We obtain new results concerning poisoning/nonpoisoning in a catalytic model which has previously been introduced and studied. We show that poisoning can occur even when the arrival rate of one gas is smaller than the sum of the arrival rates of the other gases, and that poisoning does not occur when all gases have equal arrival rates.
"Some results for poisoning in a catalytic model." Electron. Commun. Probab. 11 168 - 177, 2006. https://doi.org/10.1214/ECP.v11-1211