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Dive into the research topics where Daniel Thiele is active.

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Featured researches published by Daniel Thiele.


Química Nova | 2005

Evidências da formação de monocamada de óxido de alumínio sobre sílica, através de reações de enxerto

Julia Maria Diaz Cónsul; Ione Maluf Baibich; Edilson Valmir Benvenutti; Daniel Thiele

Aluminum oxide was dispersed on a commercial silica gel surface, using successive grafting reactions. The reaction products were characterized by N2 adsorption-desorption isotherms, scanning electron microscopy and infrared spectroscopy. The progressive incorporation of aluminum, up to 5.5% (w/w), does not produce agglomeration of alumina, since changes in the original pore size distribution of the silica matrix were not observed. The aluminum oxide covers homogeneously the silica surface.


Química Nova | 2004

DECOMPOSIÇÃO CATALÍTICA DE ÓXIDOS DE NITROGÊNIO

Julia Maria Diaz Cónsul; Daniel Thiele; Renato Cataluña Veses; Ione Maluf Baibich; Rogério Marcos Dallago

Contaminant gases in the atmosphere constitute an important problem to be solved in the world. The NOx gases produced as a consequence of engine high temperatures are deleterious to environment and human health, as they promote acid rain and can act in the same way as freons in the destruction of the ozone layer in the stratosphere. In this review, three way and selective reduction catalysts for decomposition of these contaminant gases are described. Details about conditions and problems, such as catalyst poisoning, and the search for new catalysts are shown.


Journal of the Brazilian Chemical Society | 2004

Selective reduction of NOx by propylene over silver catalyst under oxidative conditions

Julia Maria Diaz Cónsul; Daniel Thiele; Ione Maluf Baibich; Renato Cataluña Veses

Neste trabalho foram estudados catalisadores Ag/Al2O3 e Ag/Al2O3/Corderita, preparados por um metodo de impregnacao convencional, na reacao de reducao de NO utilizando propeno como agente redutor. Os catalisadores foram caracterizados por reducao a temperatura programada (RTP), quimissorcao de oxigenio e area superficial, pelo metodo BET. A atividade catalitica foi determinada utilizando uma mistura reacional contendo 100 ppm de NO, 250 ppm de C3H6 e 2% de oxigenio e uma velocidade espacial de 100000 h-1. Os produtos da reacao foram estudados por FTIR. Os resultados dos testes cataliticos mostraram 56% de conversao de NO para o catalisador 2,22%Ag/Al2O3 a 723 K. Os catalisadores de cordierita apresentaram um comportamento semelhante, mas a temperatura de maxima conversao de NO deslocou-se para temperaturas menores.


Journal of Molecular Catalysis A-chemical | 2007

The role of aluminum species in biphasic butene dimerization catalyzed by nickel complexes

Daniel Thiele; Roberto Fernando de Souza


Applied Catalysis A-general | 2013

Ethylene oligomerization using nickel-β-diimine hybrid xerogels produced by the sol–gel process

Enéderson Rossetto; Marcela Caovilla; Daniel Thiele; Roberto Fernando de Souza; Katia Bernardo-Gusmão


Journal of Molecular Catalysis A-chemical | 2007

Nickel-catalyzed propylene dimerization in organochloroaluminate ionic liquids: Control of the isomerization reaction

Roberto Fernando de Souza; Bárbara C. Leal; Michele Oberson de Souza; Daniel Thiele


Journal of Molecular Catalysis A-chemical | 2011

Biphasic ethylene oligomerization using bis(imino)pyridine cobalt complexes in methyl-butylimidazolium organochloroaluminate ionic liquids

Daniel Thiele; Roberto Fernando de Souza


Journal of Catalysis | 2006

Effect of phosphine–CS2 adducts on the nickel-catalyzed butenes oligomerization in organochloroaluminate imidazolium ionic liquids

Roberto Fernando de Souza; Daniel Thiele; Adriano L. Monteiro


Catalysis Letters | 2010

Oligomerization of Ethylene Catalyzed by Iron and Cobalt in Organoaluminate Dialkylimidazolium Ionic Liquids

Daniel Thiele; Roberto Fernando de Souza


Catalysis Communications | 2017

Cobalt-β-diimine complexes for ethylene oligomerization

Marcela Caovilla; Daniel Thiele; Roberto Fernando de Souza; José Ribeiro Gregório; Katia Bernardo-Gusmão

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Roberto Fernando de Souza

Universidade Federal do Rio Grande do Sul

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Ione Maluf Baibich

Universidade Federal do Rio Grande do Sul

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Julia Maria Diaz Cónsul

Universidade Federal do Rio Grande do Sul

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Renato Cataluña Veses

Universidade Federal do Rio Grande do Sul

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Katia Bernardo-Gusmão

Universidade Federal do Rio Grande do Sul

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Bárbara C. Leal

Universidade Federal do Rio Grande do Sul

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Marcela Caovilla

Universidade Federal do Rio Grande do Sul

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Michele Oberson de Souza

Universidade Federal do Rio Grande do Sul

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Rogério Marcos Dallago

Universidade Federal do Rio Grande do Sul

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Adriano L. Monteiro

Universidade Federal do Rio Grande do Sul

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