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Catalytic cracking of bio-oils improved by the formation of mesopores by means of Y zeolite desilication
(Elsevier, 2015-08)
Y zeolite was desilicated by means of alkaline treatments (NaOH 0.05, 0.10 and 0.20 M) during 15 min to produce varying mesoporosity over it. Catalysts were made with a SiO2 matrix and a binder. Pine sawdust bio-oil was ...
Impact of the Desilication Treatment of Y Zeolite on the Catalytic Cracking of Bulky Hydrocarbon Molecules
(Springer/Plenum Publishers, 2015-08)
Mesoporosity was induced on a USY zeolite by means of an alkaline leaching process. Samples were immersed in 0.05, 0.10 and 0.20 M NaOH solutions during 15 min at room temperature and then were exchanged with NH4+ ions and ...
Propriedades ácidas e texturais de zeólitas ZSM-5 dessilicalizadas ou desaluminizadas – análise do rendimento e seletividade a olefinas leves durante a transformação de cicloexano e metilcicloexano
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQCâmpus São Carlos, 2015-03-13)
Nowadays, the Brazilian petroleum is extracted from very deep fields and possesses a high
naphthenic hydrocarbons composition, which imposes new challenges to refineries and
specially to the catalytic cracking process. ...
Basic treatment in natural clinoptilolite for improvement of physicochemical properties
(MDPI Multidisciplinary Digital Publishing Institute, 2018-12-14)
Natural zeolites are low in cost and exhibit interesting properties for applications in adsorption and catalysis. However, the fact that they are natural materials, not obtained in pure form, and can incorporate various ...
Avaliação de modificações pós-síntese em zeólita ZSM-5 comercial aplicada na esterificação de ácido oleico com acetato de metila
(Universidade Federal de Santa MariaBrasilEngenharia QuímicaUFSMPrograma de Pós-Graduação em Engenharia QuímicaCentro de Tecnologia, 2019-11-25)
Zeolites are considered the most important catalysts in industry due to their unique properties. Among these materials, ZSM-5 highlights because of its stability and versatility, presenting a wide range of applications. ...
Craqueamento de hidrocarbonetos naftênicos sobre zeólitas HZSM-12 modificadas – rendimento e seletividade a olefinas leves
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQCâmpus São Carlos, 2015-09-30)
It was studied the catalytic performance of ZSM-12 zeolites modified by desilication in the
cracking of naphthenic hydrocarbons. ZSM-12 zeolites with nominal a SiO2/Al2O3 ratio were
synthesized during 96 or 144 h under ...
A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
(Elsevier, 2013-04)
The catalytic properties of monomodal microporous and bimodal micro-mesoporous zeolites were investigated in the gas-phase dehydration of glycerol. The desilication methodology used to produce the mesoporous zeolites ...
A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
(2013-04-01)
The catalytic properties of monomodal microporous and bimodal micro-mesoporous zeolites were investigated in the gas-phase dehydration of glycerol. The desilication methodology used to produce the mesoporous zeolites ...
Transformação do glicerol em compostos de interesse petroquímico catalisada por zeólitas com ordem hierárquica de poros
(Universidade Estadual Paulista (Unesp), 2013-07-29)
As propriedades catalíticas de zeólitas micro e micro-mesoporoas foram avaliadas pela desidratação do glicerol em fase gasosa. A dessilicação foi a metodologia utilizada para criar mesoporos nas zeólitas, diminuir as ...
A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
(2013-04-01)
The catalytic properties of monomodal microporous and bimodal micro-mesoporous zeolites were investigated in the gas-phase dehydration of glycerol. The desilication methodology used to produce the mesoporous zeolites ...