Dissertations / Theses: 'Sieves'

1

Kittos, Haris. "Composing with sieves." Thesis, Royal College of Music, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.576926.

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2

Gibson, Stuart Edward. "Sieves for image retrieval." Thesis, University of East Anglia, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405401.

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3

Yoshikawa, Masahito. "Studies on Syntheses of Molecular Sieves Aimed at Extra-Large-Pore Molecular Sieves." Kyoto University, 1999. http://hdl.handle.net/2433/181340.

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4

Nair, Vinayan. "Characterization of ferrisilicate molecular sieves." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/32765.

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5

Tearle, Kathryn Mary. "Modification of aluminophosphate molecular sieves." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295923.

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6

Hampson, Brian. "Characterisation of new molecular sieves." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/14976.

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A general introduction to zeolites and aluminophosphate based molecular sieves is followed by a more detailed review of EU-1 and AlPOj-S, the two molecular sieves studied in this work. The synthesis and characterisation of these molecular sieves is described. The characterisation techniques gave details of the framework structure and composition, surface area, and morphology. A time study of the crystallisation of AlPO4-5 from an aluminophosphate gel containing two organic templates showed the formation of a hydrate phase before the AlPO4-5 phase, the change in pH during hydrothermal crystallisation, and the transformation of the Kaiser alumina spheres to give the spherical morphology of A1PO.4-5 associated with this synthesis procedure. Volumetric adsorption and subsequent desorption of but-n-ene isomers on both molecular sieves at room temperature showed that some strong adsorption of the molecules occurs, which could be removed at higher temperatures. The effect was more pronounced with EU-1. Gravimetric adsorption of various organic compounds on AlPO4-5 showed pore filling values and rates of uptake consistent with the kinetic diameters of the organic molecules. The Langmuir model, found to give the best fit for the adsorption isotherms, was seen to break down at mid-range values of P/P0. Thermal desorption of pyridine from H-EU-1 showed that the acid sites probably exist in or close to the side pockets in the EU-1 channel system, and that a side pocket may contain more than one acid site. The A1PO4-5 samples of spherical morphology were found not to have strong acid sites. The framework of calcined A1PO4-S was seen to be degraded to a denser phase by aqueous salt solutions, whereas as-synthesised samples remained intact The extent of the attack was dependent upon the anion and the solution concentration. A1PO4-11 and AlPO4-25 samples were also attacked but to a lesser extent. EU-1 and A1PO4-S samples acted as acidic catalysts in the isomerisation of but-1-ene. Only but-1-ene, cis and trans but-2-ene were observed in the gaseous phase. A strongly bound residue was detected on the surface of EU-1 by TGA. This residue was seen to deactivate the catalyst in the first instance, but heating the sample with the residue in a vacuum was seen to change the catalytic nature of the zeolite. The activity of the A1PO4-5 samples was lower than EU-1 under identical conditions. However, samples of the AlPO4-5 spheres were seen to have a higher activity than the usual barrels. Investigations gave no solid evidence for the seat to this increased activity, but it is thought that framework defect sites may be responsible.

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7

Brinen, Jeffrey Lawrence. "Characterization of modified aluminophosphate molecular sieves." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/11813.

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8

He, Heyong. "Structural studies of novel molecular sieves." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309870.

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9

Chagger, Harnit Kaur. "Carbon molecular sieves for air separation." Thesis, University of Newcastle Upon Tyne, 1994. http://hdl.handle.net/10443/851.

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Carbon is one of the naturally occurring elements and has an atomic weight 12.01 atomic mass units (amu) and atomic number 6. It has six electrons and has an electronic configuration of: ls2 2S2 1p2 in the ground state. This element exists in different crystalline forms-diamond, graphite, buckminsterfullerene1 and carbyne2. Carbon also has the ability of catenation via formation of σ and π bonds.

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10

Heslop, Mark J. "Binary gas adsorption in molecular sieves." Thesis, Loughborough University, 1993. https://dspace.lboro.ac.uk/2134/6861.

