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1.
A. Alba M. A. Aramendia V. Borau C. Jimenez J. M. Marinas 《Reaction Kinetics and Catalysis Letters》1984,25(1-2):45-50
The reduction of ,-unsaturated (olefin) carbonyl compounds of the type using a 0.75 wt.% Pd catalyst supported on SiO2–AlPO4 (8020 w/w) in a Parr reactor at low hydrogen pressure is reported. Selectivity in the reduction of the C=C bond is 100% in every case, and the nature of the groups A and B affects reaction rate, thus suggesting a 1,4-hydrogen addition mechanism.
, - () , , 0,75 . % Pd, SiO2–AlPO4 (8020 /), . C=C 100% , A B , 1,4- .相似文献
2.
M. A. Aramendia V. Boráu C. Jimenez J. M. Marinas 《Reaction Kinetics and Catalysis Letters》1981,18(3-4):335-339
The synthesis and physicochemical properties of new metallic systems obtained by supporting Pd on colloidal AlPO4, AlPO4–SiO2 and AlPO4--Al2O3 to be used as reduction catalysts are reported. The catalytic activity of the above systems in the transfer reduction of nitrobenzene using cyclohexene as hydrogen donor has been measured.
, Pd AlPO4, AlPO4SiO2 AlPO4-Al2O3 . , .相似文献
3.
M. A. Aramendia V. Borau C. Jiménez J. M. Marinas M. E. Sempere F. J. Urbano 《Reaction Kinetics and Catalysis Letters》1990,41(1):141-146
Cyclohexene acts as a powerful hydrogen donor over supported Pd catalysts. On the basis of the theory of competitive hydrogenations, this paper aims at accounting for the fact that acrylamide cannot be reduced by hydrogen transfer using cyclohexene as donor, whereas methacrylamide can.
Pd. , , , .相似文献
4.
Torre-Fdez Imanol Aramendia Julene Gomez-Nubla Leticia Castro Kepa Maguregui Maite Fdez-Ortiz de Vallejuelo Silvia Arana Gorka Madariaga Juan M. 《Analytical and bioanalytical chemistry》2018,410(28):7477-7488
Analytical and Bioanalytical Chemistry - The application of a non-destructive analytical procedure to characterise the mineral phases in meteorites is a key issue in order to preserve this type of... 相似文献
5.
In this work, the optimal surfmer feeding profile for stabilizing a high-solid-content acrylic latex with a non-ionic alkenyl functional TMMaxemul 5011 was calculated. For this purpose, the model developed by de la Cal and Asua (J. Polym. Sci., Part A: Polym. Chem. 39 (2001) 585) was used. It was observed that, in spite of the low reactivity of the surfmer, it was possible to increase substantially the surfmer conversion using an optimal surfmer addition policy. To cite this article: E. Aramendia et al., C. R. Chimie 6 (2003). 相似文献
6.
Esteban Aramendia María J. Barandiaran Jos C. De La Cal Jo Grade Trevor Blease Jos M. Asua 《Journal of polymer science. Part A, Polymer chemistry》2004,42(17):4202-4211
The mechanisms by which a new nonionic alkenyl‐based surfmer (Maxemul 5011?) was involved in acrylic emulsion polymerization were investigated. No proof of homopolymerization or of chain transfer to surfmer was obtained under the conditions studied. The effect of the initiator type, feeding time of the surfmer, particle size of the seed, and surfmer concentration, on kinetics and surfmer incorporation showed that the surfmer reacted mainly by copolymerization with the monomers in the outer shell of the polymer particles. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 4202–4211, 2004 相似文献
7.
M. A. Aramendia M. S. Climent C. Jimenez J. M. Marinas 《Reaction Kinetics and Catalysis Letters》1980,14(4):489-493
The liquid phase reduction of different substituted nitrobenzene derivatives with the formic acid-triethylamine system has been carried out by the use of a supported palladium (0,6%) on AlPO4/SIO2 (20:80 weigth) catalyst. The reduction rate of nitrocompounds containing electron-acceptor substituents is much higher than that of electron donor-containing substrates.
, -, -Pd (0,6%) AlPO4/SiO2 (20:80 ). , , , , .相似文献
8.
Gómez-Nubla Leticia Aramendia Julene Fdez-Ortiz de Vallejuelo Silvia Castro Kepa Madariaga Juan Manuel 《Analytical and bioanalytical chemistry》2019,411(29):7869-7877
Analytical and Bioanalytical Chemistry - Libyan Desert Glasses (LDGs) and Darwin Glasses (DGs) are impact glasses produced by the impact of an extraterrestrial body into the Earth million years... 相似文献
9.
Pedro F. Aramendia Robert W. Redmond Santiago Nonell Wolfang Schuster Silvia E. Braslavsky Kurt Schaffner Emanuel Vogel 《Photochemistry and photobiology》1986,44(5):555-559
Porphycene and a tetra-n-propyl derivative remained unaltered on irradiation in toluene at room temperature. Quantum yields of fluorescence, S T intersystem crossing, and singlet molecular oxygen sensitization, as well as lifetimes of the singlet and triplet excited states were measured. In view of their structural relationship to porphyrin, their high absorption above 620 nm, their stability towards photooxidation, and their high quantum yields of fluorescence and singlet oxygen sensitization, these compounds qualify as potential agents for tumor marking and photodynamic therapy. 相似文献
10.
M. A. Aramendia V. Borau J. F. Gomez C. Jimenez J. M. Marinas 《Reaction Kinetics and Catalysis Letters》1986,30(2):337-344
In this work we have carried out a study on the liquid phase hydrogenation of benzylideneaniline, using dihydrogen over various supported Pd catalysts. Benzyl-ideneaniline reduction can be classified as insensitive to the catalyst structure. On the other hand, no compensating effect has been observed in performing the reaction over different supported Pd catalysts.
Pd , . . Pd , .相似文献