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Mostrando ítems 11-20 de 2000
Preparation of different basic Si-MCM-41 catalysts and application in the Knoevenagel and Claisen-Schmidt condensation reactions
(Academic Press Inc. Elsevier B.V., 2010-05-04)
In the present work, the basicity of three different Si-MCM-41 mesoporous materials, namely, (1) as-synthesized Si-MCM-41, (2) Si-MCM-41 modified by dispersing cesium oxide (Cs(2)O) and (3) Si-MCM-41 with anchored ...
Preparation of different basic Si-MCM-41 catalysts and application in the Knoevenagel and Claisen-Schmidt condensation reactions
(Academic Press Inc. Elsevier B.V., 2010-05-04)
In the present work, the basicity of three different Si-MCM-41 mesoporous materials, namely, (1) as-synthesized Si-MCM-41, (2) Si-MCM-41 modified by dispersing cesium oxide (Cs(2)O) and (3) Si-MCM-41 with anchored ...
Comparative study of the minichromosome maintenance proteins complex (MCM 4/5/6) in ameloblastoma and unicystic ameloblastoma
(Sage Publications, 2018)
Introduction. Solid/conventional ameloblastoma (AM) and unicystic ameloblastoma (UAM) are the most frequent benign epithelial odontogenic tumors located in the maxillary region, and their treatment usually consists of ...
Síntese da sílica MCM-41 usando um surfactante catiônico polimerizável e avaliação na transesterificação catalítica
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQ, 2014-02-20)
The masters work presented is result of a great effort provided by the group, which has worked with changes in the synthesis of CTA-MCM-41. The synthesis of the M41S family (composed of mesoporous silica MCM-41, MCM-48 and ...
Influence of hydrogel aging temperature in the formation of mesoporous molecular sieve MCM-48
(Associação Sergipana de Ciências, 2014)
Silylation of [Nb]-MCM-41 as an efficient tool to improve epoxidation activity and selectivity
(Academic Press Inc Elsevier ScienceSan DiegoEUA, 2006)
Síntese e caracterização de materiais nanoporosos para pirólise catalítica de óleos pesados
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em QuímicaFísico-Química; Química, 2008-12-22)
The present work reports the study of nanoporous structures, aiming at their use in research directed to the current demand of the petroleum industry to value heavy oil. Initially,
two ways were chosen for the synthesis ...
Síntese e caracterização de peneiras moleculares mesoporosas do tipo MCM-41 e AlMCM-41 a partir de fontes alternativas de sílica e de alumínio
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Ciência e Engenharia de MateriaisProcessamento de Materiais a partir do Pó; Polímeros e Compósitos; Processamento de Materiais a part, 2009-06-01)
The mesoporous molecular sieves of MCM-41 and AlMCM-41 type are considered as promising support for metal in the refining processes of petroleum-based materials as catalysts and adsorbents for environmental protection. In ...
Thermogravimetric investigations during the synthesis of silica-based MCM-41
(Kluwer Academic Publ, 2001-01-01)
MCM-41 material was synthesized starting from hydrogel containing colloidal fumed silica, sodium silicate, cetyltetramethylammonium bromide (CTMABr) as surfactant, and distilled water as solvent. These reactants were mixed ...