Synthesis composition

BMI intermediate synthesis [COMPOSITE MATERIALS - POLYTffiR-MATRLO - THERMOSETS] (Vol 7) -coumarin reduction [COUMARIN] (Vol 7)... 

Hanak, J.J. (1970) The multiple-sample concept in materials research synthesis, compositional analysis and testing of entire multicomponent systems. J. Mater. Sci., 5, 964. 

Fotiev, A. Slobodin, B. V. Hodos, M. Y. Vanadates, their Synthesis, Composition and Properties, Nauka Moscow (in Russian), 1988. 

Although a variety of synthesis, compositions and reactor parameters were studied, the P-V-0 catalysts in the temperature series were synthesized in the up flow HTAD reactor using a 0.12 M solution of anunonium vanadate in water which contained the required amount of 85% phosphoric acid to result in a 1.2/1.0 P/V atom ratio. This atom ratio is normally preferred for the most selective oxidation of butane to maleic anhydride. Table I shows that the P/V atom ratios obtained for the analyzed, finished (green colored) catalysts were approximately the same as the feed composition when a series of preparations were studied between 350 C and 800°C. This was typical for all of the catalysts synthesized under a variety of conditions. 

Holczer, K., Klein, O., Huang, S.-M., Kaner, R. B., Fu, K.-J., Whetten, R. L. Diederich, F. 1991 Alkali-fulleride superconductors synthesis, composition, and diamagnetic shielding. Science, Wash. 252, 1154-1157. 

First, although the use of bulky organic bases clearly shifts the silicate equilibrium to the DnR species, there may be a large amount (up to more than 90%) of polymeric species present in silicate solutions. This is true especially at low OH/Si ratios (<0.5) or high Si concentrations (>2), i.e., normal values for a zeolite synthesis composition. This range of polymeric silicates cannot at present be characterized satisfactorily, and the presence of zeolite precursor species other than DnR silicates in this range cannot be excluded. 

SiOj / Na20 Synthesis composition H2O / NajO B2O3 / crystallization time ter m phase composition... 

Althoff, Schulz-Dobrick, Schuth and Unger (17) synthesized 40 p ZSM-5 crystals with a Si/Al ratio of 85 in a 1,6-hexanediol base. Electron probe A1 and Si scans in Fig. 6 show a uniform distribution across the crystal. If KNO3 is added to the synthesis composition the A1 is zoned similarly to the TPA based ZSM-5. This is an interesting synthesis as the A1 distribution can be varied. 

Ho91a K. Holczer et ai, Alkali-Fulleride Superconductors Synthesis, Composition, and Dia- Mu92... 

Alkali-Fulleride Superconductors Synthesis, Composition and Diamagnetic Shielding... 

Figure 4.34 Crystal orientation-synthesis composition map of MFI film. Reproduced with permission from [134]. Copyright (2001) American Chemical Society...

A comparison between thermal and microwave syntheses of colloidal silicalite-1 has provided a clear demonstration of the separate contributions of room-temperature ageing, heating rate and synthesis temperature to the nucleation process. At ageing times up to about 50 days, the product crystal size obtainable from a single synthesis composition is sensitive to reaction temperature and heating rate. After this time, ageing-generated proto-nuclei are so numerous that the normal self-nucleation of the reaction mixture is suppressed and the product crystal size is independent of reaction conditions. There is a limit to the number of crystals which can be nucleated and this is an intrinsic property of the system. 

Analysis of Polymers. The repeat unit structure of a synthetic polymer usually is known from the method of synthesis. Compositions of copolymers often are determined by elemental analysis when one monomer contains an element not present in the other monomer. Soluble polymers are often characterized by their molecular weights and molecular weight distribution, but insolubility prevents such characterization of cross-linked polymers. 

Fischer-Tropsch Synthesis Compositional Modulation Study using an Iron Catalyst... 

Bonner G.A., Tuvell M.E., Ethyl Corporation USA. "Sulfonated Me. esters, their synthesis, composition application". 

Liotta DC, Schinazi RF, Choi W-B (1997) Method for the synthesis, compositions and use of 2 -deoxy-5-fluoro-3 -thiacytidine and related compounds. US 57(X)937... 

Dodge, C. and Jerse, T. A. (1985). Computer Music - synthesis, composition and performance, New York, NY Schirmer Books. 

G. Zotti, S. Zecchin, G. Schiavon, F. Louwet, L. Groenendaal, X. Crispin, W. Osikowicz, W. Salaneck, and M. Fahlman. 2003. Electrochemical and XPS studies toward the role of monomeric and polymeric sulfonate counterions in the synthesis, composition, and properties of poly(3,4-ethylenedioxythiophene). 

Hui CM, Dang A, Chen B, Yan J, Konkolewicz D, He H, Ferebee R, Bockstaller MR, Matyjaszewski K (2014) Effect of thermal self-initiation on the synthesis, composition, and properties of particle brush materials. Macromolecules 47(16) 5501-5508... 

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