Alkylation for removing trace olefins from reforming aromatics over novel Al2O3@SO42-/ZrO2 catalysts derived from the ZrO2-coated γ-Al2O3 strategy

被引:9
作者
Wang, Sitan [1 ]
Meng, Xuan [1 ]
Liu, Naiwang [1 ]
Shi, Li [1 ]
机构
[1] East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
基金
美国国家科学基金会;
关键词
Sulfated zirconia; ZrO2; Coating structure; Alkylation; Aromatics; Olefins removal; PROMOTED SULFATED ZIRCONIA; BIODIESEL PRODUCTION; MODIFIED CLAY; SYNTHETIC PARAMETERS; ACID PROPERTIES; OLEIC-ACID; ESTERIFICATION; SO42-/ZRO2; SURFACE; NANOPARTICLES;
D O I
10.1016/j.seppur.2022.122731
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Sulfated zirconia, as a promising catalyst in various acid-catalytic reactions, still suffer from unsatisfactory catalytic stability and regeneration performance due to severe leaching of sulfur species, while aluminum modification can effectively overcome these drawbacks. Unfortunately, the limited acceptability of aluminum content by co-precipitation and milling methods remains a critical issue. Herein, an effective strategy of coating sulfated zirconia on the surface of gamma-Al2O3 was developed to synthesize the novel Al2O3@SO42-/ZrO2 catalyst with high aluminum content. The synthesis variables were investigated and systematically optimized. The structural and acidic properties of Al2O3@SO42-/ZrO2 were determined by XRD, HR-TEM equipped with EDX, N2 adsorption-desorption isotherms, EA, FT-IR, NH3-TPD and Py-FTIR. Results indicated that the unique structure constructed by sulfated zirconia coated on gamma-Al2O3 not only realized the stabilization of favorable tetragonal zirconia phase even at exceedingly high aluminum content but also promoted Bronsted acid sites. Accordingly, the optimal Al2O3@SO42-/ZrO2-50% performed outstanding catalytic activity and stability, given the olefins conversion of 98%-75% during the continuous reaction experiment. Owing to the alleviation of sulfur loss by Al-promoting effects, excellent regeneration performance, with olefins conversion only slightly declining after 4 consecutive reaction-regeneration cycles, was also obtained. The mechanistic pathway for the alkylation of olefins with aromatics over Al2O3@SO42-/ZrO2 was also investigated and proposed by GC-MS analysis.
引用
收藏
页数:17
相关论文
共 72 条
[1]   Alumina-promoted sulfated zirconia system: Structure and microstructure characterization [J].
Canton, P ;
Olindo, R ;
Pinna, F ;
Strukul, G ;
Riello, P ;
Meneghetti, M ;
Cerrato, G ;
Morterra, C ;
Benedetti, A .
CHEMISTRY OF MATERIALS, 2001, 13 (05) :1634-1641
[2]   Study on Several Mesoporous Materials Catalysts Applied to the Removal of Trace Olefins from Aromatics and Commercial Sidestream Tests [J].
Chen, Chang-wei ;
Wu, Wen-juan ;
Zeng, Xian-song ;
Jiang, Zhen-hong ;
Shi, Li .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2009, 48 (23) :10359-10363
[3]   A solid-state NMR, FT-IR and TPD study on acid properties of sulfated and metal-promoted zirconia: Influence of promoter and sulfation treatment [J].
Chen, Wen-Hua ;
Ko, Hui-Hsin ;
Sakthivel, Ayyamperumal ;
Huang, Shing-Jong ;
Liu, Shou-Heng ;
Lo, An-Ya ;
Tsai, Tseng-Chang ;
Liu, Shang-Bin .
CATALYSIS TODAY, 2006, 116 (02) :111-120
[4]   One pot synthesis of WOx/mesoporous-ZrO2 catalysts for the production of levulinic-acid esters [J].
Ciptonugroho, Wirawan ;
Al-Shaal, Mohammad G. ;
Mensah, Joel B. ;
Palkovits, Regina .
JOURNAL OF CATALYSIS, 2016, 340 :17-29
[5]   Mesoporous nanocrystalline sulfated zirconia synthesis and its application for FFA esterification in oils [J].
Deshmane, Vishwanath Ganpat ;
Adewuyi, Yusuf Gbadebo .
APPLIED CATALYSIS A-GENERAL, 2013, 462 :196-206
[6]   DETERMINATION OF INTEGRATED MOLAR EXTINCTION COEFFICIENTS FOR INFRARED-ABSORPTION BANDS OF PYRIDINE ADSORBED ON SOLID ACID CATALYSTS [J].
EMEIS, CA .
JOURNAL OF CATALYSIS, 1993, 141 (02) :347-354
[7]   Efficient synthesis of glucose into 5-hydroxymethylfurfural with SO42-/ZrO2 modified H+ zeolites in different solvent systems [J].
Feng, Yunchao ;
Zuo, Miao ;
Wang, Ting ;
Jia, Wenlong ;
Zhao, Xiaoyu ;
Zeng, Xianhai ;
Sun, Yong ;
Tang, Xing ;
Lei, Tingzhou ;
Lin, Lu .
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS, 2019, 96 :431-438
[8]   Influence of the sulfate content on the activity of Pt containing sulfated zirconia [J].
Föttinger, K ;
Zorn, K ;
Vinek, H .
APPLIED CATALYSIS A-GENERAL, 2005, 284 (1-2) :69-75
[9]   A magnetically separable SO4/Fe-Al-TiO2 solid acid catalyst for biodiesel production from waste cooking oil [J].
Gardy, Jabbar ;
Osatiashtiani, Amin ;
Cespedes, Oscar ;
Hassanpour, Ali ;
Lai, Xiaojun ;
Lee, Adam F. ;
Wilson, Karen ;
Rehan, Mohammad .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 234 :268-278
[10]   OCCURRENCE OF METASTABLE TETRAGONAL ZIRCONIA AS A CRYSTALLITE SIZE EFFECT [J].
GARVIE, RC .
JOURNAL OF PHYSICAL CHEMISTRY, 1965, 69 (04) :1238-&