29 documents found, page 1 of 3
Solar-driven thermo-photocatalytic CO2 methanation over a structured RuO2:TiO2/...
Paulista, Larissa Oliveira; Ferreira, Alexandre; Castanheira, Bruna; Ðolić, Maja B.; Martins, Ramiro; Boaventura, Rui; Vilar, Vítor J.P.A new hybrid catalyst composed of mesostructured silica SBA-15 functionalized with TiO2 and further loaded with RuO2 was developed to efficiently promote thermo-photocatalytic CO2 hydrogenation into methane at low temperatures. The catalytic activity was assessed with respect to TiO2:RuO2 loading, catalyst dosage, illumination source (polychromatic sunlight and monochromatic LEDs) and power, [H2]:[CO2] molar ra...
Biogas upgrading using shaped MOF MIL-160(Al) by pressure swing adsorption proc...
Karimi, Mohsen; Siqueira, Rafael M.; Rodrigues, Alírio; Nouar, Farid; Silva, José A.C.; Serre, Christian; Ferreira, AlexandreBiogas has been introduced as a sustainable source of energy, which is considered as a promising alternative for conventional fossil fuels. Indeed, biogas requires to be upgraded from the impurities, specifically, carbon dioxide to be commercially utilized. In this study, the potential of shaped form MIL-160(Al) as a water stable Al dicarboxylate microporous MOF has been assessed concerning the biogas upgrading...
Assessing the effectiveness of performance indicators in health organizations a...
Ferreira, Alexandre; Dias, ÁlvaroSeveral questions have been raised regarding the credibility, and consequent real value, of the assessment of professional performance as a management tool, considering that there are reports of situations in which the professionals are being evaluated based on objectives to be accomplished rather on the excellence of the performance of their task. As such, this study aims to analyse the introduction of metrics...
MIL-160(Al) as a candidate for biogas upgrading and CO2 capture by adsorption p...
Karimi, Mohsen; Ferreira, Alexandre; Rodrigues, Alírio; Nouar, Farid; Serre, Christian; Silva, José A.C.The microporous bioderived Al dicarboxylate MIL-160(Al) MOF in its shaped form has been evaluated as a candidate for biogas upgrading (BU) and/or carbon capture and storage (CCS) by studying adsorption isotherms of CO2, CH4, and N2 at 313, 343, and 373 K until 8 bar. The isotherms disclosed the following loading capacities: 4.2 (CO2), 2.07 (CH4), and 0.69 (N2) mol/kg at 5.8 bar and 313 K, which fitted with the ...
A importância da satisfação nos serviços - o caso da a. hartrodt Espanã S.A.
Ferreira, AlexandreO presente relatório pretende demonstrar as tarefas realizadas no estágio na empresa a. hartrodt España localizada na cidade de Barcelona, fazendo esta parte de um grupo multinacional de transportes (internacionais), com sede na Alemanha. O estágio foi realizado no âmbito do mestrado de Gestão de Empresas, lecionado no ISAG e teve a duração de 400 horas, tendo começado a 3 de novembro de 2022 e finalizado a 27 ...
Steam reforming of biomass gasification gas for hydrogen production: From therm...
Brito, João; Pinto, Filomena; Ferreira, Alexandre; Soria, M. A.; Madeira, Luís M.ABSTRACT: Biomass gasification produces syngas composed mainly of hydrogen, carbon monoxide, carbon dioxide, methane, water, and higher hydrocarbons, till C4, mainly ethane. The hydrocarbon content can be upgraded into richer hydrogen streams through the steam reforming reaction. This study assessed the steam reforming process at the thermodynamic equilibrium of five streams, with different compositions, from t...
Separation performance of shaped MOF MIL-160(AL) for double applications of pre...
Karimi, Mohsen; Ferreira, Alexandre; Rodrigues, Alírio; Nouar, Farid; Cho, Kyung Ho; Lee, Hwang; Serre, Christian; Silva, José A.C.The world currently faces the dual challenges: climate changes caused by global warming and a high energy demand regarding the exponential population expansion and industrial development [1, 2]. Carbon dioxide, methane, nitrogen oxide and halogenated components are the main anthropogenic greenhouse gases (GHGs) [1]. The challenge of reducing GHGs emission can be overcome by successful developing post-combustion...
Developing pressure swing adsorption process for biogas upgrading using shaped ...
Karimi, Mohsen; Rodrigues, Alírio; Ferreira, Alexandre; Nouar, Farid; Cho, Kyung Ho; Lee, Hwang; Serre, Christian; Silva, José A.C.In this study, regarding the increasing interest on renewable sources of energy as well as considering the challenges of climate changes, the potential of shaped MOF MIL-160 (Al) for biogas upgrading has been evaluated. Accordingly, firstly the breakthrough assessments of CO2 and CH4 adsorption onto this sorbents were studied. Afterwards, a pressure swing adsorption (PSA) process to this end was designed and de...
Separation of CO2/N2 mixture by pressure swing adsorption process using shaped ...
Karimi, Mohsen; Rodrigues, Alírio; Ferreira, Alexandre; Nouar, Farid; Cho, Kyung Ho; Lee, Hwang; Serre, Christian; Silva, José A.C.Breakthrough experiments were properly simulated with ASPEN ADSIM. Cyclic steady state were developed after 10 cycles. Shaped MOF MIL-160(Al) showed and excellent capacity for Post-combustion CO2 Capture. Life cycle assessment (LCA) of MIL-160 for Postcombustion CO2 Capture can be considered as a future direction.
Limiares entre a mitologia e a imagem sobrevivente: iconologias contemporâneas ...
Jara, Daniela Andrade; Caramante, Elton; Ferreira, AlexandreO presente trabalho centra-se na relação entre o mito de Afrodite e iconografias contemporâneas,de Madonna, Lady Gaga e Beyoncé, sobretudo na convergência que estas estabelecem com a obra “O nascimento de Vênus”, de Botticelli.A análise das imagens dar-se-á a partir da“iconologia dos intervalos"deAbyWarburg, que corresponde à investigaçãosobre a linguagem do inconsciente da memória cultural enquanto fenômeno an...