Patent ID: 8884037
Filing Date: 2014-11-11
Classification: C07D

Abstract:
1. A method for reducing the value of an alkylene oxide production parameter in a process for making the alkylene oxide by reacting a feed gas comprising an alkylene, oxygen, and at least one organic chloride over a high-efficiency silver catalyst, the method comprising the steps of: operating the process at a first reaction temperature, a first overall catalyst chloriding effectiveness value, and a first concentration of oxygen in the feed gas to yield a first value of the alkylene oxide production parameter; selecting a target value of the alkylene oxide production parameter, wherein the target value of the alkylene oxide production parameter is less than the first value of the alkylene oxide production parameter; and adjusting at least one process parameter such that the alkylene oxide production parameter decreases, wherein the step of adjusting at least one process parameter comprises first decreasing the concentration of oxygen in the feed gas.