Influence of carbonization temperature on cobalt-based nitrogen-doped carbon nanopolyhedra derived from ZIF-67 for nonoxidative propane dehydrogenation

Propylene is a significant basic material for petrochemicals such as polypropylene, propylene oxide, etc. With abundant propane supply from shale gas, propane dehydrogenation (PDH) becomes extensively attractive as an on-purpose propylene production route in recent years. Nitrogen-doped carbon (NC) nanopolyhedra supported cobalt catalysts were synthesized in one-step of ZIF-67 pyrolysis and inves-tigated further in PDH. XPS, TEM and N2 adsorption-desorption were used to study the influence of carbonization temperature on as-prepared NC supported cobalt catalysts. The temperature is found to affect the cobalt phase and nitrogen species of the catalysts. And the positive correlation was established between Co0 proportion and space time yield of propylene, indicating that the modulation of carbon-ization temperature could be important for catalytic performance. (c) 2022 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/ 4.0/).

Automated summary

Propylene has become an important raw material for petrochemical products. This study investigates the influence of carbonization temperature on the performance of cobalt catalysts supported by nitrogen-doped carbon nanopolyhedra for propane dehydrogenation.