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Investigación de sitios ácidos del heteropoliácido de Wells Dawson por adsorción de piridina
(Asociación Química Argentina, 2019-06)
El objetivo de esta investigación fue estudiar la interacción de la piridina con el ácido fosfotúngstico de Wells Dawson H6P2W18O62.13H2O másico con el fin de determinar la naturaleza y número de sitios ácidos Brönsted y ...
Heteropoliácidos como catalisadores em reações de hidrólise de celulose
(UNIVERSIDADE FEDERAL DE LAVRASDQI - Programa de Pós-graduaçãoUFLABRASIL, 2013)
Métodos para remoção de enxofre de (Bio) combustíveis: dessulfurização oxidativa de gasolina sintética e remoção de H2S de biogás proveniente de suinoculturaMethods for sulfur removal of (bio) fuels: oxidative desulphurization of synthetic gasoline and biogas H2S removal coming from hogs
(Universidade Federal de Viçosa, 2016)
Selectivity of the cyclic carbonate formation by fixation of carbon dioxide into epoxides catalyzed by Lewis bases
(Pergamon-Elsevier B.V. Ltd, 2008-11-24)
Cyclic carbonate and polycarbonate have been selectively obtained with good conversion by coupling carbon dioxide with diglycidylether of bisphenol A. The ruthenium trichloride supported on tetraethylammonium bromide and ...
Selectivity of the cyclic carbonate formation by fixation of carbon dioxide into epoxides catalyzed by Lewis bases
(Pergamon-Elsevier B.V. Ltd, 2008-11-24)
Cyclic carbonate and polycarbonate have been selectively obtained with good conversion by coupling carbon dioxide with diglycidylether of bisphenol A. The ruthenium trichloride supported on tetraethylammonium bromide and ...
Desulfuración oxidativa catalítica de 2,4-dimetil dibenzotiofeno utilizando ácido fosfotúngstico soportado sobre óxidos de Al₂O₃, V₂O₅ y ZrO₂
(Universidad Autónoma Metropolitana (México). Unidad Azcapotzalco. División de Ciencias Básicas e Ingeniería., 2022)
Este trabajo reporta la síntesis, caracterización y prueba catalítica de ZrO₂, V₂O₅ y Al₂O₃ que han sido cargados con 2 cantidades de heteropoliácido H₃PW₁₂O₄₀ para la desulfuración oxidativa catalítica de 4,6-dimetil ...
Polyvinyl alcohol-polyethylenglycol blends with tungstophosphoric acid addition: Synthesis and characterization
(Elsevier Science Sa, 2008-04)
New materials, based on a Keggin-structured compound (tungstophosphoric acid) immobilized in a polymeric matrix formed by a blend of polyvinyl alcohol and polyethylenglycol with 400, 2000, and 6000 Da molecular weight, ...
Ecofriendly ketalization of isatin using heteropolycompounds as catalysts
(2008)
The dioxolane ketals of isatin and 5-chloroisatin were prepared using an efficient and cleaner procedure than the usual synthetic routes. Keggin heteropolyacids, namely, heteropolyphosphotungstic acid (HPW),
HPW/SiO2 and ...
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 ...