Home

Citation: Wei Chengqian, Zheng Xiangmiao, Yin Weizheng, Liu Zhenyi, Wang Dingyi, Zang Wanjing*, Lin Bihgxiong. STRUCTURAL AND ACIDIC STUDIES ON SAPO-5 MOLECULAR SIEVES[J]. Acta Physico-Chimica Sinica, ;1988, 4(05): 516-522. doi: 10.3866/PKU.WHXB19880515 shu

STRUCTURAL AND ACIDIC STUDIES ON SAPO-5 MOLECULAR SIEVES

1.
Institute of Physical Chemistry; Peking University
Deparment of Chemistry; Guangxi University
Deparsment of Chemistry; Guangxi National Academy

Received Date: 8 August 1987
Available Online: 15 October 1988

The non-proportion substitutive SAPO-5 and the selective substitutive SAPO-5 were synthesized by taking triethylamine as the template under certain experimental conditions. They result from substituting Si for P, Al in non-proportion and partly replacing of P with Si in the framework of APO-5 respectively. The compositions are as follows:
H_(y-x) (Al_(12-x)Si_x) (P_(12-y)Si_y) O_(48)·zH_2O y-x=0.5~2.01 y+x=1.3～3.09 H_xAl_(12)(P_(12_x)Si_x) O_(48)·zH_2O x=0.7~2.66
The charge in framework and the acidity enhances considerably with the difference between P and Al in the framework. The area of NH_3-TPD of the sample of the difference 1.86 is 7.4 times as that of APO-5.
The crystal structures of two SAPO-5 containing Na~+ were determineted by powder X-ray diffraction at 400 ℃. Then the structure parameters were refined by Rietveld method. The unit cells of the two SAPO-5 contain Na_(y-x) (Al_(12-x)Si_x) and (P_(12-y)Si_y)O_(48) and Na_xAl_(12) (P_(12-x)Si_y)O_(48), respectively. The constructions of their framework are quite similar to APO-5. The space group is C_(6v)~2-P6cc. The lattice parameters: a=b=1.3761(5) nm, c=0.8402(3) nm; a=b=1.3805(7) nm, c=0.8428(4) nm respectively. The “ odness of fit” is shown in Table 1. The average bod lengths of P(Si)-O, Al(Si)-O are 1.494A, 1.695A respectively and their difference equals 0.196A for the non-proportional substitutive SAPO-5. The average bond lengths of P(Si)-O, Al-O are 1.504A, 1.702A respectively and their difference equals 0.198A for the selective substitutive SAPO-5. Both of the differences are much larger than that of the disordered APO-5 and the proportional substitutiue sAPO-5. It is concluded that the ordered degree of P and Al is fairly hight in the two frameworks of SAPO-5.
There is a 12-ring straight channel ca. 0.8 nm in diameter and Na~+ are located at center of the hexa nal prism in the framework. The Brönsted center or activative center in SAPO-5 and the unique disabsorption peak of NH_3 appears in TPD spectra.
1. [1]
  Yufang GAO , Nan HOU , Yaning LIANG , Ning LI , Yanting ZHANG , Zelong LI , Xiaofeng LI . Nano-thin layer MCM-22 zeolite: Synthesis and catalytic properties of trimethylbenzene isomerization reaction. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1079-1087. doi: 10.11862/CJIC.20240036
2. [2]
  Pei Li , Yuenan Zheng , Zhankai Liu , An-Hui Lu . Boron-Containing MFI Zeolite: Microstructure Control and Its Performance of Propane Oxidative Dehydrogenation. Acta Physico-Chimica Sinica, 2025, 41(4): 2406012-0. doi: 10.3866/PKU.WHXB202406012
3. [3]
  Yong Shu , Xing Chen , Sai Duan , Rongzhen Liao . How to Determine the Equilibrium Bond Distance of Homonuclear Diatomic Molecules: A Case Study of H₂. University Chemistry, 2024, 39(7): 386-393. doi: 10.3866/PKU.DXHX202310102
4. [4]
  Yuhao SUN , Qingzhe DONG , Lei ZHAO , Xiaodan JIANG , Hailing GUO , Xianglong MENG , Yongmei GUO . Synthesis and antibacterial properties of silver-loaded sod-based zeolite. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 761-770. doi: 10.11862/CJIC.20230169
5. [5]
  Jiali CHEN , Guoxiang ZHAO , Yayu YAN , Wanting XIA , Qiaohong LI , Jian ZHANG . Machine learning exploring the adsorption of electronic gases on zeolite molecular sieves. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 155-164. doi: 10.11862/CJIC.20240408
6. [6]