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This thesis is concerned with the development of sorption-effect chromatography as a rapid method for the determination of binary gas-mixture adsorption isotherms.There are many alternative non-chromatographic methods but these have inherent disadvantages the direct experimental methods require excessive equilibration times and the predictive methods require the respective pure-component isotherms and an ideal adsorbed phase. A computer simulation has shown that for an alternative chromatographic method, good results will only be obtained if both binary isotherms are close to linear. Sorption-effect chromatography is characterised by the flowrate retention time (TN) which measures the change in column inventory when a perturbation is made to the system. Along with the standard composition retention time (Tx), this extra measurement allows the gradient of each binary isotherm to be evaluated. Subsequent integration will give the respective mixture isotherm. Three gas systems (nitrogen-argon, nitrogen-helium and argon-helium) have been investigated over zeolite 5A at different temperatures. The results confirm that the adsorbed phase amounts decrease, with increasing temperature and that there are degrees of component interaction. Experimentally, thermal fluctuations in the oven will cause noise on the flowrate record making TN determination difficult. Isolation of the column from direct air flow was seen to reduce the noise level. Also, using a computer simulation model, the heat of adsorption for the above zeolite 5A systems will be easily dissipated preventing any unwanted gas temperature rises; the comparatively small column diameter was found to be a significant factor. The employment of delay lines (empty tubes) in various locations has been investigated. To directly determine TN it is necessary to used delay lines downstream of the column. Also, the chromatographic method has been extended to determine mixture isotherms by considering the change in average column pressure rather than the motion of a composition front through the column. Delay lines situated upstream of the column are able to separate these two effects, and preliminary results are satisfactory. However, the use of delay lines anywhere in the system changes the measured retention times and the theory has to be adjusted to account for this.

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11

Sinclair, D. M. "Crystallization of high silica molecular sieves." Thesis, University of Edinburgh, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384262.

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12

Möller, Andreas, Joachim Guderian, Marcus Lange, and Jens Möllmer. "Carbon Molecular Sieves – a kinetic study." Diffusion fundamentals 20 (2013) 97, S. 1, 2013. https://ul.qucosa.de/id/qucosa%3A12634.

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13

Möller, Andreas, Joachim Guderian, Marcus Lange, and Jens Möllmer. "Carbon Molecular Sieves – a kinetic study." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-183868.

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14

Torres, Melissa Christine. "Copper adsorption on functionalized molecular sieves." Thesis, University of Iowa, 2011. https://ir.uiowa.edu/etd/1096.

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15

Naydenov, Valeri. "Structured molecular sieves : synthesis, modification and characterization /." Luleå, 2003. http://epubl.luth.se/1402-1544/2003/39.

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16

Simmons, Donald Karl. "Acid catalytic properties of metallosilicate molecular sieves." Thesis, Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/10151.

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17

Biz, Sophie. "Synthesis and characterization of mesostructured molecular sieves." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/17920.

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18

Klimczyk, Malgorzata. "Separation of hexane isomers using molecular sieves." Thesis, De Montfort University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.697435.

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19

Williams, Paul Jason. "Analysis of factors influencing the performance of CMS membranes for gas separation." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-05082006-082322/.

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Thesis (Ph. D.)--Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2007.
Teja, Amyn, Committee Member ; Koros, William, Committee Chair ; Jones, Christopher, Committee Member ; Nair, Sankar, Committee Member ; Kumar, Satish, Committee Member.

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20

Vaughan, James Stuart. "Synthesis, characterization and high pressure propene oligomerization over heteropoly acids, SAPO-11 molecular sieves and MeAPSO-11 molecular sieves." Doctoral thesis, University of Cape Town, 1993. http://hdl.handle.net/11427/21991.

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Bibliography: pages 219-232.
Heteropoly acids, HPAs, and SAPO-11 and MeAPSO-11 molecular sieves have been proposed to be active for the oligomerization of propene to high quality distillate fuels. In this study these catalysts have been synthesized, characterized, modified and screened for the oligomerization of propene to distillate fuels. Heteropoly acids consist of high molecular weight poly-oxoanions, counter cations and water of hydration and are strongly acidic. The following salts of 12-tungstophosphoric acid, a 12-type HPA with the Keggin anion structure, were synthesized: AI, Fe, Ce, Ni, Co, Cu, K and NH₄, as well as the AI and NH₄ salts of 12-tungstosilicic acid. Physicochemical characterization of the HPA salts revealed that, depending on the counter cation, these salts exhibited different thermal characteristics and surface areas. The salts were classified into two types, viz.: Type A:- low surface area salts, typically less than 15m²/g, with multiple endothermic mass losses (e.g. AI, Fe, Ce, Ni, Co, Cu) and; Type 8:- high surface area salts, typically 35-150 m²/g, with a single endothermic mass loss (e.g. K and NH₄). The Type A salts were multi-crystalline, consisting of more than one phase, and exhibited a non-uniform morphology. The Type B salts, on the other hand, were uniformly crystalline and consisted of small rounded cubic crystallites. Ammonia desorption, monitored by both TCD and FT-IR, revealed that both the Type A and B salts were strongly acidic with the majority of the ammonia being released only upon decomposition of the salt. However, as ammonia and other polar molecules are known to readily absorb into the bulk of HPAs, the ammonia TPD results did not correlate with catalytic activity for surface type reactions such as alkene isomerization and oligomerization. The Type B salts were active for cracking and skeletal isomerization reactions which suggested strong acid sites were present on their surface. The Type A salts only exhibited double bond shift isomerization activity, suggesting sites of only weak to medium acid strength.

