새글 논문 해외 국제전문학술지(SCI급) (공동) Catalytic Synergy between Lewis Acidic Alumina and Pt in Hydrodechlorination for Plastic Chemical Recycling
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2024-08
- 저자명 Jin Seok, Nhi Thi Yen Phan, Jeong-Chul Kim, Hyeyoung Shin*, Minkee Choi*
- 학술지명 Journal of the American Chemical Society
- 발행처명 American Chemical Society
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 5
- 원문 링크 https://pubs.acs.org/jacsat/article/146/34/23881/157855/Catalytic-Synergy-between-Lewis-Acidic-Alumina-and
홈페이지논문 초록 (Abstract)
Pyrolysis-basedplasticchemicalrecyclinghasgained significant industrial attentiondue to itsadvantageof eliminating complex plastic sorting processes.However, plastic pyrolysis oil containsvariouscomponentsthatrequirestringentremovalbefore subsequentprocesses.Inparticular,Clcompoundsoriginatingfrom the decomposition of poly(vinyl chloride) can cause serious corrosion of reactors and catalyst deactivation in downstream processes.While extensive researchhas been conductedon the removal of other heteroatoms (S, N, and O) from organic compounds viahydrotreating, studiesonthe removal ofCl have beenscarce. Inthisstudy,hydrodechlorinationoverPtcatalystson various supports is comprehensively investigated using 1,2dichloroethaneas amodel reactant.Our resultsdemonstrate thatPtonγ-Al2O3 canexhibit exceptionallyhighcatalyticactivity compared to thoseonother supports due toadistinct bifunctionalmechanism. Rigorous studies reveal that theLewis acidic pentacoordinatedAl sitesofγ-Al2O3activateC−Clbonds,whereasPtactivatesH2andprovidesspilloverHtoremoveClasHCl. ThebifunctionalmechanismenablestheminimizeduseofpreciousPt(<0.1wt%)toachievehighactivity.Pt/γ-Al2O3alsoallows forefficientCl removal (96.8%)withhighstabilityintreatingwasteplasticpyrolysisoil containing7500ppmofCl.