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Browsing by Author "Corma Canós, Avelino"

Now showing items 1-20 of 487

"Ab initio" synthesis of zeolites for preestablished catalytic reactions

Gallego-Sánchez, Eva María; Portilla Ovejero, Mª Teresa; Paris-Carrizo, Cecilia Gertrudis; Leon Escamilla, Efigenio Alejandro; Boronat Zaragoza, Mercedes; Moliner Marin, Manuel; Corma Canós, Avelino (American Association for the Advancement of Science (AAAS), 2017)

[EN] Unlike homogeneous catalysts that are often designed for particular reactions, zeolites are heterogeneous catalysts that are explored and optimized in a heuristic fashion. We present a methodol. for synthesizing ...
185 Nm Photoreduction of CO2 to methane by water. Influence of the Presence of a Basic catalyst

Sastre Calabuig, Francesc; Corma Canós, Avelino; García Gómez, Hermenegildo (American Chemical Society, 2012-08-29)

Photolysis of CO2 at 185 nm using a Hg lamp in the presence of H-2 or H2O leads to the formation of CH4 (after an induction period) and a lesser amount of CO. Using H-2 gas as reducing agent, up to 40% conversion was ...
A Bifunctional Metal/Acid Catalyst for One-Pot Multistep Synthesis of Pharmaceuticals

López Prado, Mª Victoria; Sabater Picot, Mª José; Corma Canós, Avelino (Pleiades Publishing, 2020-04)

[EN] One inhibitor of the fatty acid transporter FATP4 was synthesized in a three steps one-pot process in the presence of a bifunctional metal/acid catalyst. This molecule which has potential interest for the treatment ...
A bifunctional palladium-acid solid catalyst performs the direct synthesis of cyclohexylanilines and dicyclohexylamines from nitrobenzenes

Rubio Marqués, Paula; Leyva Perez, Antonio; Corma Canós, Avelino (Royal Society of Chemistry, 2013)

[EN] Nitroderivatives are transformed to cyclohexylanilines at room temperature in good yields and selectivity via a hydrogenation-amine coupling cascade reaction using Pd nanoparticles on carbon as a catalyst and a Bronsted acid.
A heterogeneous mechanism for the catalytic decomposition of hydroperoxides and oxidation of alkanes over CeO2 nanoparticles: A combined theoretical and experimental study

López Auséns, Javier Tirso; Boronat Zaragoza, Mercedes; Concepción Heydorn, Patricia; Chouzier, Sandra; Mastroianni, Sergio; Corma Canós, Avelino (Elsevier, 2016)

[EN] A nanoparticulate CeO2 catalyst is presented that is able to oxidize cyclohexane to K/A-oil (a mixture of cyclohexanone and cyclohexanol) using hydroperoxides as oxidizing species. The improvement in selectivity with ...
A Lamellar MWW Zeolite With Silicon and Niobium Oxide Pillars: A Catalyst for the Oxidation of Volatile Organic Compounds

Schwanke, Anderson Joel; Balzer, Rosana; Lopes, Christian Wittee; Meira, Debora Motta; DÍAZ MORALES, URBANO MANUEL; Corma Canós, Avelino; Pergher, Sibele (John Wiley & Sons, 2020-08-17)

[EN] In this work, an MWW-type zeolite with pillars containing silicon and niobium oxide was synthesized to obtain a hierarchical zeolite. The effect of niobium insertion in the pillaring process was determined by combining ...
A Ligand-Free Pt3 Cluster Catalyzes the Markovnikov Hydrosilylation of Alkynes with up to 106 Turnover Frequencies

Rivero-Crespo, Miguel Ángel; Leyva Perez, Antonio; Corma Canós, Avelino (John Wiley & Sons, 2017)

[EN] The Pt-catalyzed hydrosilylation of alkynes is the procedure of choice to obtain vinylsilanes, and is claimed to be the most relevant application of Pt in organic synthesis. More than half a century after its discovery, ...
A Machine Learning Approach to Zeolite Synthesis Enabled by Automatic Literature Data Extraction

Jensen, Zach; Kim, Edward; Kwon, Soonhyoung; Gani, Terry Z.H.; Román-Leshkov, Yuriy; Moliner Marin, Manuel; Corma Canós, Avelino; Olivetti, Elsa (American Chemical Society, 2019-05-22)

[EN] Zeolites are porous, aluminosilicate materials with many industrial and "green" applications. Despite their industrial relevance, many aspects of zeolite synthesis remain poorly understood requiring costly trial and ...
A New Aluminosilicate Molecular Sieve with a System of Pores between Those of ZSM-5 and Beta Zeolite

Moliner Marin, Manuel; Gonzalez, Jorge; Portilla Ovejero, Mª Teresa; Willhammar, Tom; Rey Garcia, Fernando; Llopis Alonso, Francisco Javier; Zou, Xiaodong; Corma Canós, Avelino (American Chemical Society, 2011-06)

[EN] A new aluminosilicate zeolite (ITQ-39) has been synthesized. This is an extensively faulted structure with very small domains that makes the structure elucidation very difficult. However, a combination of adsorption ...
A new microporous zeolitic silicoborate (ITQ-52) with interconnected small and medium pores

Simancas Coloma, Raquel; Jorda Moret, Jose Luis; Rey Garcia, Fernando; Corma Canós, Avelino; Cantin Sanz, Angel; Peral, Inmaculada; Popescu, Catalin (American Chemical Society, 2014-03-05)

