulume: 14
Issue: 1
Article No. 1
A comparative study of catalytic functionalities of Ni/RHSiO2 and Ni/RHAC’s for nitrobenzene hydrogenation
T. ANIL KUMAR
Research Scholar, Dept. of Chemistry, Krishna University, Machilipatnam (India)
B.N. SRINIVAS
Department of Chemistry, Usha Rama College of Engg. & Technology, Vijayawada (India)
J. MASTAN
Research Scholar, Dept. of Chemistry, Krishna University, Machilipatnam (India)
Abstract :

Highly dispersed nickel nanoparticles on supports such as rice extracted SiO2 , and Activated carbon’s were prepared by impregnation and reductive deposition method by using hydrazine as reducing agent. The high light of this work is to compare the characteristics and activity of the catalysts prepared by both impregnation and reductive deposition method. All catalysts were characterized by various techniques such as BET, SEM, XRD, reduction behavior by using TPR technique. XRD results suggests that all the catalytic systems showing peaks corresponding to the supports as well as metal precursor. Ni/RHSiO2, catalyst prepared by reductive deposition method show excellent conversion of nitrobenzene to aniline. This is due to the presence of higher number of well dispersed surface Ni species than other catalysts as evidenced by SEM studies. TPR results reveal the formation of metallic Ni species in the reductive deposition method.

Keyword : Rice Husk, Silica, Activated Carbon, Nickel, Hydrogenation
Paper Download Count : 650
View Count : 586
Share
Facebook Twitter Google Plus LinkedIn Reddit
Article No. 2
Synthesis and characterization of monoazo pyrazolone dyes based on 1,3,4-thiadiazole and their dyeing performance on polyester fabric
MITCHLA S. M
Department of Chemistry, Navyug Science College, Surat, Gujarat (India)
PATEL F. T.
Department of Chemistry, Navyug Science College, Surat, Gujarat (India)
MALIK G. M. (gmmalik2010@gmail.com)
Department of Chemistry, Navyug Science College, Surat, Gujarat (India)
Abstract :

Here in this paper we report a new series of 1,3,4-thiadiazole based heterocyclic monoazo dyes which have been derived by the diazotization of N4-(5-benzyl-1,3,4-thiadiazol-2-yl)-1,3-thiazole-2,4-diamine with various phenyl pyrazolone as coupling components. The structure of the synthesized dyes was characterized by elemental analysis, IR, 1H NMR and UV spectroscopy with a view to determine their chemical structure. All the synthesized compounds were evaluated for their dyeing performance and fastness properties. The synthesized disperse dyes were found to possess very good dyeing properties.

Keyword : Heterocyclic dyes, 5-benzyl-1,3,4-thiadiazole-2-amine, Monoazo dyes, Pyrazolone, Dyeing performance
Paper Download Count : 671
View Count : 563
Share
Facebook Twitter Google Plus LinkedIn Reddit
Article No. 3
A study on seasonal variation in physico-chemical parameters and corrosion indices of coastal villages of Olpad and Choryasi taluka, Surat district
F. T. PATEL
Department of Chemistry, Navyug Science College, Surat, Gujarat,India.
A. S. PATEL
Department of Chemistry, Navyug Science College, Surat, Gujarat,India.
G. M. MALIK
Department of Chemistry, Navyug Science College, Surat, Gujarat,India.
S. M. MITCHLA (gmmalik2010@gmail.com)
Department of Chemistry, Navyug Science College, Surat, Gujarat,India.
Abstract :

Ground water is one of the most important natural resources for drinking water. To estimate quality of water in coastal region of Surat district, the study was made by us. Ground water samples were collected from different sampling stations of coastal villages of Olpad and Choryasi talukas of Surat district, Gujarat (India). The samples were collected from 20 different locations and analyzed for physico-chemical properties and different indices were calculated. Seasonal study was carried out for all these stations from May 2015 to April 2016. In this study, The results are compared with water quality standards laid down by ICMR and WHO. The results revealed that some of the samples were having high concentration of salts causing deterioration in quality of drinking water.

