Triethylamine template location within CoAlPO-34 type materials by high-resolution powder diffraction and single-crystal diffraction techniques
Tóm tắt
A detailed structural study into the effects of substituted cobalt concentration within the aluminophosphate material CoAlPO-34 on the uptake of the template within the framework structure has been performed. The structure is classed as “small pore”, with an aperture of ca 3.8Å, and has a structure analogous to that of the naturally occurring mineral Chabazite. Both high-resolution powder diffraction (HRPD) and single-crystal diffraction (SCD) techniques in the form of micro-crystal diffraction facilities at the Daresbury Synchrotron Source have made it possible to collect high-quality diffraction data for the range of crystalline CoAlPO-34 samples. The results showed the template location and ordering within the structure at the various substituted cobalt concentrations up to the Co:T site ratio of 1:6 expected to produce two template molecules per cage. The location of the single organic template molecule within the microporous framework is clearly shown.
Các tài liệu tham khảo
Edith M. Flanigen, Brent M. Lok, R. Lyle Patton, Stephen T. Wilson. Aluminophosphate molecular sieves and the periodic table. Studies in Surface Science and Catalysis. 1986; 23: p. 103 - 112.
Stephen T.Wilson, Edith M.Flanigen. Synthesis and characterization of metal aluminophosphate molecular sieves. Zeolite Synthesis. 1989; 398, p.329 - 345.
John Meurig Thomas, Robert Raja, Gopinathan Sankar, Robert G.Bell. Molecular sieve catalysts for the regioselective and shape-selective oxyfunctionalization of Alkanes in air. Accounts of Chemical Research. 2001; 34(3): p.191 - 200.
A.D.Smith, B.C.Cowie, G.Sankar, J.M.Thomas. Use of YB66 as monochromator crystals for soft-energy EXAFS. Journal of Synchrotron Radiation.1998; 5: p. 716 - 718.
Heinz Berndt, Andreas Martin, Yue Zhang. Study on the nature and the redox properties of cobalt species located in CoAPO molecular sieves. Microporous Materials. 1996; 6(1): p. 1 - 12.
Masashi Inoue, Pongtorn Dhupatemiya, Suphot Phatanasri, Tomoyuki Inui. Synthesis course of the Ni-SAPO-34 catalyst for methanol-to-olefin conversion. Microporous and Mesoporous Materials. 1999; 28(1): p. 19 - 24.
A.M.Prakash, S.Unnikrishnan. Synthesis of SAPO-34: high silicon incorporation in the presence of morpholine
as template. Journal of the Chemical Society, Faraday Transactions. 1994; 90(15): p. 2291 - 2296.
D.K.Chakrabarty, Sunil Ashtekar, A.M.Prakash, S.V.V.Chilukuri. Substitution of silicon and metal ions in small
pore aluminophosphate molecular sieves with chabazite structure: synthesis and MASNMR study. Studies in Surface Science and Catalysis. 1997; 105: p. 517 - 524.
Emil Dumitriu, Abdelkrim Azzouz, Vasile Hulea, Doina Lutic, Henri Kessler. Synthesis, characterization and
catalytic activity of SAPO-34 obtained with piperidine as templating agent. Microporous Materials. 1997; 10(1-3):
p. 1 - 12.
C.Urbina de Navarro, F.Machado, M.López, D.Maspero, J.Perez-Pariente. A SEM/EDX study of the cobalt
distribution in CoAPO-type materials. Zeolites. 1995; 15(2): p. 157 - 163.
R.Vomscheid, M.Briend, M.J.Peltre, P.P.Man, D.Barthomeuf. The role of the template in directing the Si distribution in SAPO zeolites. The Journal of Physical Chemistry. 1994; 98(38): p. 9614 - 9618.
M.M.Harding, B.M.Kariuki. Microcrystal structure determination of AlPO4-CHA using synchrotron radiation.
Acta Crystallographica Section C: Crystal Structure Communications. 1994; 50(6): p. 852 - 854.
L.Marchese, A.Frache, E.Gianotti, G.Martra, M.Causà, S.Coluccia. ALPO-34 and SAPO-34 Synthesised by using morpholine as templating agent. FTIR and FT-Raman studies of the host-guest and guest-guest interactions within the zeolitic framework. Microporous and Mesoporous Materials. 1999; 30(1): p.145 - 153.
