Accession Number : ADA299579

Title :   Development of a Glass Reactor Lining for Chlorocarbon-Supercritical Water Reactions.

Descriptive Note : Final rept. 15 Mar 94-14 Jun 95,

Corporate Author : WESTERN MICHIGAN UNIV KALAMAZOO

Personal Author(s) : Houser, Thomas

PDF Url : ADA299579

Report Date : 09 AUG 1995

Pagination or Media Count : 8

Abstract : The current study has examined the influence of supercritical water (SW) on reactions of organic chlorides. The aliphatic compounds were represented by 1-chloro-3-phenylpropane which reacted rapidly and completely by both pyrolysis and with SW. The presence of SW produced only a minor shift in organic products. SW did promote the reaction between the metal walls and the chloride, or HCl formed from it, to quantitatively produce metal chlorides, as confirmed by ICP analysis; after dry pyrolysis some HCl, still remained. However, SW did significantly increase the rate of consumption of the aromatic chloride, 2-chlorotoluene, over that of dry pyrolysis; metal chlorides were evident in the water layer and HCl was not detected in the SW reaction. Because the reaction of organic chlorides, and/or the HCl formed from them, with the reactor walls may influence the rates and product distributions, experiments were begun using Vycor inserts to provide a more inert surface. Pyrex was not inert to SW. The results of these experiments, plus those with added NiCl2 or FeCl2 solutions in the Vycor insert, showed conclusively that both the metal wall and the metal salts had a catalytic effect in the reaction. Similar catalysis by the reactor wall was observed for the SW - 4-chlorophenol reaction. These results indicate that organic chlorides can produce a corrosion problem at SW conditions of the metal components of flow systems and with oxide supported catalyst beds.

Descriptors :   *WATER, *GLASS, *REACTOR SYSTEM COMPONENTS, *SUPERCRITICAL FLOW, METALS, CORROSION, DISTRIBUTION, LAYERS, RATES, ALIPHATIC COMPOUNDS, CARBON, MOISTURE CONTENT, IRON, RESPONSE, CHEMICAL REACTIONS, ORGANIC MATERIALS, LOW LEVEL, CHLORIDES, ORGANIC COMPOUNDS, WALLS, CATALYSIS, NICKEL, CONSUMPTION, AROMATIC COMPOUNDS, FLOW, NUCLEAR REACTORS, SALTS, PHENYL RADICALS, PYROLYSIS, CHLORINE, PROPANE, TOLUENES, HEAT RESISTANT GLASS.

Subject Categories : Organic Chemistry
      Physical Chemistry
      Radiation and Nuclear Chemistry
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE