应用化学2026，Vol.43Issue(2)：208-216,中插13-中插18,15.DOI:10.19894/j.issn.1000-0518.250414
Ce修饰Beta分子筛的合成及其正十六烷催化裂化性能
Ce-Modified Beta Zeolite for Enhanced Catalytic Cracking of n-Hexadecane
摘要
Abstract
The catalytic cracking of heavy crude oil into high-value products over rare earth(RE)-modified zeolite is a potential strategy for improving the utilization efficiency of non-renewable petroleum resources.However,the influence of the speciation and distribution of rare earth elements on the catalytic properties of zeolites remains to be fully elucidated.In this work,we synthesized a highly efficient rare earth element Ce-modified Beta zeolite catalyst(Ce-Beta)for the catalytic cracking of n-hexadecane,which exhibits 88.6%n-hexadecane conversion with 82.5%yield of liquid products.Through multiple experimental studies,we revealed that the Ce species coexist in the form of internal Ce ions inside the zeolite micropores and external CeO2 clusters on the zeolite surface,both of which synergistically increase the acid concentration and strengthen the adsorption capacity for substrates and olefin intermediates,thus significantly enhancing the catalytic cracking activity of Ce-Beta.关键词
稀土分子筛/催化裂化/石油精炼/短链烃/原位拉曼Key words
Rare earth zeolite/Catalytic cracking/Petroleum refining/Short-chain hydrocarbons/In situ Raman分类
化学化工引用本文复制引用
蒋秀贤,王笑妹,徐晶,吴雪婷,汪啸,宋术岩,张洪杰,SHUTAVA Tatsiana..Ce修饰Beta分子筛的合成及其正十六烷催化裂化性能[J].应用化学,2026,43(2):208-216,中插13-中插18,15.基金项目
国家重点研发计划项目(No.2022YFB3504000)、吉林省科技发展计划项目(No.SLK202402015)、国家自然科学基金(Nos.U23A20140,22020102003,22025506,22271274)和吉林省科技发展计划项目(No.20240402056GH)资助 Supported by the Financial Aid from the National Science and Technology Major Project of China(No.2022YFB3504000),the Program of Science and Technology Development Plan of Jilin Province of China(No.SLK202402015),the National Natural Science Foundation of China(Nos.U23A20140,22020102003,22025506,22271274)and the Program of Science and Technology Development Plan of Jilin Province of China(No.20240402056GH) （No.2022YFB3504000）
