Abstract
Commercial propane dehydrogenation (PDH) catalyst of CrOx/Al2O3 are generally faced with the challenge of rapid deactivation because of severe coke accumulation, which requires frequent regeneration and causes massive emission of undesired CO2. In this work, the effect of Sn promotion on the substantial improvement of catalytic durability over the CrOx/Al2O3 during the PDH was investigated. The superior role of Sn modification is mainly based on the following features and proposed by the designed ex-situ and in-situ experiments. Firstly, electronic effects from Sn addition weaken interaction between Cr and the Al2O3 support, which is beneficial for the advantageous migration of active Cr sites during the PDH reaction. Moreover, effective regulation of catalyst surface species and acidic properties avoids the subsequent side reactions to generate coke precursors. This work provides novel inspiration for the development of the commercial CrOx/Al2O3 catalyst for PDH process.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
