Role of copper species in chlorination and condensation reactions of acetylene

Article Abstract:

Copper chloride- and copper oxide-impregnated borosilicates have been found to be effective catalysts in acetylene condensation/chlorination reactions. Copper chloride borosilicates were found to be effective at temperatures above 150 degrees centigrade while copper oxide borosilicates were found effective only at temperatures higher than 300 degrees centigrade. Optimal temperatures for the two catalysts was pegged between 300 degrees centigrade and 400 degrees centigrade.

All Other Basic Inorganic Chemical Manufacturing, Waste Management and Remediation Services, Industrial Organic Chemicals, Cyclic Crude and Intermediate Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Hydrocarbon Pollutants NEC, Copper, Lead & Zinc Compounds, Acetylene for Chemical Use, Evaluation, Environmental aspects, Catalysts, Waste management, Hydrocarbon pollutants, Acetylene, Inorganic compounds, Copper compounds

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DDT metabolite bis(chlorophenyl)acetic acid: the neglected environmental contaminant

Article Abstract:

DDA (2,2-bis(chlorophenyl)acetic acid) resulting from the degradation of DDT (2,2-bis(chlorophenyl)-1,1,1-trichloroethane) residues has been neglected as an environmental contaminant of the aquatic system. DDA was found in the as amajor contaminant more than 25 years after DDT was banned from most developed countries in amounts up to 1 microgram per liter.

United States, Public affairs, Pesticide and Other Agricultural Chemical Manufacturing, Agricultural chemicals, not elsewhere classified, DDT, Pollution, Chemical industry, Pesticides industry

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