By using a q-calculus, the Walecka many-body field theory was studied in the context of the Tsallis framework. The most important aspect of the application of the q-calculus to the nonadditive formulation of QHD-I is that it naturally emerges as a thermodynamically consistent theory.

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Because of increases in the burning of fossil fuels, there is an increased emission of pollutant gases (e.g. CO 2 ) into the atmosphere. An alternative to minimize these emissions is to capture these gases using porous materials, such as layered double hydroxides (LDHs). In this study, LDHs were synthesized by co-precipitation of ion salts of Mg 2+ and Al 3+. After the synthesis, the materials were treated with a template to expand the layers. The samples were then characterized by X-ray diffraction, thermogravimetric analysis/derivative thermogravimetry, adsorption/desorption of nitrogen, scanning electron microscopy/energy-dispersive X-ray spectroscopy and transmission electron microscopy. A CO 2 adsorption study was then performed to determine the adsorption capacity of the material in accordance with the contact time between the gas and the adsorbent. The adsorption capacities of LDHs and LDHs-P123 for CO 2 were 0.72 and 1.36 mmol/g, respectively, showing satisfactory results post-treatment.

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The mesoporous materials has received much attention due to their promising features in catalysis area, adsorption and ion exchange. Among these materials highlights the SBA-15 having a hexagonal structure, unidirectional, high thermal and hydrothermal stability and high average pore diameter. The synthesis of this material occurs in acidic medium using as organic P123 driver and TEOS as silica source. Despite using only an organic driver, other materials based on silica, such as KIT-6 using an alcohol such as codirecionador structure, reducing the aging time to 24 hours compared to SBA-15. This paper aims to synthesize the SBA-15 using Butanol (C 4 H 10 O) in the synthesis process in order to obtain a material in a shorter time and characterize it in order to evaluate the use of butanol synthesis through the materials obtained. Samples were synthesized according to Zhao et al. (1998) and using the modifications Butanol and characterized by XRD, TG / DTG, adsorption / desorption of nitrogen and SEM. The butanol synthesized material showed textural, structural and morphological characteristics similar to the standard sample, typical materials of SBA-15 type, even with a reduction of 24 hours of its synthesis. The materials synthesized with the use of alcohol, had thicker walls which gives the material a greater resistance. It was possible to shorten the synthesis of SBA-15 in 24 hours, yielding high quality materials, using Butanol during its synthesis.

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