Diffusion and catalyst efficiency in hierarchical zeolite catalysts

查看全文 作　　者：Peng [1,2]Peng;Xiong-Hou [3]Gao;Zi-Feng [1]Yan;Svetlana [1]Mintova

机构地区：[1]State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Qingdao 266580.China;[2]Laboralory of Catalysis and Spectrochemistry(LCS),Noirnandy University,National Graduate School of Engineering of Caen(ENSICAEN),Univeisity of Caen(UNICAEN),Frencti National Center for Scientific Research(CNRS),Caen 14000,France;[3]Petfochemiral Research Institute,China National Petroleum Company,Beijing 100195,China

出　　处：《National Science Review》索引2020年第7卷第11期,共17页

基　　金：This work was supported by the K.C.Wong Education Foundation,the Sino-French International Laboratory(LLA)‘Zeolites’,the Thousand Talents Program for Foreign Experts(WQ20152100284);the Key Projects of China National Key R&D Plan(2018YFE0118200);the Key Projects of Shandong Provincial Key R&D Plan(2019JZZY010506);the Major Projects of PetroChina on Catalysts of Oil Processing(2016E-0707). 摘　　要：The preparation of hierarchical zeolites with reduced diffusion limitation and enhanced catalyst efficiency has become a vital focus in the field of zeolites and porous materials chemistry within the past decades.This review will focus on the diffusion and catalyst efficiency of hierarchical zeolites and industrial catalysts.The benefits of diffusion and catalyst efficiency at two levels of hierarchies(zeolitic component level and industrial catalyst level)from a chemical reaction engineering point of view will be analysed.At zeolitic component level,three types of mesopores based on the strategies applied toward enhancing the catalyst effectiveness factor are presented:(i)‘functional mesopores’(raising effective difllisivity);(ii)‘auxiliary mesopores’(decreasing diffusion length);and(iii)integrated mesopores1(a combination thereof).At industrial catalyst level,location and interconnectivity among the constitutive components are revealed.The hierarchical pore interconnectivity in multi-component zeolite based industrial catalysts is exemplified by fluid catalytic cracking and bi-functional hydroisomerization catalysts.The rational design of industrial zeolite catalysts at both hierarchical zeolitic component and catalyst body levels can be fully comprehended using the advanced in situ and/or operando spectroscopic,microscopic and diffraction techniques. 关键词：DIFFUSION effectiveness factor pore connectivity hierarchical zeolite industrial catalyst advanced characterization

相关文献

参考文献（127）
引证文献（12）
耦合文献（49）

参考文献(127)

引证文献(12)

耦合文献(49)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Diffusion and catalyst efficiency in hierarchical zeolite catalysts

参考文献(127)

引证文献(12)

耦合文献(49)

用户提示