A new zeolite (named as ITQ-52) having large cavities and small and medium channels has been synthesized. This was achieved by using a new family of amino-phosphonium cations as organic structure directing agents (OSDA). ...
A new molecular pathway allows the chemoselective reduction of nitroaromatics on non-noble metal catalysts

Millán-Cabrera, Reisel; Liu, Lichen; Boronat Zaragoza, Mercedes; Corma Canós, Avelino (Elsevier, 2018-08)

[EN] At difference with noble metals, the oxophylic character of non-noble metals strongly facilitates the rupture of the N-O bonds in nitrobenzene, yielding nitrosobenzene as primary reaction intermediate. By combining ...
A new photochemical based route for the preparation of organic structure directing agents useful for zeolite synthesis

Cantin Sanz, Angel; Leiva Herrero, Sandra; Jorda Moret, Jose Luis; Valencia Valencia, Susana; Rey Garcia, Fernando; Corma Canós, Avelino (Elsevier, 2007)

[EN] A new photochemically induced [2+2] cycloaddition route for the synthesis of amines has been successfully applied for the preparation of a series of organic structure directing agents (OSDA's) that has been found to ...
A New Synthesis Route of the Tridirectional 12 Ring Channel Zeolite ITQ-7

Cantin Sanz, Angel; Corma Canós, Avelino; Díaz Cabañas, Mª José; Rey Garcia, Fernando; Sastre Navarro, German Ignacio (Elsevier, 2004)

[EN] A new synthesis procedure for the synthesis of ITQ-7 zeolites is reported that has been afforded by combining theoretical and experimental approaches. This new synthesis method is specially relevant since the earlier ...
A priori control of zeolite phase competition and intergrowth with high-throughput simulations

Schwalbe-Koda, Daniel; Kwon, Soonhyoung; Paris, Cecilia; Bello-Jurado, Estefanía; Jensen, Zach; Olivetti, Elsa; Willhammar, Tom; Corma Canós, Avelino; Román-Leshkov, Yuriy; Moliner Marin, Manuel; Gomez-Bombarelli, Rafael (American Association for the Advancement of Science (AAAS), 2021-10-15)

[EN] Zeolites are versatile catalysts and molecular sieves with large topological diversity, but managing phase competition in zeolite synthesis is an empirical, labor-intensive task. In this work, we controlled phase ...
A promising camptothecin derivative: Semisynthesis, antitumor activity and intestinal permeability

Rodríguez Berna, Guillermo; Mangas Sanjuan, Victor; Gonzalez Alvarez, Marta; Gonzalez Álvarez, Isabel; Garcia Gimenez, Jose Luis; Díaz Cabañas, Mª José; Bermejo, Marival; Corma Canós, Avelino (Elsevier, 2014-08-18)

Oral administration of camptothecin (Cm) derivatives and other antitumoral agents is being actively developed in order to improve the quality of life of patients with cancer. Though several lipophilic derivatives of CPT ...
A reciclable bifuctional acid-base organocatalyst with ionic liquid character. The role of sites separation and spatial configuration on different condensation reaction

Corma Canós, Avelino; Boronat Zaragoza, Mercedes; Climent Olmedo, María José; Iborra Chornet, Sara; Montón Molina, Raquel; Sabater Picot, Mª José (Royal Society of Chemistry, 2011)

A series of bifunctional organic catalysts containing acid and basic sites with ionic liquid characteristics have been prepared and their catalytic activity and reaction coordinate for aldol and Knoevenagel condensations ...
A residue-free production of biaryls using supported gold nanoparticles

Serna Merino, Pedro Manuel; Corma Canós, Avelino (Elsevier, 2014-06)

[EN] Small gold nanoparticles in the presence of O2 are able to cleave CAH bonds of non-activated arenes and facilitate catalytic formation of biaryls under mild conditions. This procedure avoids the common requirement ...
A study of different supports for the catalytic reduction of nitrates from natural water with a continuous reactor

Franch Martí, Cristina; Palomares Gimeno, Antonio Eduardo; Corma Canós, Avelino (Elsevier, 2011-08-25)

[EN] The aim of this work is to study the activity for the nitrate catalytic reduction in natural water, using a continuous stirred tank reactor, of Pd/Cu and Pd/Sn catalysts supported on different materials. The ...
Accelerated crystallization of zeolites via hydroxyl free radicals

Feng, G.; Cheng, P; Yan, W.; Boronat Zaragoza, Mercedes; Li, X; Su, J.; Wang, J.; Li, Y.; Corma Canós, Avelino; Xu, R; Yu, J. (American Association for the Advancement of Science (AAAS), 2016)

[EN] In the hydrothermal crystallization of zeolites from basic media, hydroxide ions (OH-) catalyze the depolymerization of the aluminosilicate gel by breaking the Si, Al-O-Si, Al bonds and catalyze the polymerization of ...
Activation and conversion of alkanes in the confined space of zeolite-type materials

Del Campo Huertas, Pablo; Martínez, Cristina; Corma Canós, Avelino (The Royal Society of Chemistry, 2021-08-07)

[EN] Microporous zeolite-type materials, with crystalline porous structures formed by well-defined channels and cages of molecular dimensions, have been widely employed as heterogeneous catalysts since the early 1960s, due ...