Preparation of a Highly Efficient Carbon-Supported Ruthenium Catalyst by Carbon Monoxide Treatment

A carbon-supported ruthenium catalyst with barium promoter was prepared by carbon monoxide treatment and its application as a catalyst in ammonia synthesis. CO treatment of Ru catalyst supported on carbon led to the formation of carbon and the increase of the number of anhydride, ester, and hydroxyl groups along with the decrease of the amount of quinone. Ru catalyst with CO treatment showed excellent catalytic activities and thermal stability with respect to the catalyst without treatment because the formation of carbon during CO treatment would not only help to remove the superfluous hydrogen atoms by carbon gasification but also weaken the adsorption strength of hydrogen and nitrogen.

通过一氧化碳处理制备了一种含钡助剂的碳载钌催化剂，并将其应用于氨合成反应。对碳载钌催化剂进行一氧化碳处理导致碳的形成，酸酐、酯和羟基数量增加，同时醌的数量减少。经过一氧化碳处理的钌催化剂相较于未处理的催化剂表现出优异的催化活性和热稳定性，因为一氧化碳处理过程中碳的形成不仅有助于通过碳的气化去除多余的氢原子，还会减弱氢和氮的吸附强度。