Hexane Cracking: Improving Ethylene Yield and Zeolite Stability by Hydrothermal Urea Modification of HZSM-5

被引:0
作者
Chen, Zikang [1 ]
Liu, Qi [1 ]
Xiao, Peng [1 ]
Li, Zhangming [1 ]
Gong, Yanjun [1 ]
机构
[1] China Univ Petr, Coll Chem Engn & Environm, State Key Lab Heavy Oil Proc, Key Lab Catalysis CNPC, Beijing 102249, Peoples R China
基金
中国国家自然科学基金;
关键词
HIERARCHICAL ZSM-5 ZEOLITES; CATALYTIC CRACKING; H-ZSM-5; ZEOLITE; LIGHT OLEFINS; ACID SITES; HYDROCARBONS; PERFORMANCE; METHANOL; CONVERSION; ISOMERIZATION;
D O I
10.1021/acs.energyfuels.5c00934
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Finely regulating the acidity and pore structure of zeolites has a great influence on performance in the cracking hydrocarbon reaction. In this work, HZSM-5 zeolites were modified with a urea solution under hydrothermal conditions. As a comparison, modification with TPAOH and NaOH solutions was respectively used to investigate the different effects on the desilication, generation of hierarchical pores, and acidity of zeolites. After modification, ZSM-5 zeolites can improve the yield of ethylene and the reaction stability in the reaction of the cracking of hexane. Distinctly, hydrothermal urea treatment of the ZSM-5 zeolite modulates the distribution of Al, significantly improves its acid properties and pore structure, as well as heals the defective sites in the zeolite. For the urea treated sample, in the reaction of the cracking of hexane, the conversion, light olefin yield, and ethylene yield increased by 2.8%, 5.1%, and 13.4% compared with those of the HZSM-5 zeolite, respectively. Moreover, the urea treated sample has reduced coke deposition and a lifetime of 107 h, more than three times that of the HZSM-5 zeolite (29 h).
引用
收藏
页码:11843 / 11854
页数:12
相关论文
共 56 条
[31]   Catalytic cracking of hydrocarbons over modified ZSM-5 zeolites to produce light olefins: A review [J].
Rahimi, Nazi ;
Karimzadeh, Ramin .
APPLIED CATALYSIS A-GENERAL, 2011, 398 (1-2) :1-17
[33]   The effect of Fe, P and Si/Al molar ratio on stability of HZSM-5 catalyst in naphtha thermal-catalytic cracking to light olefins [J].
Sendesi, Seyedeh Mahboobeh Teimouri ;
Towfighi, Jafar ;
Keyvanloo, Kamyar .
CATALYSIS COMMUNICATIONS, 2012, 27 :114-118
[34]   Catalytic cracking of polycyclic aromatic hydrocarbons with hydrogen transfer reaction [J].
Shimada, Iori ;
Takizawa, Kouhei ;
Fukunaga, Hiroshi ;
Takahashi, Nobuhide ;
Takatsuka, Toru .
FUEL, 2015, 161 :207-214
[35]   Ethylene production via photocatalytic dehydrogenation of ethane using LaMn1-xCuxO3 [J].
Song, Rui ;
Zhao, Guanshu ;
Restrepo-Florez, Juan Manuel ;
Perez, Camilo J. Viasus ;
Chen, Zhijie ;
Ai, Chaoqian ;
Wang, Andrew ;
Jing, Dengwei ;
Tountas, Athanasios A. ;
Guo, Jiuli ;
Mao, Chengliang ;
Li, Chaoran ;
Shen, Jiahui ;
Cai, Guangming ;
Qiu, Chenyue ;
Ye, Jessica ;
Fu, Yubin ;
Maravelias, Chistos T. ;
Wang, Lu ;
Sun, Junchuan ;
Xu, Yang-Fan ;
Li, Zhao ;
Loh, Joel Yi Yang ;
Nguyen, Nhat Truong ;
He, Le ;
Zhang, Xiaohong ;
Ozin, Geoffrey A. .
NATURE ENERGY, 2024, 9 (06) :750-760
[36]   Preparation of ZSM-5 Coated on Monolithic Interconnected Macroporous Al2O3 Using Cheap n-Butylamine as Template [J].
Sun, Mingliang ;
Zhao, Tianbo ;
Wang, Jia ;
Ma, Zhaofei ;
Li, Fengyan .
CHINESE JOURNAL OF CHEMISTRY, 2015, 33 (09) :1057-1063
[37]   Fabrication of Twin-Free Nanoslab ZSM-5 Zeolite with b-Axis Orientation for Super MTP Catalyst [J].
Sun, Yu ;
Cao, Shiwei ;
Wang, Jie ;
Tang, He ;
Yang, Zhengkang ;
Ma, Tong ;
Gong, Yanjun ;
Mo, Guang ;
Li, Zhihong .
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2022, 10 (29) :9431-9442
[38]   Urea solution treatment: A facile and moderate approach to achieve hierarchical zeolite beta [J].
Tian, Fuping ;
Cao, Chunxiao ;
Hu, Min ;
Ju, Xiaohua ;
Ru, Qiaofeng ;
Xiong, Guang ;
Liu, Xiaoyu ;
Meng, Changgong .
CATALYSIS COMMUNICATIONS, 2016, 83 :66-69
[39]   Hierarchical Y and USY Zeolites Designed by Post-Synthetic Strategies [J].
Verboekend, Danny ;
Vile, Gianvito ;
Perez-Ramirez, Javier .
ADVANCED FUNCTIONAL MATERIALS, 2012, 22 (05) :916-928
[40]   Maximizing sinusoidal channels of HZSM-5 for high shape-selectivity to p-xylene [J].
Wang, Chuanfu ;
Zhang, Lei ;
Huang, Xin ;
Zhu, Yufei ;
Li, Gang ;
Gu, Qinfen ;
Chen, Jingyun ;
Ma, Linge ;
Li, Xiujie ;
He, Qihua ;
Xu, Junbo ;
Sun, Qi ;
Song, Chuqiao ;
Peng, Mi ;
Sun, Junliang ;
Ma, Ding .
NATURE COMMUNICATIONS, 2019, 10 (1)