  Qinhui Guan , Yuhao Guo , Na Li , Jing Li , Tingjiang Yan . Molecular sieve-mediated indium oxide catalysts for enhancing photocatalytic CO₂ hydrogenation. Acta Physico-Chimica Sinica, 2025, 41(11): 100133-0. doi: 10.1016/j.actphy.2025.100133
7. [7]
  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
8. [8]
  Shanghua Li , Malin Li , Xiwen Chi , Xin Yin , Zhaodi Luo , Jihong Yu . High-Stable Aqueous Zinc Metal Anodes Enabled by an Oriented ZnQ Zeolite Protective Layer with Facile Ion Migration Kinetics. Acta Physico-Chimica Sinica, 2025, 41(1): 100003-0. doi: 10.3866/PKU.WHXB202309003
9. [9]
  Yiping HUANG , Liqin TANG , Yufan JI , Cheng CHEN , Shuangtao LI , Jingjing HUANG , Xuechao GAO , Xuehong GU . Hollow fiber NaA zeolite membrane for deep dehydration of ethanol solvent by vapor permeation. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 225-234. doi: 10.11862/CJIC.20240224
10. [10]
  Ximeng CHI , Jianwei WEI , Yunyun WANG , Wenxin DENG , Jiayi DAI , Xu ZHOU . First-principles study of the electronic structure and optical properties of Au and I doped-inorganic lead-free double perovskite Cs₂NaBiCl₆. Chinese Journal of Inorganic Chemistry, 2025, 41(7): 1371-1379. doi: 10.11862/CJIC.20240401
11. [11]
  Hao Ren , Wen Zhao , Fangna Dai , Wenyue Guo . Finite Difference Solution of One-Dimensional Quantum Systems: (1) Fundamental Concepts and Infinite Square Well. University Chemistry, 2025, 40(3): 124-131. doi: 10.12461/PKU.DXHX202405145
12. [12]
  Wen-Bing Hu . Systematic Introduction of Polymer Chain Structures. University Chemistry, 2025, 40(4): 15-19. doi: 10.3866/PKU.DXHX202401014
13. [13]
  Baitong Wei , Jinxin Guo , Xigong Liu , Rongxiu Zhu , Lei Liu . Theoretical Study on the Structure, Stability of Hydrocarbon Free Radicals and Selectivity of Alkane Chlorination Reaction. University Chemistry, 2025, 40(3): 402-407. doi: 10.12461/PKU.DXHX202406003
14. [14]
  Yanglin Jiang , Mingqing Chen , Min Liang , Yige Yao , Yan Zhang , Peng Wang , Jianping Zhang . Experimental and Theoretical Investigations of Solvent Polarity Effect on ESIPT Mechanism in 4′-N,N-diethylamino-3-hydroxybenzoflavone. Acta Physico-Chimica Sinica, 2025, 41(2): 2309027-0. doi: 10.3866/PKU.WHXB202309027
15. [15]
  Wenyan Dan , Weijie Li , Xiaogang Wang . The Technical Analysis of Visual Software ShelXle for Refinement of Small Molecular Crystal Structure. University Chemistry, 2024, 39(3): 63-69. doi: 10.3866/PKU.DXHX202302060
16. [16]
  Yuan Chun , Yongmei Liu , Fuping Tian , Hong Yuan , Shu'e Song , Wanchun Zhu , Yunchao Li , Zhongyun Wu , Xiaokui Wang , Yunshan Bai , Li Wang , Jianrong Zhang , Shuyong Zhang . Suggestions on Operating Specifications of Physical Chemistry Experiment: Measurement of Colloidal and Surface Chemical Properties, Molecular Structure and Properties. University Chemistry, 2025, 40(5): 178-188. doi: 10.12461/PKU.DXHX202503053
17. [17]
  Tianyun Chen , Ruilin Xiao , Xinsheng Gu , Yunyi Shao , Qiujun Lu . Synthesis, Crystal Structure, and Mechanoluminescence Properties of Lanthanide-Based Organometallic Complexes. University Chemistry, 2024, 39(5): 363-370. doi: 10.3866/PKU.DXHX202312017
18. [18]
  Zhiguang Xu , Xuan Xu , Qiong Luo , Ganquan Wang , Bin Peng . Reform and Practice of Online and Offline Blended Teaching in Structural Chemistry Course. University Chemistry, 2024, 39(6): 195-200. doi: 10.3866/PKU.DXHX202310112
19. [19]
  Wenbing Hu , Jin Zhu . Flipped Classroom Approach in Teaching Professional English Reading and Writing to Polymer Graduates. University Chemistry, 2024, 39(6): 128-131. doi: 10.3866/PKU.DXHX202310015
20. [20]
  Jingwen Wang , Minghao Wu , Xing Zuo , Yaofeng Yuan , Yahao Wang , Xiaoshun Zhou , Jianfeng Yan . Advances in the Application of Electrochemical Regulation in Investigating the Electron Transport Properties of Single-Molecule Junctions. University Chemistry, 2025, 40(3): 291-301. doi: 10.12461/PKU.DXHX202406023

Get Citation

PDF

XML

Metrics

PDF Downloads(2003)
Abstract views(2316)
HTML views(7)

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