Effect of Poisoning by Oxygen and Carbon Monoxide

In four successive injections, the relative rate of hydrogenation fell to 0.20, 0.11, 0.07, and 0.04 with oxygen and to 0.56, 0.37, 0.33, and 0.30 with carbon monoxide. A sample of 1 ml of poison corresponds to 290 /xmoles per gram of CrgOs, or 0.62 molecules/lOO of chromia. 

The initial ratio, mw -2-hexene/cis-2-hexene, fell from its initial value of about 2 to about 0.6-0.7 after injection of the first slug of poison and changed little thereafter. 

---