Heterogeneous catalysts
Heterogeneous catalysts for biodiesel production.
... HETEROGENEOUS CATALYSTS FOR BIODIESEL PRODUCTION. The recent increase in the world biodiesel demand, along with the need to reduce costs while improving the environmental sustainability of the entire ...
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Síntese catalisadores heterogêneos utilizando como matéria-prima o rejeito do beneficiamento mineral visando a produção de biodiesel / Synthesis heterogeneous catalysts using the reject of mineral benefit as a raw material for biodiesel production
... Heterogeneous catalysts have significant advantages in the production of biodiesel, such as; less contamination of products; ease of separating the catalyst from the reaction medium; possibility of reusing ...
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Obtenção de ácido levulínico e outros produtos a partir de açúcares usando catalisadores heterogêneos / Obtaining levulinic acid and other products from sugars using heterogeneous catalysts
... selective catalysts in the production of this compound causes low yield and separation difficulties, increasing its production ...of heterogeneous acid catalysts (sulfonated styrene divinylbenzene ...
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Thermochemical conversion of lignocellulosic biomass with the use of heterogeneous catalysts
... Starting from biomass, several compounds are present during the process which can influence the activity of the catalyst. It was demonstrated that in the hydrolysis, a greater number of side products can be formed which ...
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Mono and bimetallic catalysts for green chemistry applications
... The heterogeneous catalysts with copper and palladium, prepared by ion exchange method using Y (FAU) and ZSM5 (MFI) zeolite structures, were applied to removing selectively some pollutants from gas or ...
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Quím. Nova vol.37 número3
... a heterogeneous catalyst allows for a simpler purification process for glycerol, facilitating its separation from the biodiesel ...different heterogeneous catalysts for the transesterification of ...
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Hyperfine interactions in metallic catalysts.
... METALLIC CATALYSTS. Heterogeneous catalysts are of fundamental importance in several modern chemical ...of catalysts is an issue of very present interest as it can provide a better ...
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Mat. Res. vol.16 número3
... Thus, heterogeneous catalysts play a fundamental role in the chemical reaction of transesterification, since they accelerate the reaction that converts fatty acids from triacylglycerides (vegetable oil) ...
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Transesterification of Animal Fat to Biodiesel Over Calcined Solid Sodium Silicate Catalyst
... with heterogeneous catalysts, there are a mass transfer limitation that causes solid catalysts to not impact greatly on conversion, thereby influencing an increase in amount of catalyst to slightly ...
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Advanced heterogeneous porous catalysts for desulfurization of diesel
... robust heterogeneous catalyst able to be recycled for consecutive cycles but also that promotes an increase of catalytic ...of heterogeneous catalysts for efficient oxidative desulfurization, [4, 13, ...
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Similarity-based Heterogeneous Neural Networks
... handle heterogeneous information, in the form of mixtures of continuous numbers (crisp or fuzzy), linguistic information and discrete quantities (ordinal, nominal and finite ...resulting heterogeneous ...
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Power aware scheduler for heterogeneous environments
... tense tasks on heterogeneous environments. Each new task type added is analysed to find the power consumption of the task type on the devices in design-time. By using 16 current sensors they were able to measure ...
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Dynamic coordination among heterogeneous agents
... so heterogeneous that there is no set of (arbitrary) beliefs that would induce them to play according to the same ...so heterogeneous that no set of beliefs could induce ...
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Quím. Nova vol.29 número2
... the reduction of NO by alkanes over copper-containing ZSM-5 zeolites. For the |Cu x |[Si y Al]-MFI catalysts in the tests using propane, it can be seen that the conversion of NO increases more slightly at ...
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Not all sellar masses are macroadenomas: think also in metastasis
... with heterogeneous enhancement; (B) Coronal brain MRI sections disclosing a mass with heterogeneous enhancement on post-gadolinium T1 weighted images; (C) and with heterogeneous signal in T2-weighted ...
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J. Braz. Chem. Soc. vol.24 número11
... the catalysts. The supported catalysts prepared in chemical method are almost stable, and so, it was possible to reuse them for four times (Table 2), but the epoxide selectivity ...of catalysts was ...
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Mining images of microbial communities for morphological characteristics in a support of clinical decision making
... 96 circular undulate heterogeneous smooth and wrinkled absence opaque flat dry large.. 97 circular undulate heterogeneous smooth and wrinkled absence opaque flat dry la[r] ...
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Radiol Bras vol.44 número1
... Figure 3. Corpus luteum. A: Right ovary with a cystic, thin-walled mass in its interior, with echogenic content, characteristic of corpus luteum (arrow). B: Color Doppler – the halo of vascularization around the corpus ...
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J. Braz. Chem. Soc. vol.21 número4
... Pt/C catalysts for oxygen reduction in methanol-containing electrolytes increases when decreasing particle sizes, conversely to what they observed in methanol-free ...
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