Chemistry

Enzymatic synthesis of biolubricants from by-product of soybean oil processing catalyzed by different biocatalysts of Candida rugosa lipase

Authors: Fernandes, KV; Cavalcanti, EDC; Cipolatti, EP; Aguieiras, ECG; Pinto, MCC; Tavares, FA; da Silva, PR; Fernandez-Lafuente, R; Arana-Pena, S; Pinto, JC; Assuncao, CLB; da Silva, JAC; Freire, DMG

Article.
Catal. Today. vol: 362. page: 0920-5861.
Date: feb-15. 2021.
Doi: 10.1016/j.cattod.2020.03.060.

Abstract:
The present work studied the synthesis of biolubricants from by-products of soybean oil processing using the lipase from Candida rugosa [read more]

Immobilization of lipases via interfacial activation on hydrophobic supports: Production of biocatalysts libraries by altering the immobilization conditions

Authors: Arana-Pena, S; Rios, NS; Carballares, D; Goncalves, LRB; Fernandez-Lafuente, R

Article.
Catal. Today. vol: 362. page: 0920-5861.
Date: feb-15. 2021.
Doi: 10.1016/j.cattod.2020.03.059.

Abstract:
Lipases A and B from Candida antarctica (CALA, CALB), and those from Candida rugosa (CRL) and Rhizomucor miehei (RML) have been immobilized on octyl agarose beads under 16 different conditions. The activities of the biocatalysts versus different substrates [read more]

Polyaniline supported CdS/CeO2/Ag3PO4 nanocomposite: An “A-B” type tandem n-n heterojunctions with enhanced photocatalytic activity

Authors: Taddesse, AM; Bekele, T; Diaz, I; Adgo, A

Article.
J. Photochem. Photobiol. A-Chem.. vol: 406. page: 1010-6030.
Date: feb-01. 2021.
Doi: 10.1016/j.jphotochem.2020.113005.

Abstract:
In the present work, ternary composites of the form CdS/CeO2/Ag3PO4 with CdS:CeO2/Ag3PO4 molar ratios of (1:1, 2:1, 3:1 and 4:1) were synthesized by co-precipitation method. Polyaniline supported CdS/CeO2/Ag3PO4 nanocomposite was also synthesized by “in situ” chemical oxidative method. [read more]

2021-01-20T11:06:50+01:00Categories: Publications 2021|Tags: , |

Synthesis and Characterization of ZnAPO-34 and SAPO-34: Effect of Zn on the Acidity and Catalytic Activity in the MTO Reaction

Authors: Ruiz, MG; Pliego, JA; Alvarez, CM; Casas, MG; de Andres, ES

Article.
J. Mex. Chem. Soc.. vol: 65. page: 1870-249X.
Date: . 2021.
Doi: 10.29356/jmcs.v65i1.1261.

Abstract:
SAPO-34 and ZnAPO-34 materials (Zn incorporated by isomorphic substitution in AlPO-34 material) were synthesized by hydrothermal synthesis using triethylamine (TEA) as the structure directing agent (SDA). The structure presented by both materials is isomorphic to [read more]

2021-01-28T10:35:26+01:00Categories: Publications 2021|Tags: , |

Preferential Oxidation of CO over CoFe2O4 and M/CoFe2O4 (M = Ce, Co, Cu or Zr) Catalysts

Authors: Bejaoui, M; Elmhamdi, A; Pascual, L; Perez-Bailac, P; Nahdi, K; Martinez-Arias, A

Article.
Catalysts. vol: 11. page: .
Date: JAN. 2021.
Doi: 10.3390/catal11010015.

Abstract:
CoFe2O4 prepared by sol-gel has been examined with respect to its catalytic performance for preferential CO oxidation in a H-2-rich stream. In turn, the promoting effects of incorporation of Ce, Co, Cu, and Zr by impregnation on [read more]

2021-02-11T09:04:57+01:00Categories: Publications 2021|Tags: , |

Oxidation of 5-Hydroxymethylfurfural on Supported Ag, Au, Pd and Bimetallic Pd-Au Catalysts: Effect of the Support

Authors: German, D; Pakrieva, E; Kolobova, E; Carabineiro, SAC; Stucchi, M; Villa, A; Prati, L; Bogdanchikova, N; Corberan, VC; Pestryakov, A

Article.
Catalysts. vol: 11. page: .
Date: JAN. 2021.
Doi: 10.3390/catal11010115.

Abstract:
Oxidation of 5-hydroxymethylfurfural (HMF), a major feedstock derived from waste/fresh biomass, into 2,5-furandicarboxylic acid (FDCA) is an important transformation for the production of biodegradable plastics. Herein, we investigated the [read more]

2021-02-11T09:14:32+01:00Categories: Publications 2021|Tags: , |

Structure-direction towards the new large pore zeolite NUD-3

Authors: Chen, FJ; Gao, ZHR; Li, J; Gomez-Hortiguela, L; Lin, C; Xu, L; Du, HB; Marquez-alvarez, C; Sun, JL; Camblor, MA

Article.
Chem. Commun.. vol: 57. page: 1359-7345.
Date: JAN 7. 2021.
Doi: 10.1039/d0cc07333d.

Abstract:
The new zeolite NUD-3 possesses a three-dimensional system of large pore channels that is topologically identical to those of ITQ-21 and PKU-14. However, the three zeolites have [read more]

2021-02-11T09:20:24+01:00Categories: Publications 2021|Tags: , |

Exploring the alternative MnO-Na2CO3 thermochemical cycle for water splitting

Authors: Bayon, A; O’Shea, VAD; Serrano, DP; Coronado, JM

Article.
J. CO2 Util.. vol: 42. page: 2212-9820.
Date: DEC. 2020.
Doi: 10.1016/j.jcou.2020.101264.

Abstract:
Thermochemical cycles for H2O and CO2 splitting using CeO2 have demonstrated high efficiency (> 5%) and fast kinetics. Alternative multistage cycles based on stoichiometric oxides, such as Mn-Na, can potentially provide much larger efficiencies under less stringent operation conditions. [read more]

SBA-15 with short channels for laccase immobilization

Authors: Khanmohammadi, F; Molina, MA; Blanco, RM; Azizi, SN; Marquez-Alvarez, C; Diaz, I

Article.
Microporous Mesoporous Mat.. vol: 309. page: 1387-1811.
Date: DEC 15. 2020.
Doi: 10.1016/j.micromeso.2020.110527.

Abstract:
Ordered Mesoporous Materials offer wide application areas in chemistry and biotechnology. SBA-15 displays hexagonal arrangement of parallel unidirectional channels, where pore size and particle morphology are the controlling parameters when used as enzyme support [read more]

Arylative Allenol Cyclization via Sequential One-pot Enzyme & Palladium Catalysis

Authors: Naapuri, JM; Aberg, GA; Palomo, JM; Deska, J

Article; Early Access.
ChemCatChem. vol: . page: 1867-3880.
Date: . 03 December 2020
Doi: 10.1002/cctc.202001619.

Abstract:
The one-pot combination of halogenation biocatalysis and Suzuki-type cross coupling enables the direct arylative cyclization of allenic alcohols with boronic acids. This modular approach to unsaturated five-membered O-heterocycles proceeds in an aqueous emulsion with air as [read more]

2020-12-26T19:55:47+01:00Categories: Publications 2020|Tags: , |

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