Petroleo Brasileiro S.a. - Petrobras

Edisson Morgado Junior

Claudia Maria De Lacerda Alvarenga Baptista

William Richard Gilbert

Gustavo Torres Moure

Marco Antonio Santos De Abreu

The invention relates to a process carried out continuously in one or more reactors connected in series for the preparation of sodium titanate nanotubes and their derivatives obtained by ion exchange and/or thermal treatment, by reacting titanium oxides with sodium hydroxide under suitable hydrothermal conditions to obtain or control the morphology of nanostructural titanates. The reaction mixture is introduced continuously into the reactor at a feed rate that is the same as the rate of discharge of the product. When more than one reactor is used, the material leaving the first reactor is used to feed the next reactor, and a differential of temperature is applied between the reactors in such a way as to obtain in the average, a temperature of between 60&#xb0; C. and 180&#xb0; C.

Continuous process for the preparation of sodium titanate nanotubes

The present invention relates to a process and equipment for fluid catalytic cracking for the production of middle distillates of low aromaticity that comprises cracking a mixed feed consisting of heavy fractions of hydrocarbons, in the absence of added hydrogen and employing a catalyst of low activity and low acidity, in a dense-bed FCC reactor to produce an effluent constituted of fractions of middle distillates and naphtha of low aromaticity.

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Rio de Janeiro, Brazil

Edisson Morgado Junior