Química

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http://repositorio.ufes.br/handle/10/17500
Programa de Pós-Graduação em Química

Centro: CCE
Telefone: (27) 4009 2909
URL do programa: http://www.quimica.vitoria.ufes.br

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Navegando Química por Autor "Amorim, Ivan Henrique Silva"

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    Estudo de condições da síntese para a obtenção da rede metalorgânica de Cu2+ contendo o ligante ácido 1,3,5-benzenotricarboxílico
    (Universidade Federal do Espírito Santo, 2017-04-11) Amorim, Ivan Henrique Silva; Luz, Priscilla Paiva; Takahashi, Pedro Mitsuo; Borges, Alex dos Santos
    At the present work was evaluated the influence of Cu2+ salts counterions (acetate and chloride) and the synthesis conditions (temperature, time and concentration) on the reaction yield of MOF-199, a well-known metalorganic framework. Therefore, a factorial design was performed for this purpose in which three synthesis parameters were analyzed: temperature, time and Cu2+ concentration, varying in two levels (minimum and maximum), resulting in a combinatorial analysis, where each experiment consisted in a different configuration of the factors at their respective levels, which led to a batch of 23 = 8 experiments, for each counterion. Syntheses with average values of each reaction parameter were also performed, totalizing 9 syntheses for each counterion. The reaction product yield was the factorial design response variable. The products were characterized by infrared vibrational absorption spectroscopy, thermogravimetric analysis and powder X-ray diffraction. Analytical techniques confirmed the production of MOF-199. The temperature for syntheses with Cu2+ chloride was the only significant variable on the reaction yields. The syntheses carried out with Cu2+ acetate provided higher yields compared to Cu2+ chloride, however the synthesis conditions were not significant.