[PDF] Top 20 J. Braz. Chem. Soc. vol.25 número12
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J. Braz. Chem. Soc. vol.25 número12
... foram criados vários laboratórios nas universidades, nos centros de pesquisas (Instituto de Pesquisas Tecnológicas - IPT, Núcleos de Catálise e Instituto Nacional de Tecnologia - INT [r] ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... The influence of several experimental parameters, such as catalyst concentration, reaction temperature, and tin precursor, as well as the reuse of the catalysts, were investigated in [r] ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... Agency – FINEP, and so, in the early 80’s, the National Catalysis Network / National Program of Catalysis – PRONAC was established, assembling regional groups and specific projects fo[r] ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... precursors salts (cerium (IV) ammonium nitrate, zirconium and praseodymium nitrate, or ammonium niobium oxalate) was prepared with a Me/Ce molar ratio of 1/9 (Me = Zr, Pr or Nb). Cerium and zirconium, praseodymium or ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... and 25 atm (entries 5 and ...and 25 atm, can be explained by the saturation of hydrogen in the bulk reaction, and probably the diffusion of this reagent towards the catalytic center does not limit the ... See full document
6
J. Braz. Chem. Soc. vol.25 número12
... The catalyst is also useful for the tandem sequence hydroformylation/acetalization of allyl benzenes in methanol or ethanol solutions, in which the primarily formed aldehydes could be[r] ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... A prime example is the use of ILs based on imidazolium in dehydration processes sugar (fructose or glucose) with satisfactory results related to the selectivity that can be improved i[r] ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... amino]-2-(hydroxymethyl)-1,3-propanediol (BIS TRIS, pH 6-7) and TRIS (pH 7-9) in the reactions in micellar media. Absorbance vs. time data were stored directly on a microcomputer, and observed first-order rate constants, ... See full document
7
J. Braz. Chem. Soc. vol.25 número12
... 500 °C and kept at that temperature for 2 h. This step was carried out in a stainless steel carbonization reactor electrically heated. Each carbonized material was weighted and separated in two fractions. One of them was ... See full document
7
J. Braz. Chem. Soc. vol.25 número12
... Activity tests were conducted at atmospheric pressure in a Pyrex micro reactor of fixed bed using 100 mg of the supported and 25 mg of the unsupported Ni catalysts, respectively. Output gases were analyzed in a ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... This in situ O 2 generation under visible light absorption allows the degradation of the dyes without the necessity to bubble air or oxygen in the reaction system The photocatalytic[r] ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... 8. Hunt, A. J.; Sin, E. H. K.; Marriott, R.; Clark, J. H.; ChemSusChem 2010, 3, 306; Olah, G. A.; Surya Prakash, G. K.; Goeppert, A.; J. Am. Chem. Soc. 2011, 133, 12881; Cokoja, M.; ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... of monomer (NBE, NBD or/and DCPD) and 5 µL of EDA were added. The solution was stirred for different periods of time at 25 or 50 ± 1 °C in a silicon oil bath. At RT, ca. 5 mL of methanol were added and the polymer ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... The two pyrograms obtained when OA is adsorbed on both NiO/silica and NiO/alumina hardly show the presence of residual unconverted OA: the contact between the catalyst surface and the adsorbed OA allows a complete ... See full document
11
J. Braz. Chem. Soc. vol.25 número12
... Several studies have been performed in order to evaluate the influence of synthesis parameters, such as temperature and time of seed aging, crystallization temperature and gel composi[r] ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... Thus, it can be said that the higher reduction degree, metallic dispersion and metallic area of the catalyst, is expected a higher conversion of glycerol to the desired gaseous produc[r] ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... Robb, M. A.; Cheeseman, J. R.; Scalmani, G.; Barone, V.; Mennucci, B.; Petersson, G. A.; Nakatsuji, H.; Caricato, M.; Li, X.; Hratchian, H. P.; Izmaylov, A. F.; Bloino, J.; Zheng, G.; Sonnenberg, J. ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... propagation process, happened to the model with ethyl group regarding the α -agostic and β -agostic modes, the most stable resting state was the configuration with β -agostic mode a[r] ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... 18. Enache, D. I.; Edwards, J. K.; Landon, P.; Solsona-Espriu, B.; Carley, A. F.; Herzing, A. A.; Watanabe, M.; Kiely, C. J.; Knight, D. W.; Hutchings, G. J.; Science 2006, 311, 362. 19. Hong, S.; ... See full document
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J. Braz. Chem. Soc. vol.25 número12
... This manuscript investigates the role of the catalysis community on the growing interest for ILs; the case of the Brazilian community being specifically observed, including the contri[r] ... See full document
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