A research group at Hokkaido University has succeeded in developing a new catalyst that achieves propylene production by propane oxidative dehydrogenation with the highest performance in the world.
The "dehydrogenation reaction", which can produce propylene, which is the basic raw material for various chemical products, from inexpensive propane derived from shale gas, is under high temperature conditions in the current industrial process, while the demand for propylene is increasing worldwide. (600 ° C or higher) is required, and significant deterioration of the catalyst due to carbon precipitation is a problem.As a method for preventing carbon precipitation, there is "propane oxidative dehydrogenation" in which the deposited carbon is removed by adding COXNUMX as an oxidizing agent to propane dehydrogenation, but an effective catalyst at a practical level has not been developed.
So far, this research group has found that platinum is suitable for activating propane, cobalt is suitable for activating COXNUMX, and indium is suitable for suppressing side reactions (suppressing carbon precipitation).Furthermore, since cerium oxide that promotes carbon combustion is suitable for removing precipitated carbon, we decided to combine all of them and designed a new catalyst in which platinum-cobalt-indium alloy nanoparticles were supported on cerium oxide.・ Synthesized.
When this was applied to propane oxidative dehydrogenation with CO5, it showed extremely high catalytic activity, which was five times the conventional highest value, and exhibited the world's highest selectivity and durability.In addition, because the ability to activate COXNUMX is extremely high, the efficiency of COXNUMX utilization is also the highest in the world.On the other hand, the manufacturing cost is not so different from that of the conventional catalyst because it can be prepared by a conventional simple method.
This result has the potential to lead to the construction of a new propane dehydrogenation industrial process that achieves propylene production and effective use of COXNUMX simultaneously and with high efficiency, and is expected to contribute to technological innovation toward the realization of carbon neutrality. Will be done.
Paper information:[Nature Catalysis] Platinum –cobalt–indium nanoalloy on ceria as a highly efficient catalyst for the oxidative dehydrogenation of propane using CO₂
