نتایج جستجو برای: parachlorophenol

تعداد نتایج: 139  

2003
ALAN H. MEHLER

1. HAGELBERG, L., Ber. de&. hem. Ges., 23,1083 (1890). 2. KATJFMANN. H. P.. GINDSBERG. E.. ROTTIG, W.. AND SALCHOW, R., Ber. $eut. chkm. Ges., 70, 2519 (1937). ’ ’ 3. SIEGEL, J. R., AND ROSENBLATT, D. H., J. Am. Chem. Sot., 80, 1753 (1958). 4. GABRIEL, S., Ber. deut. them. Ges., 22, 1139 (1889). 5. FIESER, i. I?., Experiments in organic chemistry, Ed. 2, D. C. Heath and Co., New York, 1941, p. ...

2017
Ghulam Hussain Nasir Abass Ghulam Shabir Makshoof Athar Aamer Saeed Rashid Saleem Farman Ali Misbahul Ain Khan

The present investigation deals with synthesis of new acid dyes from 4-amino-1-(4-sulfophenyl)-3-methyl-5-pyrazolone and phenol derivatives and their metal complexes (Cu (II) and Fe (II)). The phenol derivatives include 4-chlorophenol, 4-nitrophenol, 4-hydroxybenzene sulfonic acid, 2-nitrophenol-4-sulfonic acid, resorcinol and bisphenol A and bisphenol S. The newly synthesized dyes were applied...

Journal: :Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2012
Andrea Bedini Valter Maurino Claudio Minero Davide Vione

Light-induced nitration pathways of phenols are important processes for the transformation of pesticide-derived secondary pollutants into toxic derivatives in surface waters and for the formation of phytotoxic compounds in the atmosphere. Moreover, phenols can be used as ˙NO(2) probes in irradiated aqueous solutions. This paper shows that the nitration of 4-chlorophenol (4CP) into 2-nitro-4-chl...

1999
Xiaojing Li Jerry W. Cubbage William S. Jenks

The TiO2-mediated photocatalytic degradation of 4-chlorocatechol is studied as a branch of the degradation of 4-chlorophenol. In addition to some basic kinetic studies, the identities of many of the cyclic and acyclic intermediates, verified in most cases with authentic samples, are reported. From 4-chlorocatechol, the major product is hydroxylation to form 5-chloro-1,2,4-benzenetriol. A small ...

Journal: :Chemosphere 2006
Essam Tamer Zilouei Hamid Amin Magdy Aly El Tayeb Ossama Mattiasson Bo Guieysse Benoit

The sequential UV-biological degradation of a mixture of 4-chlorophenol (CP), 2,4-dichlorophenol (DCP), 2,4,6-trichlorophenol (TCP), and pentachlorophenol (PCP) was first tested with each pollutant supplied at an initial concentration of 50 mg l(-1). Under these conditions, the chlorophenols were photodegraded in the following order of removal rate: PCP>TCP>DCP>CP with only CP and DCP remaining...

Journal: :ACS applied materials & interfaces 2012
Mingshan Zhu Penglei Chen Wanhong Ma Bin Lei Minghua Liu

In this paper, we report that cube-like Ag/AgCl nanostructures could be facilely fabricated in a one-pot manner through a direct-precipitation protocol under ambient conditions, wherein no additional issues such as external energy (e.g., high temperature or high pressure), surfactants, or reducing agents are required. In terms of using sodium chloride (NaCl) as chlorine source and silver acetat...

2013
JAGTAR SINGH ATIN SHARMA

Covalent immobilization of peroxidase is convenient in continuous processes to improve them economically. In the present study, peroxidases from Sapindus mukorossi were immobilized and used for removal of 4-chlorophenol (4-CP) by the polymerization pathway. Five milligram of vacuum dried polyaniline-glutaraldehyde composite was incubated in 1ml sodium acetate buffer (50mM;pH 5.0) containing 0.5...

Journal: :Chemosphere 2003
Hsu-Hui Huang Ming-Chun Lu Jong-Nan Chen Cheng-Te Lee

The objective of this research was to examine the heterogeneous catalytic decomposition of H(2)O(2) and 4-chlorophenol (4-CP) in the presence of activated carbons modified with chemical pretreatments. The decomposition of H(2)O(2) was suppressed significantly by the change of surface properties including the decreased pH(pzc) modified with oxidizing agent and the reduced active sites occupied b...

Journal: :The Biochemical journal 1971
W C Evans B S Smith P Moss H N Fernley

1. A pseudomonad capable of utilizing 4-chlorophenoxyacetate (CPA) as sole source of organic carbon was isolated from soil. 2. The organism was grown in liquid culture and the following compounds were isolated and identified in culture extracts: 4-chloro-2-hydroxyphenoxyacetate, 4-chlorocatechol, beta-chloromuconate probably the cis-trans isomer and gamma-carboxymethylene-Delta(alphabeta)-buten...

1998

The combination of sonolysis and ozonolysis as an advanced oxidation process was investigated to gain insight into factors affecting enhancement of the combined system. Sonolysis, ozonolysis, and a combination of the two were used to facilitate the degradation of three known organic contaminants, nitrobenzene (NB), 4-nitrophenol (4NP), and 4-chlorophenol (4-CP), in water. Experiments were perfo...

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