Tuning of Higher Alcohol Selectivity and Productivity in CO Hydrogenation Reactions Over K/MoS2 Catalysts Supported on Mesoporous Activated Carbon and mixed MgAl Oxide

摘要

The use of supports as a means of enhancing both activity and selectivity of MoS2 has been investigated over the past four decades. Our previous work showed that carbon supports yield high methanol and ethanol productivities.1 Mesoporous activated carbon, obtained via collaboration with ORNL, when used as a support, is confirmed to show greater alcohol productivity than commercial activated carbon. Hydrotalcite-derived mixed MgAl oxide (MMO) supports yield high C3+OH selectivity influenced by Mo- MMO interaction, but generally yield low productivity. It has been shown that the Mo:MMO ratio greatly affects selectivity while catalyst preparation methods do not.2 In this work, we seek to evaluate the hypotheses that molybdenum supported on a family of MMO and carbon mixed-supports may allow tuning of higher alcohol productivity (due to carbon support) and selectivity (due to MMO support).