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Browsing by Subject "Acidity"

Now showing items 1-10 of 10

Acidity and accessibility studies on mesoporous ITQ-4 zeolite

Verboekend, Danny; Villaescusa Alonso, Luis Angel; Thomas, Karine; Stan, Irina; Pérez-Ramírez, Javier (Elsevier, 2010-07-01)

[EN] Desilication of ITQ-4 (IFR code, 1-dimensional 12-MR channel system of 0.62 nm x 0.72 nm) in aqueous NaOH solutions was practiced in order to produce the zeolite in the hierarchical form, i.e. combining the native ...
Annulation of phenols with methylbutenol over MOFs: The role of catalyst structure and acid strength in producing 2,2-dimethylbenzopyran derivatives

Shamzhy, Mariya V.; Opanasenko, Maksym V.; García Gómez, Hermenegildo; Cejka, Jiri (Elsevier, 2015-01-15)

The catalytic behavior of metal-organic frameworks of different structures (Fe(BTC), MIL-100(Fe), MIL-100(Cr) and Cu-3(BTC)(2)) was investigated in annulation reaction between 2-methyl-3-buten-2-ol and phenols differing ...
Catalytic cracking performance of alkaline-treated zeolite Beta in the terms of acid sites properties and their accessibility

Tarach, K.; Gora-Marek, K.; Tekla, J.; Brylewska, K.; Datka, J.; Mlekodaj, K.; Makowski, W.; Igualada López, María Cristina; Martínez-Triguero, Joaquín; Rey Garcia, Fernando (Elsevier, 2014-04)

The zeolite Beta is considered as a promising additive for FCC catalyst in diesel oil production. In this article, it is shown that hierarchical zeolite Beta obtained by an optimized desilication procedure increases diesel ...
Evaluación de la aptitud a la frigoconservación de dos nuevas variedades de níspero cv Andrés y cv Ruchey

Gómez Carpio, Eva (Universitat Politècnica de València, 2019-11-12)

[ES] Con el fin de introducir nuevas variedades que permitan ampliar la gama varietal del níspero en el área mediterránea de producción, el IVIA en colaboración con la D.O. Nísperos Callosa d’En Sarrià cuenta con un ...
Inelastic neutron scattering study of Brønsted acidity in LTA zeolite

Lemishko, Tetiana (Universitat Politècnica de València, 2019-05-02)

[ES] En esta tesis se realiza un estudio de acidez de zeolita LTA con la relación Si/Al 5 y 40 utilizando la técnica de dispersión inelástica de neutrones (INS) en combinación con otras tecnicas como la modelización ...
Mechanistic insights into the Nb2O5 and niobium phosphate catalyzed in situ condensation of a fluorescent halochromic assembly

Impellizzeri, Stefania; Simoncelli, Sabrina; Fasciani, Chiara; Marín García, Mª Luisa; Hallett-Tapley, Geniece L.; Hodgson, Gregory K.; Scaiano, Juan C. (Royal Society of Chemistry, 2015)

[EN] Solid niobium oxides (Nb2O5 center dot nH(2)O) and niobium phosphate were used as heterogeneous acid catalysts to promote the condensation between a switchable oxazine and a fluorescent coumarin in an aprotic solvent. ...
Modulation of zeolite acidity by post-synthesis treatments in Mo/HZSM-5 catalysts for methane dehydroaromatization

Martinez Feliu, Agustin; Peris Chanzá, Ernesto José; Vidal Moya, José Alejandro (Elsevier, 2008)

The acid properties of HZSM-5 were modulated by treatment with acids (oxalic, citric, nitric), (NH(4))(2)SiF(6), steaming, steaming+acid, and partial exchange with Cs(+). Then, catalysts containing 3wt% Mo were prepared ...
RELACIÓN ENTRE LAS CONDICIONES AMBIENTALES Y LA MADURACIÓN INTERNA DEL FRUTO DE CITRUS SINENSIS CVS. M7 (MUTANTE) Y NAVELINA (PARENTAL)

Robledo Rodríguez, Pedro (Universitat Politècnica de València, 2018-12-17)

La maduración de los frutos cítricos depende de factores endógenos, relativos al genotipo, y de factores exógenos, relativos a las condiciones ambientales. La relación entre los factores ambientales, en particular la ...
Technological failures caused by cephalexin©in set-type sheep's milk yogurt

Noves, B.; Libran, C.; Licon, C. C.; Molina Pons, Mª Pilar; Molina Casanova, Ana; Berruga Fernandez, Maria Isabel (Taylor & Francis, 2015)

Given their broad spectrum, cephalosporins are used for combating mastitis in dairy species. Many cephalosporins, such as cephalexin, have not been authorized for use in lactating sheep and because veterinary drugs for use ...
Wild melon diversity in India (Punjab State)

Roy, Anamika; Bal, S. S.; Fergany, M.; Kaur, Sukhjeet; Singh, Hira; Malik, Ajaz A.; Singh, Jugpreet; Monforte Gilabert, Antonio José; Dhillon, N. P. S. (Springer Verlag (Germany), 2012-06)

We present here the first comprehensive genetic characterization of wild melon accessions from northern India. The genetic diversity among 43 wild melon accessions collected from the six agro-ecological regions of the ...