Pseudoboehmite
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Synthesis of high value-added zeolitic materials using glass powder residue as a silica source
In this work, zeolite A was obtained using alkaline fusion followed by a hydrothermal treatment of glass powder residue derived from the manufacturing of glass. The following parameters were evaluated: leaching of the stock material (silica source), mineralizing agent, alumina source, and the alkaline fusion and crystallization temperatures. The synthesized
Mat. Res.. Publicado em: 26/11/2013
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2. Obtenção de membranas hidrofílicas a base de PVP (Poli N-vinil-2-pirrolidona) contendo alginato de sódio e nanocarga de pseudoboemita obtida pelo processo sol-gel
The use of hydrogels combined with various additives in tissue regeneration and wound scarring, injuries and burnings has been an option in treatments of difficult scarring, infected-bleeding wounds, burnings and other diseases whose treatments, moist and sterilized resources are required. The hydrogels based on poly (N-vinyl-2-pyrrolidone) are membranes tha
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011
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3. Specific surface area and structures of aluminas from fibrillar pseudoboehmite
By heating powders of the aluminum monohydroxide fibrillar pseudoboehmite from 200ºC to 1400ºC several high surface area aluminas are prepared and characterized by X-ray diffraction and electron optical methods. Aqueous sols with pseudoboehmite fibrils of different lengths were dried by two methods: at room temperature and spray-dried. The following alumin
Matéria (Rio de Janeiro). Publicado em: 2008-06
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4. Estudo da regeneração de aditivos para catalisadores de craqueamento aluminofosfatos (ALPOs)e silicoaluminofosfatos (SAPOs)
Heterogeneous catalysts such as aluminophosphate and silicoaluminophosphate, molecular sieves with AEL of ALPO-11 and SAPO-11, were synthesized by the hydrothermal method with the following molar composition: 2.9 Al +3.2 P + 3.5 DIPA +32.5 H20 (ALPO-11); 2.9 Al +3.2 P + 0.5 Si + 3.5 DIPA +32.5 H20 (SAPO-11) starting from silica (only in the SAPO-11), pseudob
Publicado em: 2007