应用化学 ›› 2026, Vol. 43 ›› Issue (2): 208-216.DOI: 10.19894/j.issn.1000-0518.250414

• 研究论文 • 上一篇    下一篇

Ce修饰Beta分子筛的合成及其正十六烷催化裂化性能

蒋秀贤1,2, 王笑妹1,2, 徐晶1, 吴雪婷1,3(), 汪啸1,2(), 宋术岩1,2(), 张洪杰1,2,4, SHUTAVA Tatsiana1,5   

  1. 1.中国科学院长春应用化学研究所,中国-白俄罗斯先进材料与制造“一带一路”联合实验室,长春 130022
    2.中国科学技术大学应用化学与工程学院,合肥 230026
    3.长春理工大学化学与环境工程学院,长春 130022
    4.清华大学化学系,北京 100084
    5.白俄罗斯国家科学院新材料化学研究所,明斯克 220084,白俄罗斯
  • 收稿日期:2025-10-30 接受日期:2025-12-24 出版日期:2026-02-01 发布日期:2026-03-06
  • 通讯作者: 吴雪婷,汪啸,宋术岩
  • 基金资助:
    国家重点研发计划项目(2022YFB3504000);吉林省科技发展计划项目(SLK202402015);国家自然科学基金(U23A20140);国家自然科学基金(22020102003);国家自然科学基金(22025506);国家自然科学基金(22271274);吉林省科技发展计划项目(20240402056GH)

Ce-Modified Beta Zeolite for Enhanced Catalytic Cracking of n-Hexadecane

Xiu-Xian JIANG1,2, Xiao-Mei WANG1,2, Jing XU1, Xue-Ting WU1,3(), Xiao WANG1,2(), Shu-Yan SONG1,2(), Hong-Jie ZHANG1,2,4, Tatsiana SHUTAVA1,5   

  1. 1.China-Belarus Belt and Road Joint Laboratory on Advanced Materials and Manufacturing,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    2.School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026,China
    3.School of Chemistry & Environmental Engineering,Changchun University of Science and Technology,Changchun 130022,China
    4.Department of Chemistry,Tsinghua University,Beijing 100084,China
    5.Institute of Chemistry of New Materials,National Academy of Sciences of Belarus,Minsk 220084,Belarus
  • Received:2025-10-30 Accepted:2025-12-24 Published:2026-02-01 Online:2026-03-06
  • Contact: Xue-Ting WU,Xiao WANG,Shu-Yan SONG
  • About author:songsy@ciac.ac.cn
    wangxiao@ciac.ac.cn
    wuxt403@ciac.ac.cn
  • Supported by:
    the Financial Aid from the National Science and Technology Major Project of China(2022YFB3504000);the Program of Science and Technology Development Plan of Jilin Province of China(SLK202402015);the National Natural Science Foundation of China(U23A20140);the Program of Science and Technology Development Plan of Jilin Province of China(20240402056GH)

摘要:

在全球化石能源面临枯竭的背景下,提高石油资源的利用率是应对能源供给压力、实现资源价值最大化的关键路径。稀土改性分子筛在催化裂化重质原油转化为高价值产品中已展现出良好的应用前景,然而稀土元素的形态和分布对分子筛催化性能的影响仍有待充分阐明。 基于此,对稀土元素Ce改性Beta分子筛催化剂进行了催化裂化性能的研究,相比于不含Ce物种的P-Beta和仅含CeO2物种的CeO2-Beta,Ce-Beta表现出最优的正十六烷催化裂化性能,在280 ℃、1 h内,能够实现88.6%的正十六烷转化率和82.5%的液态产物收率,其中,液态产物主要是由以C8为中心的短链烃和极少量的偶联产物(~5%)组成。 此外,通过多种构-效实验表明Ce物种是以Beta分子筛微孔内部的Ce离子和分子筛表面的外部CeO2簇的形式共存的,二者协同作用增加了酸浓度的同时,增强了对底物分子和烯烃中间体的吸附能力,从而显著提高了Ce-Beta的催化裂化活性。

关键词: 稀土分子筛, 催化裂化, 石油精炼, 短链烃, 原位拉曼

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.

Key words: Rare earth zeolite, Catalytic cracking, Petroleum refining, Short-chain hydrocarbons, In situ Raman

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