アルミナ担持ロジウム系触媒によるメタノールの分解反応

抄録

The decomposition of methanol was investigated over a variety of alumina (Al₂O₃) supported rhodium (Rh) catalysts. Decomposition as well as dehydration took place in the reaction of methanol over Rh/Al₂O₃ catalyst. Pyridine adsorption during the reaction revealed that Rh was active sites for the decomposition, and Al₂O₃ was those for the dehydration.
When base metals were added to Rh/Al₂O₃, the selectivity for the decomposition increased with lowering electronegativity of metal ions added. Thus, alkali metals such as potassium (K) gave the highest selectivity for the decomposition. Further addition of some base metals to Rh-K/Al₂O₃ selectively promoted the decomposition of methanol.