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21

Annen, Michael J. "Synthesis and characterization of novel molecular sieves containing three-membered rings." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-07282008-134605/.

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22

Triebe, Robert W. "Separation and purification of gases with molecular sieves." Thesis, University of Ottawa (Canada), 1994. http://hdl.handle.net/10393/9657.

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Equilibrium adsorption constants were determined for CO, CO$\sb2$, NO, N$\sb2$, CH$\sb4$, C$\sb2$H$\sb4$, and C$\sb2$H$\sb6$ on various molecular sieves between 233 and 523 K. The molecular sieves tested for adsorption of these gases were 4A and 5A zeolite, 13X and a CaX zeolite, H-mordenite, a natural clinoptilolite and a carbon molecular sieve. The gas chromatographic method was used for all equilibrium measurements. Upon choosing the promising CO/N$\sb2$/clinoptilolite system for further studies, kinetic (diffusion) characteristics of each of these pure gases in the clinoptilolite ports was examined between 323 and 423 K using the gas chromatographic method. Pure gas and binary gas adsorption isotherms for the CO/N$\sb2$/clinoptilolite system were determined up to 1 atmosphere pressure at 303 K using the gas chromatographic method. Pure isotherms were fit with the Lanpmuir and Vacancy Solution Theory models. Pure gas modelling results were used to predict and compared to the experimentally determined binary gas isotherms. Separation of polar compounds from non-polar compounds was facilitated by inclusion of divalent cations in the zeolite micropores. Clinoptilolite showed great promise for various separations. The chromatographic method for measuring adsorption isotherms is limited in the measurement of rectangular isotherms, yielding errors dependant upon the accuracy of the gas blending system. The Wilson form of the VST accurately predicts the binary adsorption data.

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23

Barrie, Patrick J. "Synthesis and characterization of aluminophosphate-based molecular sieves." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335103.

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24

Khan, Tasneem Anwar. "Syntheses of molecular sieves and inorganic porphyrinic solids." Thesis, University of Birmingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369393.

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25

Sinclair, Phillip Edward. "Computational studies of organic transformations in molecular sieves." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301298.

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26

Cheng, Chi-Feng. "Solid-state NMR studies of mesoporous molecular sieves." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243004.

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27

Fletcher-Wood, Rowena. "Zeolites and other molecular sieves for chromate remediation." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5789/.

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Porous solids loaded with redox-active ions were examined for the selective uptake and simultaneous reduction of Cr(VI) from aqueous solution. XRF spectroscopy was used to determine the extent of chromium uptake by molecular sieves: 29.1 mg$_C$$_r$/g$_s$$_i$$_e$$_v$$_e$ for Mn-loaded AIPO-5. Some systems were templated: TEM confirmed the introduction of mesopores. Mössbauer and EPR spectroscopies characterised oxidation states and site symmetries of metal ions. Fe(II)-loaded molecular sieves were found to be appreciably oxidised (~ 80 %). To increase the fraction of redox-active ions, promising systems were reduced under 500ºC hydrogen flow for 0-24 hours. Fe(II) fraction increased and Fe(0) metal was evolved after 3-6 hours. Fe(0) was found not to increase chromium loadings, and PXRD patterns demonstrated loss in crystallinity with irreversible breakdown of the molecular sieve upon formation of metal clusters. Fe(II) and MN(II) zeolite X samples were highly selective towards Cr(VI), even in mixed solutions, until large numbers of other metal ions were introduced. Competitive ion exchange, complexation and acid treatment were explored for the purpose of extracting Cr(III) and recycling the molecular sieve. Ba(II) and Ag(I) ions showed the greatest promise for chromium extraction.

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28

Franklin, Keith Campbell. "The synthesis of aluminophosphate and silica molecular sieves." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/13845.

