Home

Citation: ZHANG Yue-Wei, SHEN Mei-Qing, WU Xiao-Dong, WENG Duan, ZHANG Zhi-Hua, TIAN Ran, CHI Ke-Bin. Modification of the Structure and Properties of SAPO-11 Using Rare Earths[J]. Acta Physico-Chimica Sinica, ;2006, 22(12): 1495-1500. doi: 10.1016/S1872-1508(06)60077-6 shu

Modification of the Structure and Properties of SAPO-11 Using Rare Earths

1.
(Key Laboratory for Green Chemical Technology of the Ministry of Education of China, School of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China; Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China; Research Institute of PetroChina Daqing Petrochemical Company, Daqing 163714, P. R. China)

Received Date: 16 June 2006
Available Online: 6 December 2006

Silicoaluminophosphate (SAPO)-11 molecular sieve was modified by rare earth La and Ce using impregnating and ion-exchanging methods. The RE-modified SAPO-11 samples were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), pore-size distribution (PSD), in-situ Fourier transform infrared spectroscopy (FTIR), and temperature-programmed desorption of ammonia (NH3-TPD), and compared with unmodified SAPO-11 sample. The XRD patterns indicated that after RE modification, especially for the La-exchanged sample, the composition of molecular sieve was changed and the crystallinity decreased. The normalized surface area (NSA) of ion-exchanged samples proved that the unsubstituted metal oxides accumulated inside the SAPO-11 pores. Because of the RE cations that were loaded onto the surface of molecular sieve, which could be regarded as the Lewis acid sites, there was an increase in the amount of Lewis acid sites and decrease in the Brønsted acid/Lewis acid (B/L) ratio. The ability of RE cations to acquire electrons was weaker than that of Al3+; therefore, the bond strength of bridged hydroxyl decreased after modification. The total acidity of SAPO-11 decreased after RE modification.
- SAPO-11;La;Ce;Modification;Surfaces properties;Acidity
1. [1]
  Xiaosong PU , Hangkai WU , Taohong LI , Huijuan LI , Shouqing LIU , Yuanbo HUANG , Xuemei LI . Adsorption performance and removal mechanism of Cd(Ⅱ) in water by magnesium modified carbon foam. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1537-1548. doi: 10.11862/CJIC.20240030
2. [2]
  Xuejiao Wang , Suiying Dong , Kezhen Qi , Vadim Popkov , Xianglin Xiang . Photocatalytic CO₂ Reduction by Modified g-C₃N₄. Acta Physico-Chimica Sinica, 2024, 40(12): 2408005-. doi: 10.3866/PKU.WHXB202408005
3. [3]
  Xin XIONG , Qian CHEN , Quan XIE . First principles study of the photoelectric properties and magnetism of La and Yb doped AlN. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1519-1527. doi: 10.11862/CJIC.20240064
4. [4]
  Shenhao QIU , Qingquan XIAO , Huazhu TANG , Quan XIE . First-principles study on electronic structure, optical and magnetic properties of rare earth elements X (X=Sc, Y, La, Ce, Eu) doped with two-dimensional GaSe. Chinese Journal of Inorganic Chemistry, 2024, 40(11): 2250-2258. doi: 10.11862/CJIC.20240104
5. [5]
  Chuanming GUO , Kaiyang ZHANG , Yun WU , Rui YAO , Qiang ZHAO , Jinping LI , Guang LIU . Performance of MnO₂-0.39IrO_x composite oxides for water oxidation reaction in acidic media. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1135-1142. doi: 10.11862/CJIC.20230459
6. [6]
  Xingyang LI , Tianju LIU , Yang GAO , Dandan ZHANG , Yong ZHOU , Meng PAN . A superior methanol-to-propylene catalyst: Construction via synergistic regulation of pore structure and acidic property of high-silica ZSM-5 zeolite. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1279-1289. doi: 10.11862/CJIC.20240026
7. [7]
  Yi Zhou , Yanzhen Liu , Yani Yan , Zonglin Yi , Yongfeng Li , Cheng-Meng Chen . Enhanced oxygen reduction reaction on La-Fe bimetal in porous N-doped carbon dodecahedra with CNTs wrapping. Chinese Chemical Letters, 2025, 36(1): 109569-. doi: 10.1016/j.cclet.2024.109569
8. [8]
