The use of H-ZSM-5 and Al–MCM-41 in a two-stage system of mesoporous and microporous
catalysts has been proved to improve the quality of bio-oil. Information about biomass …

Polymer coatings, when brought to elevated temperatures may experience thermal
decomposition, leading to failure of their protective properties. The process of thermal …

Molecular sieves MCM-41 were synthesized from rice husk ash (RHA) as alternative
sources of silica, called RHA MCM-41. The material was synthesized by a hydrothermal …

Mass losses related to the vaporization/decomposition of myristic acid, either pure or
adsorbed on SiO 2, γ-Al 2 O 3, SiO 2-Al 2 O 3 and HZSM-5 catalysts were obtained by non …

A single-surfactant templating method was explored for the synthesis of mesoporous
zeolites under microwave irradiation, which allowed programming of temperature and time …

The precursor of LiNiPO 4 was synthesized by solid-state reaction at low-heating
temperature using LiOH· H 2 O and NH 4 NiPO 4· H 2 O as raw materials. LiNiPO 4 was …

The single phase NH 4 Co 0.9 Zn 0.1 PO 4· H 2 O was prepared via solid-state reaction at
80° C. Based on a simplified version of advanced isoconversional procedure, the values of …

The rapid increase in energy demand, the extensive use of fossil fuels, and the urgent need
to reduce carbon dioxide emissions have raised concerns in the transportation sector, since …

RESUMO O processamento do petróleo pesado produzido no País é uma ação
emergencial e estratégica para obter a auto-suficiência e superávits econômicos. Neste …

A indúsria de petróleo é constituída de atividades humanas com grande potencial poluidor.
No refino, por exemplo, consomem grandes quantidades de água e de energia, bem como …