Keyword : Ground water, Physico-chemicals parameters, Corrosion indices, ICMR, WHO, Olpad and Choryasi Taluka
Paper Download Count : 545
View Count : 441
Share
Facebook Twitter Google Plus LinkedIn Reddit
Article No. 4
Chemical Characterisation of Medicinally Important Solanaceous plant Solanum xanthocarpum Schrad & Wendl
KUMUD MODI
Department of Chemistry, PMB Gujarati science college, Indore 452001 (M.P.), (India)
NEHA JATAV
Department of Chemistry, PMB Gujarati science college, Indore 452001 (M.P.), (India)
Abstract :

The plant Solanum xanthocarpum is widely distributed in the Himalayan (IHR) especially in kumaun Himalayan regions of India. It possess various potential due to its medicinal properties. Based on preliminary reports, there is a lot of interest in using the roots of this plant for treating various disorders in indigenous system of medicine such as antifertility, antipyretic, anticancer, anti-allergy, anti-inflammatory, antihistamine, hypoglycemic, antibacterial, antioxidant, anti-fungal properties. The purpose of work is to study medicinally active substances present in ethanol extract, Aqueous extract and Benzene extract obtained from roots powder of Solanum xanthocarpum. Preliminary Phytochemical screening of the extracts revealed the presence of Alkaloids, Carbohydrates, Phenolic compounds, tannins, Saponins, Steroids and Flavonoids.

Keyword : Solanum xanthocarpum, Chemical characterization, Medicinally active substances
Paper Download Count : 556
View Count : 501
Share
Facebook Twitter Google Plus LinkedIn Reddit
Article No. 5
LC/ESI/MS/MS method development and validation for the determination of sulfonamide antibiotic residues in shrimp sample
B. SIDDA REDDY
Dept. of Chemistry, S. V. University, Tirupati-517 502, A.P. (India)
SUDHAKAR YADLAPALLI
First Source Laboratory Solutions LLP (Analytical), Hyderabad, T.S. (India)
Y. SUBBA RAO
DST-PURSE Centre, S. V. University, Tirupati- 517 502, A.P. (India)
P.R. PRASAD
Dept. of Chemistry, S. V. University, Tirupati-517 502, A.P. (India)
K. PRABHAKAR
Department of Chemistry, DKW Govt. Degree College, Nellore, A.P. (India)
N.Y. SREEDHAR
Dept. of Chemistry, S. V. University, Tirupati-517 502, A.P. (India)
Abstract :

A liquid chromatography–tandem mass spectrometry (LC/ESI/MS/MS) method was developed and validated for the determination of ten sulfonamide antibiotic residues in raw shrimp meat: sulfadimethoxine, sulfachloropyridizine, sulfamethoxypyridizine, sulfamethazine, sulfamethizole, sulfamerazine, sulfathiazole, sulfamethoxazole, sulfadiazine, sulfapyridine. The procedure involves the extraction of homogenized sample into acetonitrile and diluted with mobile phase. The analysis was carried out using ODS-EP 5 micron, 100×2.1mm column and mobile phase consists of 0.1% formic acid (A) and acetonitrile (B) in gradient mode at a flow rate of 0.5 mL/min. The final extracts were analyzed by the sensitive and selective LC/ESI/MS/MS operating in positiveion multiple reactions monitoring (MRM) mode.

Keyword : sulfonamides, shrimp, liquid chromatography-mass spectrometry, method development, method validation
Paper Download Count : 645
View Count : 524
Share
Facebook Twitter Google Plus LinkedIn Reddit
Article No. 6
Kinetics And Mechanistic Oxidation Of L-Cysteine Using By –Bromo Pthalimide In Presence Of Chloro – Complex Of Pd (II) As Homogenous Cataylst In Aqueous Aectic Acid Medium
JAISHREE G GAWAI
Jawaharlal Nehru Engineering College, N-6 Cidco, Aurangabad, (India)
MAZAHAR FAROOQUI
Dr. Rafiq Zakaria College for Women, Aurangabad, (India)
MILIND B UBALE
Vasantrao Naik College, Aurangabad, (India)
Abstract :

Spectrophotometric study of oxidation of Palladium(II) chloride catalyzed L- Cysteine in aqueous acetic acid medium has been studied. Present research work focus on effect of various parameters on oxidation of L- Cysteine. Parameters varies during the study of reaction is concentration of L- Cysteine, Palladium(II) chloride and effect of salts on oxidation phenomenon. As a conclusion oxidation reaction was found as first order reaction with respect to L- Cysteine, Palladium(II) chloride and Perchloric acid.

Keyword : Oxidation of L- Cysteine, NBP, Perchloric acid (HClO4), Mercuric Acetate, Palladium(II) chloride catalyzed, Acid medium oxidation, Kinetic study
Paper Download Count : 496
View Count : 499
Share
Facebook Twitter Google Plus LinkedIn Reddit
Ansari Education And Research Society
Facebook Google Plus Twitter
Website developed by