  Chen Lian , Si-Han Zhao , Hai-Lou Li , Xinhua Cao . A giant Ce-containing poly(tungstobismuthate): Synthesis, structure and catalytic performance for the decontamination of a sulfur mustard simulant. Chinese Chemical Letters, 2024, 35(10): 109343-. doi: 10.1016/j.cclet.2023.109343
9. [9]
  Meng Wang , Yan Zhang , Yunbo Yu , Wenpo Shan , Hong He . High-temperature calcination dramatically promotes the activity of Cs/Co/Ce-Sn catalyst for soot oxidation. Chinese Chemical Letters, 2025, 36(1): 109928-. doi: 10.1016/j.cclet.2024.109928
10. [10]
  Huanyu Liu , Gang Yu , Ruoyao Guo , Hao Qi , Jiayin Zheng , Tong Jin , Zifeng Zhao , Zuqiang Bian , Zhiwei Liu . Direct identification of energy transfer mechanism in Ce^Ⅲ-Mn^Ⅱ system by constructing molecular heteronuclear complexes. Chinese Chemical Letters, 2025, 36(2): 110296-. doi: 10.1016/j.cclet.2024.110296
11. [11]
  Jinyuan Cui , Tingting Yang , Teng Xu , Jin Lin , Kunlong Liu , Pengxin Liu . Hydrogen spillover enhances the selective hydrogenation of α,β-unsaturated aldehydes on the Cu-O-Ce interface. Chinese Journal of Structural Chemistry, 2025, 44(1): 100438-100438. doi: 10.1016/j.cjsc.2024.100438
12. [12]
  Wen YANG , Didi WANG , Ziyi HUANG , Yaping ZHOU , Yanyan FENG . La promoted hydrotalcite derived Ni-based catalysts: In situ preparation and CO₂ methanation performance. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 561-570. doi: 10.11862/CJIC.20230276
13. [13]
  Limei CHEN , Mengfei ZHAO , Lin CHEN , Ding LI , Wei LI , Weiye HAN , Hongbin WANG . Preparation and performance of paraffin/alkali modified diatomite/expanded graphite composite phase change thermal storage material. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 533-543. doi: 10.11862/CJIC.20230312
14. [14]
  Bao Jia , Yunzhe Ke , Shiyue Sun , Dongxue Yu , Ying Liu , Shuaishuai Ding . Innovative Experimental Teaching for the Preparation and Modification of Conductive Organic Polymer Thin Films in Undergraduate Courses. University Chemistry, 2024, 39(10): 271-282. doi: 10.12461/PKU.DXHX202404121
15. [15]
  Yufei Liu , Liang Xiong , Bingyang Gao , Qingyun Shi , Ying Wang , Zhiya Han , Zhenhua Zhang , Zhaowei Ma , Limin Wang , Yong Cheng . MOF-derived Cu based materials as highly active catalysts for improving hydrogen storage performance of Mg-Ni-La-Y alloys. Chinese Chemical Letters, 2024, 35(12): 109932-. doi: 10.1016/j.cclet.2024.109932
16. [16]
  Pengyu Chen , Beibei Chen , Man He , Yuxi Zhou , Lei Lei , Jian Han , Bingsheng Zhou , Ligang Hu , Bin Hu . Nanoplastics and nano-ZnO facilitate Cd accumulation in zebrafish larvae via a distinct pathway: Revelation by LA-ICP-MS imaging. Chinese Chemical Letters, 2025, 36(2): 109908-. doi: 10.1016/j.cclet.2024.109908
17. [17]
  Xiaotian ZHU , Fangding HUANG , Wenchang ZHU , Jianqing ZHAO . Layered oxide cathode for sodium-ion batteries: Surface and interface modification and suppressed gas generation effect. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 254-266. doi: 10.11862/CJIC.20240260
18. [18]
  Mingxin LU , Liyang ZHOU , Xiaoyu XU , Xiaoying FENG , Hui WANG , Bin YAN , Jie XU , Chao CHEN , Hui MEI , Feng GAO . Preparation of La-doped lead-based piezoelectric ceramics with both high electrical strain and Curie temperature. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 329-338. doi: 10.11862/CJIC.20240206
19. [19]
  Shuangxi Li , Huijun Yu , Tianwei Lan , Liyi Shi , Danhong Cheng , Lupeng Han , Dengsong Zhang . NO_x reduction against alkali poisoning over Ce(SO₄)₂-V₂O₅/TiO₂ catalysts by constructing the Ce⁴⁺–SO₄²⁻ pair sites. Chinese Chemical Letters, 2024, 35(5): 108240-. doi: 10.1016/j.cclet.2023.108240
20. [20]
  Shiyi WANG , Chaolong CHEN , Xiangjian KONG , Lansun ZHENG , Lasheng LONG . Polynuclear lanthanide compound [Ce₄^ⅢCe₆^Ⅳ(μ₃-O)₄(μ₄-O)₄(acac)₁₄(CH₃O)₆]·2CH₃OH for the hydroboration of amides to amine. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 88-96. doi: 10.11862/CJIC.20240342

Get Citation

PDF

XML

Metrics

PDF Downloads(2832)
Abstract views(4333)
HTML views(101)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return