| 摘要 |
<p>A process for producing chlorine by oxidizing hydrochloric acid with molecular oxygen, which comprises using a crystalline chromium catalyst prepared by providing a relatively large quantity of chromium oxide on a silicon oxide carrier with a specified porosity and heat-treating it at 450 to 700°C, preferably 490°C or above. This process enables the catalyst activity to be kept on high level for a long time under the conditions of a high space velocity of a starting gas and a high feeding rate with no additives as is different from the prior art.</p> |
