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One-pot fungal biomass-to-biodiesel process: Influence of the molar ratio and the concentration of acid heterogenous catalyst on reaction yield and costs
(2021-09-15)
This work evaluates a microbial-based biodiesel production process through simultaneous esterification and transesterification of the lipid-rich fungal biomass using ethanol as both extractor and acyl acceptor. Two of the ...
Synthesis of chiral organotins suitable for the preparation of asymmetric heterogeneous catalysts
(John Wiley & Sons Ltd, 2005-04)
A key step in the preparation of asymmetric heterogeneous catalysts based on silica-supported rhodium and platinum chemically modified with chiral organotins, is the synthesis of optically pure tin derivatives. We report ...
Synthesis of two new Mo(II) organometallic catalysts immobilized on POSS for application in olefin oxidation reactions
(2017-01-01)
The purpose of this work was the preparation and characterization of two new catalysts POSS-ATZAc-[Mo(η3-C3H5)Br(CO)2] (POSS-Mo-I) and POSS-ATZAc-[Mo(CO)3Br2] (POSS-Mo-II). The new heterogeneous catalysts were characterized ...
XPS studies on the Cu(I,II)-polyampholyte heterogeneous catalyst: An insight into its structure and mechanism
(Elsevier Science, 2011-04-01)
A complex between Cu(II) and a polyampholyte synthesized from methacrylic acid, imidazole and ethyleneglycol diglycidyl ether was used as a heterogeneous catalyst for hydrogen peroxide activation and degradation of ...
Produção de catalisadores heterogêneos baseados em heteropoliácidos suportados em sílica para uso em reações de transesterificação
(Universidade Tecnológica Federal do ParanáCampo Mourao, 2013-10-03)
Biodiesel is a biofuel from renewable sources such as vegetable oils and animal fat, and has been proposed as an alternative to petroleum-derived diesel. Typically, this biofuel is obtained from soybean oil by transesterification ...
Ethylene polymerization using iron catalysts heterogenized in MCM-41
(Elsevier Science BvAmsterdamHolanda, 2004)
Catalysts based on clay and iron oxide for oxidation of toluene
(Elsevier Science BvAmsterdamHolanda, 2011)
Heterogeneous photo-fenton process using iron-modified regional clays as catalysts: Photonic and quantum efficiencies
(Springer Heidelberg, 2019-03)
A regional raw clay was used as the starting material to prepare iron-pillared clays with different iron contents. The catalytic activity of these materials was tested in the heterogeneous photo-Fenton process, applied to ...