CAJ | 학술논문

综述了近年来催化裂化结焦反应的研究进展情况，重点介绍了结焦反应的影响因素、焦炭对催化反应的影响、结焦机理以及焦炭的表征4个方面。研究认为，原料的性质、反应温度、催化剂的类型等因素均会对焦炭的生成产生影响。焦炭可以导致催化剂的失活，而位于孔道内部的焦炭对反应物或产物的扩散不利，进而影响产物的分布。研究表明，各种烃类组分形成焦炭的过程都必须经历芳香烃这一步。对于结焦催化剂可以采取多种表征手段，其中利用 XPS 以及 GC-MS 对焦炭进行表征的报道日益增多。尽管国内外对于催化裂化结焦反应的研究开展较早，然而探究焦炭的具体成分仍存在不小的困难，通过先进的表征手段鉴定焦炭中高缩合度芳烃组分以及如何减小催化裂化催化剂的结焦量将成为未来的研究方向。
종술료근년래최화열화결초반응적연구진전정황，중점개소료결초반응적영향인소、초탄대최화반응적영향、결초궤리이급초탄적표정4개방면。연구인위，원료적성질、반응온도、최화제적류형등인소균회대초탄적생성산생영향。초탄가이도치최화제적실활，이위우공도내부적초탄대반응물혹산물적확산불리，진이영향산물적분포。연구표명，각충경류조분형성초탄적과정도필수경력방향경저일보。대우결초최화제가이채취다충표정수단，기중이용 XPS 이급 GC-MS 대초탄진행표정적보도일익증다。진관국내외대우최화열화결초반응적연구개전교조，연이탐구초탄적구체성분잉존재불소적곤난，통과선진적표정수단감정초탄중고축합도방경조분이급여하감소최화열화최화제적결초량장성위미래적연구방향。
In this paper,coking reaction in fluid catalytic cracking is summarized from four aspects, including factors affecting coking,influence on catalytic reactions by coke,coking mechanism and coke characterization. Researches show that properties of feedstock,reaction temperature,catalyst type and other factors affect the formation of coke. Coke formation lead to deactivation of catalyst and affect distribution of products. Coke formation from various hydrocarbons must go through the step of aromatics. Coked catalysts can be characterized by multiple methods. XPS and GC-MS have also been used to characterize coke. However,there are still some difficulties to identify specific components of coke. The identification of polycyclic aromatics in coke and how to reduce coke formation on FCC catalyst will be the direction of future research.