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The work described in this thesis is concerned with the synthesis of aluminophosphate and silica molecular sieves, in particular, the search for novel large pore materials. Reactions were studied systematically under a range of conditions and, to assist in this, a new type of reaction vessel was designed and fabricated. In the aluminophosphate system, a novel synthetic method using a water soluble aluminium phosphate hydrochloride ethanolate precursor is described. This provides a new synthesis route to the ultra-wide pore aluminophosphate molecular sieve VPI-5, without the use of quaternary ammonium compounds or amines. Aluminophosphates H2, H3 and H4 can also be synthesised using this method, and the relationship between AlPO₄-H1 and VPI-5 is discussed. Further work on the aluminophosphate system has resulted in the synthesis of two new piperazine aluminophosphate materials, EA-5 and EA-6. EA-6 has been analysed by single crystal diffraction and found to possess a layered structure. Studies were also carried out on related heterocyclic organic compounds in an aluminophosphate synthesis gel. This resulted in the crystallisation of known materials, and a further phase not yet identified. In the silica system, the use of dual templates has been investigated using trioxane in combination with a variety of other organic compounds. In these experiments, the structure directing power of trioxane in the presence of Na+ is clearly demonstrated. A single crystal study of trioxane silica sodalite has also been carried out and the synthesis of a sodium-free synthesis of silica sodalite is described for the first time.

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29

Chung, Hsiu Hsin. "Fabrication and testing of dual-wavelength photon sieves." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0013424.

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30

Gimenez, David. "Colour morphological sieves for scale-space image processing." Thesis, University of Bath, 2007. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438625.

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31

Sun, Jian. "Mesoporous molecular sieves, from catalysis to solid phase synthesis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0024/MQ62158.pdf.

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32

Patel, Urmila. "Ti-containing mesoporous molecular sieves and selective oxidation reactions." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288130.

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33

Browning, Jonathan Darren. "Synthesis of discrete models for aluminophosphate-type molecular sieves." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241907.

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34

Khouw, Charles B. Davis Mark E. Davis Mark E. "Partial oxidation of hydrocarbons using titanium containing molecular sieves /." Diss., Pasadena, Calif. : California Institute of Technology, 1995. http://resolver.caltech.edu/CaltechETD:etd-10122007-103304.

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35

Martinez-Inesta, Maria M. "Pair distribution function as a probe for disorder in molecular sieves." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 2.69 Mb., 260 p, 2005. http://proquest.umi.com/pqdlink?did=1037889231&Fmt=7&clientId=8331&RQT=309&VName=PQD.

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36

Omar, Abdul Aziz Bin. "Transport of sorbable gases through zeolitic and porous carbon membranes." Thesis, Imperial College London, 1993. http://hdl.handle.net/10044/1/8686.

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37

Perry, John Douglas. "Formation and characterization of hybrid membranes utilizing high-performance polyimides and carbon molecular sieves." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-05152007-063433/.

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Thesis (Ph. D.)--Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2008.
Koros, William J., Committee Chair ; Breedveld, Victor, Committee Member ; Jones, Christopher W., Committee Member ; Kumar, Satish, Committee Member ; Nair, Sankar, Committee Member.

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38

Ylihautala, M. (Mika). "NMR of small solutes in liquid crystals and molecular sieves." Doctoral thesis, University of Oulu, 1999. http://urn.fi/urn:isbn:9514252748.

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Abstract The present thesis deals with the nuclear magnetic resonance (NMR) spectroscopy of small solutes applied to the studies of liquid crystals and molecular sieves. In this method, changes induced by the investigated environment to the static spectral parameters (i.e. nuclear shielding, indirect and direct spin-spin coupling and quadrupole coupling) of the solute are measured. The nuclear shielding of dissolved noble gases is utilized for the studies of thermotropic liquid crystals. The relation between the symmetry properties of mesophases and the nuclear shielding is described. The different interaction mechanisms perturbing the observed noble gas nuclear shielding are discussed, particularly, the role of long-range attractive van der Waals interactions is brought out. The suitability of the noble gas NMR spectroscopy to the studies of lyotropic liquid crystals is investigated in terms of nuclear shielding and quadrupole coupling interactions. In molecular sieve systems, the effect of inter- and intracrystalline motions of solutes on their NMR spectra is discussed. A novel method for the measurement of the intracrystalline motions is developed. The distinctions in the 13C shielding of methane adsorbed in AlPO4-11 and SAPO-11, two structurally similar molecular sieves differing in composition, are indicated.

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39

Ylihautala, Mika. "NMR of small solutes in liquid crystals and molecular sieves /." Oulu : Oulun Yliopisto, 1999. http://www.gbv.de/dms/goettingen/304055468.pdf.

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40

Thomas, Susan Murphree. "The synthesis and characterization of novel, inorganically pillared molecular sieves." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/30891.

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41

Fegan, S. G. "Hydrophilic and organophilic properties of zeolites and silica molecular sieves." Thesis, University of Edinburgh, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354124.

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42

Scott, Gillian. "Sorption of phenols from aqueous solution by silica molecular sieves." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/12908.

