Silvana I. Wolke

Universidade Federal do Rio Grande do Sul

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Neftalí Lênin Villarreal Carreño

Universidade Federal de Pelotas

Regina Buffon

Universidade Estadual de Campinas (UNICAMP)

Ricardo Gomes da Rosa

Universidade Federal do Rio Grande do Sul

Andrés Mansilla

Universidad de Magallanes

Oscar Giordani Paniz

Brazilian Agricultural Research Corporation

Adriano L. Monteiro

Universidade Federal do Rio Grande do Sul

Arthur A. Bernardes

Braskem (Brazil)

Cláudio M. P. Pereira

Universidade Federal de Pelotas

Sabrina M. Nobre

Universidade Federal do Rio Grande

Adalto Bianchini

Universidade Federal do Rio Grande

Cooperative Institutions

Universidade Federal do Rio Grande do Sul

Universidade Federal do Rio Grande

Universidade Federal de Pelotas

University of Rio Grande and Rio Grande Community College

Universidade Federal de São Carlos

McMaster University

Universidade Estadual de Campinas (UNICAMP)

Universidade de São Paulo

Brazilian National Association of Graduate Programs in Communication

Universidade Federal de Santa Maria

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On the interaction of Schrock Mo–alkylidene complexes with the surface of inorganic oxides

Journal of Molecular Catalysis A Chemical (2000)

Silvana I. Wolke Regina Buffon

Norbornene

ROMP

Reactivity

10.1016/s1381-1169(00)00245-4

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Citations (22)

Simple and Efficient Protocol for Catalyst Recycling and Product Recovery in the Pd‐Catalyzed Homogeneous Suzuki Reaction.

ChemInform (2004)

Sabrina M. Nobre Silvana I. Wolke Ricardo Gomes da Rosa Adriano L. Monteiro

Abstract For Abstract see ChemInform Abstract in Full Text.

Homogeneous Catalysis

Reaction conditions

10.1002/chin.200448091

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Citations (0)

The Role of Pd Nanoparticles in Ionic Liquid in the Heck Reaction

Journal of the American Chemical Society (2005)

Claúdia C. Cassol Alexandre P. Umpierre Giovanna Machado Silvana I. Wolke Jaı̈rton Dupont

Pd(0) nanoparticles with approximately 2 nm diameter, immobilized in 1-n-butyl-3-methylimidazolium hexafluorophosphate ionic liquid, are efficient catalyst precursors for coupling of aryl halides with n-butylacrylate. In situ TEM analysis of the ionic liquid catalytic solution after the catalytic reaction shows the formation of larger nanoparticles ( approximately 6 nm). The palladium content in the organic phase during the arylation reaction was checked by ICP-AS and shows significant metal leaching (up 34%) from the ionic phase to the organic phase at low substrate conversions and drops to 5-8% leaching at higher conversions. These results strongly suggest that the Pd(0) nanoparticles serve as a reservoir of "homogeneous" catalytic active species.

Heck Reaction

10.1021/ja0430043

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Citations (376)

From banana stem to conductive paper: A capacitive electrode and gas sensor

Sensors and Actuators B Chemical (2016)

Bruno S. Noremberg Ricardo Marques e Silva Oscar Giordani Paniz José Henrique Alano Margarete Regina Freitas Gonçalves

10.1016/j.snb.2016.09.014

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Citations (25)

Recyclable rhodium-Cp′-heterogenized catalysts for hydrogenation of olefins

Journal of Catalysis (2018)

Fernanda Rosi Soares Pederzolli Silvana I. Wolke Ricardo Gomes da Rosa

Fumed silica

10.1016/j.jcat.2018.02.007

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Citations (10)

Materiais SiO2-TiO2 para a degradação fotocatalítica de diuron

Química Nova (2011)

Arthur A. Bernardes Maria Carolina S. Bulhosa Fábio Ferreira Gonçalves Marcelo G. Montes D’Oca Silvana I. Wolke

SiO 2 -TiO 2 MATERIALS FOR DIURON PHOTOCATALYTIC DEGRADATION.SiO 2 -TiO 2 materials prepared by sol-gel method were evaluated in the photocatalytic degradation of diuron.The materials were prepared with and without surfactant cetyltrimethylammonium chloride at different temperatures (25, 50 and 100 o C).The samples were characterized by N 2 adsorptiondesorption measurements, scanning electron microscopy, X-ray diffraction, ultraviolet-visible diffuse reflectance spectroscopy and infrared diffuse reflectance spectroscopy.The results showed that the materials synthesized with the surfactant had higher surface areas and band-gap values similar to anatase.All materials were more active than the commercial catalyst P-25 and better performance was achieved using the surfactant in the material synthesis.

Diffuse reflection

10.1590/s0100-40422011000800009

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Citations (7)

Simple and efficient protocol for catalyst recycling and product recovery in the Pd-catalyzed homogeneous Suzuki reaction

Tetrahedron Letters (2004)

Sabrina M. Nobre Silvana I. Wolke Ricardo Gomes da Rosa Adriano L. Monteiro

Heptane

Suzuki reaction

Coupling reaction

Aryl halide

10.1016/j.tetlet.2004.04.198