Browsing Exact and Earth Sciences by Author "Martinelli, Marcia"

Now showing items 1-4 of 4

    • An alternative process for hydrogenation of sunflower oil 

      Schneider, Rosana de Cassia de Souza; Lara, Luciano Roni Silva; Martinelli, Marcia (2010) [Journal article]
      Classic methodologies for hydrogenation of vegetable oils have traditionally been carried out by nickel catalysts under high pressure of H2 and high temperature. An alternative method for hydrogenation of sunflower oil ...

    • Antimicrobial activity of 1,4-naphthoquinones by metal complexation 

      Brandelli, Adriano; Bizani, Delmar; Martinelli, Marcia; Stefani, Valter; Gerbase, Annelise Engel (2004) [Journal article]
      O efeito da complexação com metais sobre a atividade antimicrobiana de 1,4-naftoquinonas foi investigado. Complexos contendo níquel, cromo, ferro, cobre e cobalto da 5-amino-8-hidroxi-1,4-naftoquinona (2) e seus acilderivados ...

    • Epoxidação do óleo de mamona e derivados empregando o sistema catalítico VO(acac)2/TBHP 

      Nunes, Marta Regina dos Santos; Martinelli, Marcia; Pedroso, Marcelo Monteiro (2008) [Journal article]
      The alternative system VO(acac)2/TBHP was investigated for the epoxidation reaction of castor oil and its derivatives. Results of 88% of conversion, 73% of epoxidation and 82% of selectivity were obtained for the system ...

    • Relato de uma experiência: recuperação e cadastramento de resíduos dos laboratórios de graduação do Instituto de Química da Universidade Federal do Rio Grande do Sul 

      Amaral, Suzana Trindade; Machado, Patricia Fernandes Lootens; Peralba, Maria do Carmo Ruaro; Camara, Maria Regina de Souza; Santos, Tatiana dos; Berleze, Ana Lucia; Falcão, Humberto Luciano; Martinelli, Marcia; Goncalves, Reinaldo Simoes; Oliveira, Eduardo Rolim de; Brasil, Jorge de Lima; Araujo, Marco Aurelio de; Borges, Antônio César de Amorim (2001) [Journal article]
      An experience aiming to promote a residue interchange and recovery between the teaching laboratories of the Chemistry Institute of this University is described. At the present, several residues interchange have already ...