CHROMIUM PLATING MIXTURE FOR USE

Brand Owner Address Description
ECONO-CHROME ATOTECH DEUTSCHLAND GMBH Erasmusstrasse 20 Berlin 10553 Germany Chromium Plating Mixture for Use in Metal Finishing;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. The method of preparing a chromium oxide catalyst for preparation of pentafluoroethane using a chloroethane compound includes heat treating chromium hydroxide powder at a temperature not higher than 300° C. to obtain chromium oxide powder, heat treating metal hydroxide, at a temperature not higher than 300° C. to obtain metal oxide powder, mixing 85~99.5 wt % of the chromium oxide powder with 0.5~15 wt % of the metal oxide powder to obtain a mixture, forming the mixture into a pellet, calcining the pellet at 200-300° C. using nitrogen gas, and fluorinating the pellet at 300-320° C. using a gas mixture including N2 and HF, and then at 320-380° C. using HF gas. The fluorination catalyst prepared using the method of this invention can be effectively used to prepare pentafluoroethane at a high yield using a chloroethane compound.