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43

Cruickshank, Graeme Duncan. "Preparation, characterisation and catalytic properties of gallium loaded molecular sieves." Thesis, University of Edinburgh, 1994. http://hdl.handle.net/1842/13504.

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The work described in this Thesis is concerned with the preparation, characterisation and catalysis of a range of metal loaded Molecular Sieves and, in particular, gallium containing Zeolite and Zeotype materials. Commercially, the CYCLAR process transforms LPG to aromatics using a catalyst based on gallium and Zeolite ZSM-5. Methods for preparing both this catalyst and related materials employing alternative zeolite structures have been explored and the resulting catalysts studied for their activity in propane conversion. A range of zeolite molecular sieves and their gallium analogues, with the EUO and MFI framework structures, have been prepared. Attempts to prepare EUO materials with increased metal content yielded the intergrowth material NU-85. The basic physical properties of these materials have been characterised by a variety of techniques including X-ray powder diffraction (XRPD), thermal gravimetric analysis (tga), scanning electron microscopy (SEM), X-ray fluorescence (XRF), neutron activation analysis (NAA) and acidity determinations by ammonia temperature programmed desorption (TPD). X-ray photoelectron spectroscopy (XPS) has shown the isomorphous substitution of gallium into framework sites in these molecular sieves is not homogeneous, with the zeotype crystals having a gallium rich crust and a siliceous core. This technique has also shown the presence of partially reduced gallium species in discharged catalysts. In catalysis studies all materials exhibited hydrogenolysis, dehydrogenation, oligomerisation activity to varying degrees in addition to the aforementioned CYCLAR aromatisation. Although the commercial preparation displayed the highest activity for aromatisation several of the gallosilicate and gallium doped EU-1 catalysts showed a potentially useful high selectivity for propane dehydrogenation, albeit at low conversion.

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44

Zhang, Tengyan. "Preparation and characterization of carbon molecular sieves and activated carbons /." Search for this dissertation online, 2004. http://wwwlib.umi.com/cr/ksu/main.

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45

Lukac, Martin. "The Number Field Sieve." Diss., Connect to the thesis, 2002. http://hdl.handle.net/10066/1469.

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46

Pearce, Gordon Michael. "Synthesis, adsorption and catalysis of large pore metal phosphonates /." St Andrews, 2009. http://hdl.handle.net/10023/823.

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47

Ojo, Adeola Florence. "The synthesis and characterization of the third generation aluminophosphate-based molecular sieves." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277345.

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48

Axon, Sean Alexander. "MFI-type zeolites synthesized in non-alkaline media." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240100.

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49

Noble, Graham William. "Synthesis of new microporous solids by template design." Thesis, University of St Andrews, 1999. http://hdl.handle.net/10023/15108.

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The rational design and synthesis of organic templates for the synthesis of new microporous materials has resulted in the production of five new materials, three of which are known to be microporous, the other two being better described as being open framework materials. The first three microporous materials are named STA-1, -2 and -3 (for St. Andrews) and have structural compositions of the form MgxAl1-xPO4 x/n Rn+.yH2O (Mg0.18Al0.82PO4.R0.094-0.22H2O, as determined by EDX for STA-1). The fourth novel microporous solid is a boron aluminophosphate (BAlPO) and the fifth an aluminophosphate solid containing its organic template intact. All of the new materials were synthesised following a systematic study over a wide range of templates including 5 homologous series designed specifically to be used as templates in the production of alumino-silicates and -phosphates. The structure of the first two magnesium aluminophosphates (STA-1, STA-2) to be solved by single microcrystal diffraction at the ESRF at Grenoble on crystals approximately 30 x 30 x 30 mum in size is described. The in situ location of the template was determined directly from x-ray diffraction in the second of these materials and has formed part of a combined experimental and computational study into template location within novel frameworks. The study shows how the encapsulation of the template is directly responsible for the similarity in pore architecture between MAPO-56 and STA- 2 (which co-crystallise) since the template adopts the same orientation in both materials Polymeric / oligomeric templates have also formed part of this study. These templates are shown to influence the phase, crystallinity, particle size and catalytic performance of the product magnesio-aluminophosphate MAPO-31. Computer modelling has also been utilised to interpret the experimental data obtained from the systematic study on the use of polymeric templates. The in situ synthesis and subsequent encapsulation of two coordination complexes inside the supercage of zeolite-Y, including the 3-methyl-1,3,5,8,12- pentaazacyclotetradecane macrocycle is also described.

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50

Matomaki, Kaisa Sofia. "Applications of sieve methods in analytic number theory." Thesis, University of London, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549585.

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Dissertations / Theses on the topic 'Sieves'

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