Abstract
This chapter discusses the selective ring opening (SRO) of naphthenic molecules. SRO requires that only one C–C bond internal to each naphthene ring is broken, thereby preventing molecular weight reduction. Alkylcylopentanes (RC5) SRO can be readily achieved by hydrogenolysis on noble metal catalysts. Under similar conditions, alkylcyclohexanes (RC6) SRO is very slow and requires the addition of a controlled isomerization––that is, a non-branching ring contraction. Nonbranching ring contraction can be achieved using mesoporous crystalline materials, such as high silicon/aluminum (Si/Al) ratio faujasitic zeolites. The high-activity hydrogenolysis catalysts, such as iridium (Ir), coupled with a mesoporous high Si/Al faujasite, such as ECR-32 outperforms conventional bifunctional catalysts for the selective conversion of naphthenes to acyclic paraffins.
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.
