Results 191 to 200 of about 5,079,735 (244)

Pd-Cu catalysts supported on anion exchange resin for the simultaneous catalytic reduction of nitrate ions and reductive dehalogenation of organochlorinated pollutants from water

Applied Catalysis A: General, 2019
The present work proposes the simultaneous removal of these classes of pollutants by a catalytic hydrotreatment processes. For this purpose, bimetallic Pd-Cu catalysts (with mass ratio Pd:Cu of 4:1) supported on macroporous strong base anion resin were ...
C. Bradu, C. Căpăţ, F. Papa, L. Frunza, Elena-Alina Olaru, G. Crini, N. Morin-Crini, É. Euvrard, I. Balint, I. Zgura, C. Munteanu   +10 more
semanticscholar   +1 more source

Trichloroacetic acid dehalogenation by reductive radicals

Inorganica Chimica Acta, 2007
Abstract Advanced oxidation processes, using either UVC/H2O2 or UVC/K2S2O8, both in the presence of H2CO2 or CH3OH are very efficient in mineralizing aqueous solutions of trichloroacetic acid (TCAA) leaving no toxic residues. The main reaction initiating TCAA depletion is its reduction by the radicals CO 2 - or CH2OH to ...
Pedro David Gara, Ethel Bucharsky, Michael Wörner, André M. Braun, Daniel O. Mártire, Mónica C. Gonzalez   +5 more
openaire   +1 more source

Catalytic reductive dehalogenation of thiophene derivatives

Chemistry of Heterocyclic Compounds, 1982
A method for the preparation of 3-substituted derivatives of thiophene by reductive dehalogenation of 2,5-dihalo-substituted thiophenes in the presence of a palladium complex is proposed. The dehalogenation reaction is a stepwise process. The presence of an acyl group in the 3 position increases the rate of the process.
V. Z. Sharf, S. Z. Taits, A. S. Gurovets, Yu. B. Vol'kenshtein, B. P. Fabrichnyi, S. I. Shcherbakova   +5 more
openaire   +1 more source

Reductive Dehalogenation of Chlorinated Methanes by Iron Metal

Environmental Science & Technology, 1994
Reduction of chlorinated solvents by fine-grained iron metal was studied in well-mixed anaerobic batch systems in order to help assess the utility of this reaction in remediation of contaminated groundwater.
L J, Matheson, P G, Tratnyek
openaire   +3 more sources

Reductive catalytic dehalogenation of light chlorocarbons

Applied Catalysis B: Environmental, 1999
Abstract Several palladium and platinum supported catalysts have been employed in the gas-phase dehalogenation of chloromethanes (CCl4, CHCl3 and CH2Cl2) and chlorobenzene by using molecular hydrogen under mild conditions. A new porous glass material (Vycor) has been found to be a promising carrier for platinum in the selective hydrogenation of CCl4
L. Prati, M. Rossi
openaire   +2 more sources

Reductive dehalogenation of 3,5-dibromo-4-hydroxybenzoate by an aerobic strain of Delftia sp. EOB-17

Biotechnology Letters, 2015
Kai Chen, Jian-Dong Jiang
exaly   +2 more sources

Reductive dehalogenation: A subsurface bioremediation process

Remediation Journal, 1990
AbstractIntroduction and large‐scale production of synthetic halogenated organic chemicals over the last fifty years has resulted in a group of contaminants that tend to persist in the environment and resist both biotic and abiotic degradation. The low solubility of these types of contaminants, along with their toxicity and tendency to accumulate in ...
Judith L. Sims, Joseph M. Suflita, Hugh H. Russell   +2 more
openaire   +1 more source

Reductive dehalogenation of halophenols in sulfite–bisulfate medium

Tetrahedron Letters, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Subbarayappa Adimurthy, Gadde Ramachandraiah   +1 more
openaire   +1 more source

Electrochemical reductive dechlorination of chlorinated volatile organic compounds (Cl-VOCs): Effects of molecular structure on the dehalogenation reactivity and mechanisms

Chemical Engineering Journal, 2019
Chlorinated volatile organic compounds (Cl-VOCs) are a group of common contaminants that are widely detected in various polluted media (e.g., water, soil and atmospheric environment).
Chao Lei, Fengyi Liang, Jing Li, Wenqian Chen, Binbin Huang   +4 more
semanticscholar   +1 more source

Reductive dehalogenation of 2-iodobenzothiazole with alkanethiols

Journal of the Chemical Society, Perkin Transactions 2, 1976
The reactions of 2-iodobenzothiazole with alkanethiols in methanol afford the unsubstituted benzothiazole as previously found for reactions with thiophenols. The reaction is autocatalytic, the hydroiodic acid produced being responsible for this phenomenon. A mechanism for the reaction is suggested.
Giuseppe Bartoli, Leonardo Di Nunno, Saverio Florio, Michele Fiorentino, Paolo E. Todesco   +4 more
openaire   +1 more source