Abstract
From waste to single-wall carbon nanotubes and silica nanowires: the first high-tech outlet for FC3R.
Highlights
Petroleum re ning relies on cracking of large gasoil molecules into smaller vapour-phase distillable products
We show that pulsed laser ablation of raw FC3R produces simultaneous deposition of single-wall carbon nanotubes and silica nanowires through vapour/solid– liquid–solid self-assembly in distinct zones of an oven-laser apparatus
The petroleum coke (PC) is periodically burned off to maintain activity in a regenerator, the produced heat is refed into the system (FCC C–C cleaving is endothermic) and the catalyst is recirculated for further catalysis
Summary
Petroleum coke (PC) accumulates on different locations and components of the FCC unit (conduits, chambers, chimneys). To a lesser extent, inverted (silica core) and side-by-side (half wire) nanowires were found at undisclosed locations in the sample.[86,87] In CNT synthesis, zeolites can provide catalytic decomposition,[88] catalyst support[89] and structural templates.[90] the thinnest freestanding SWCNTs (0.4 nm) were grown inside the channels of AFI zeolite (AlPO45À).[90] Given these existing synergies, the intention of this study is to provide a proof of concept for the feasibility of CNT and SiONW synthesis from FC3R by PLD, including intermittent parallels to cracking catalyst waste in general. Feasibility and proof are provided by a thorough morphological and chemical characterisation of the precursor (FC3R in 3.1) and resulting nanostructures (SiONWs in 3.2; SWCNTs in 3.3), supported by a combination of electron microscopy, micromilling and spectroscopic techniques
Sign-in/Register to view highlights & summary 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.