Y.Xu, Peter J.Maddox, John W.Couves. The synthesis of SAPO-34 and CoSAPO-34 from a triethylamine–
hydrofluoric acid-water system. Journal of Chemical Society, Faraday Transactions. 1990; 86(2): p. 425 - 429.
J.M.Bennett, B.K. Marcus. The crystal structures of several metal aluminophosphate molecular sieves. Studies
in Surface Science and Catalysis. 1988; 37: p. 269 - 279.
D.W.Lewis, C.R.A.Catlow, J.M.Thomas. Influence of organic templates on the structure and on the concentration of framework metal ions in microporous aluminophosphate catalysts. Chemistry of Materials. 1996; 8(5): p.1112 - 1118.
G.Nardin, L.Randaccio, E.Zangrando. Lead clustering in a zeolite X. Zeolites. 1995; 15(8): p. 684 - 688.
P.A.Wright, S.Natarajan, J.M.Thomas, R.G.Bell, P.L.Gaiboyes, R. H.Jones, J.S.Chen. Solving the structure of a
metal-substituted aluminum phosphate catalyst by electron microscopy, computer simulation, and X-ray powder
diffraction. Angewandte Chemie International Edition in English. 1992; 31(11): p.1472 - 1475.
D.E.Akporiaye, H.Fjellvåg, E.N.Halvorsen, J.Hustveit, A.Karlsson, K.P.Lillerud. UiO-7: A new aluminophosphate phase solved by simulated annealing and high-resolution powder diffraction. The Journal of Physical Chemistry. 1996; 100(41): p. 16641 - 16646.
M.Goepper, J.L.Guth. Synthesis and characterization of AIPO4-14A molecular sieves. Zeolites. 1991; 11(5), p. 477 - 482.
Adeola F.Ojo, Lynne B.McCusker. AIPO4-based molecular sieves synthesized in the presence of di-n-propylamine: Are the structures related? Zeolites. 1991; 11(5): p. 460 - 465.
Asiloé J.Mora, Andrew N.Fitch, Michael Cole, Rajan Goyal, Richard H.Jones, Hervé Jobic, Stuart W.Carr. The structure of the calcined aluminophosphate ALPO4-5 determined by high-resolution X-ray and neutron powder
diffraction. Journal of Materials Chemistry. 1996; 6(11): p. 1831 - 1835.
Graham Cheetham, Marjorie M.Harding. VPI-5: Structure refinement with single crystal synchrotron radiation diffraction data. Zeolites. 1996; 16(4): p. 245 - 248.
Javier de Oñate Martinez, Lynne B.McCusker, Christian Baerlocher, Günter Engelhardt. VPI-5 at 90˚C: a synchrotron powder diffraction study. Microporous and Mesoporous Materials. 1998; 22(1-3): p.127 - 134.
R.J.Cernik, W.Clegg, C.R.A.Catlow, G.Bushnell-Wye, J.V.Flaherty, G.N.Greaves, I.Burrows, D.J.Taylor, S.J.Teat, M.Hamichi. A new high-flux chemical and materials crystallography station at the SRS Daresbury. 1. Design,
construction and test results. Journal of Synchrotron Radiation. 1997; 4: p. 279 - 286.
W.M.Meier, D.H.Olson, Ch.Baerlocher. Atlas of zeolite structure types. Butterworth-Heinenmann. 1996.
C.C.Tang, M.C.Miller, E.J.MacLean. SRS station 2.3 manual. Council for the Central Laboratory of the Research
Councils. 1998.
G.M.Sheldrick. SHELX-97. Universtiy of Gottingen. 1997.
Ch.Baerlocher, XRS-82. The X-ray rietveld system. ETH, Zurich. 1982.
D.E.Cox, J.B.Hastings, W.Thomlinson, C.T.Prewitt. Application of synchrotron radiation to high resolution
powder diffraction and rietveld refi nement. Nuclear Instruments and Methods in Physics Research. 1983;
(1 - 3): p.573 - 578.
Philip A.Barrett, Gopinathan Sankar, C.Richard, A.Catlow, John Meurig Thomas. Investigation of the structural stability of cobalt-containing AlPO-44 microporous materials. Journal of Physics and Chemistry of Solids. 1995; 56(10): p.1395 - 1405.
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