Activated petroleum coke for natural gas storage

Méndez, Manoel Orlando Alvarez; Lisbôa, Antonio Carlos Luz; Coutinho, Aparecido dos Reis; Otani, Choyou

doi:10.1590/s0103-50532006000600011

Cited by 13 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…layers correspond to a separation of 0.5nm/layer. This value is slightly higher than pristine graphite (0.334nm), suggesting that the present carbon deposits would correspond to the specific case of a supermicroporous AC [23,24]. This feature is in fully agreement with the increase in surface area observed in Ni-Ca/AC ( Table 1) that we suggest as the consequence of an in situ activation by CO 2 of carbon deposits formed during reaction.…”

Section: Carbon Deposits and Morphologysupporting

confidence: 89%

Changes on Texture and Crystalline Phase of Activated Carbon-Supported Ni-Ca Catalyst During Dry Methane Reforming

Matos¹,

Rosales²,

González³

et al. 2010

TOMSJ

View full text Add to dashboard Cite

Changes on texture and crystalline phase of AC-supported Ni-Ca catalyst during dry methane reforming were verified. Characterization by N 2 adsorption, XPS, XRD, TEM and HR-TEM was performed. XPS and XRD analysis suggest that the initial activity can be attributed to a nickel reduced phase formed during helium pre-treatment. TEM showed that a homogeneous distribution of Ni nanoparticles between 10-20nm at the tip of multi-walled carbon nanotubes is formed during reaction. HR-TEM showed diffusion of Ni nanoparticles and the formation of carbon-like nano onions with an interlayer separation of 0.5nm suggesting the formation of a ultra-microporous carbon structure. An increase in surface area from 231m 2 .g -1 to 2405m 2 .g -1 after 90min reaction was found and attributed to an in situ activation of carbon deposits by CO 2 gasification. The present results suggest that introducing CO 2 pulses during reaction carbon-supported Ni-Ca could be employed as potential catalysts for methane and other hydrocarbon reforming reactions at mild experimental conditions.

show abstract

Section: Carbon Deposits and Morphologysupporting

confidence: 89%

Changes on Texture and Crystalline Phase of Activated Carbon-Supported Ni-Ca Catalyst During Dry Methane Reforming

Matos¹,

Rosales²,

González³

et al. 2010

TOMSJ

View full text Add to dashboard Cite

show abstract

“…Alternativamente, os CA podem ser produzidos a partir de materiais com elevado teor de carbono e baixo custo, como os resíduos agrícolas, com destaque para o bagaço de cana-de-açúcar, endocarpo e mesocarpo de coco seco, resíduo da madeira (de pínus, eucalipto etc. ), casca de macadâmia, caroços de abacate e de açaí, entre outros (ALBUQUERQUE JÚNIOR et al, 2008a;2008b;2008c;COSTA et al, 2012;MÉNDEZ et al, 2006;RODRIGUES et al, 2011). A produção de CA é realizada por meio de dois processos principais: carbonização (ou pirólise) e ativação (ou oxidação).…”

Section: Introductionunclassified

Caracterização e avaliação de fatores que determinam a remoção de microcistina-LR em carvão ativado granular produzido a partir de diferentes matérias-primas

Araújo

Coutinho

Méndez

et al. 2018

Eng. Sanit. Ambient.

View full text Add to dashboard Cite

RESUMO As microcistinas (MC), que estão entre as cianotoxinas mais encontradas em florações de cianobactérias, não são eficientemente removidas pelas tecnologias do ciclo completo de tratamento de água. Como barreira adicional para sua remoção, destaca-se o processo de adsorção com carvão ativado granular (CAG). Esta pesquisa comparou a eficiência de remoção de MC-LR por sete CAG produzidos a partir de diferentes matérias-primas, analisando as propriedades das amostras: umidade, teor de cinzas, pH e características texturais. Inicialmente, os resultados indicaram que as propriedades dos CAG foram influenciadas pelo material de origem, assim como pelo método de produção. Nos ensaios de adsorção, o modelo de Langmuir indicou que, em quatro horas, com dosagem de 100 mg.L-1, o CAG de linhito (CGLIN) apresentou a maior capacidade de remoção (97,2%) de MC-LR (Co: 115,1 µg.L-1), com qe,máx de 10,6 mg.g-1. O volume de mesoporos influenciou significativamente a capacidade adsortiva de MC dos carvões avaliados (r=0,98, Pearson). Esses resultados podem oferecer subsídios para a aplicação do processo de adsorção de MC-LR em estações de tratamento de água (ETA) para a minimização de intoxicações por água contaminada.

show abstract

“…There is a variety of adsorbents (such as activated carbon, silica gel and alumina) that have been developed for a wide range of industrial applications because they present enormous surface areas per unit weight. However, the significance and relevance of activated carbon to an ever growing society cannot be overemphasized considering its wide applications in domestic, commercial and industrial settings (Mendez et al, 2006) in fluid phase adsorption studies. In the food industry, activated carbon is used in decolourization, deodorization and taste removal.…”

Section: Introductionmentioning

confidence: 99%

Production and characterization of derived composite biosorbents from animal bone

Olafadehan¹,

Abhulimen²,

Adeleke³

et al. 2019

Afr. J. Pure Appl. Chem.

View full text Add to dashboard Cite

Composite biosorbents were produced from animal bone by carbonization, activation of animal bone char with phosphoric acid and zinc (II) chloride independently, and the obtained activated carbons were separately impregnated on chitosan. The chitosan was produced from chitin, which was extracted from shrimp shell through deminerization, deproteinization and deacetylation processes. Comprehensive characterization studies were carried out on the chitin, chitosan, and the resulting five biosorbents via proximate and ultimate analyses, and Fourier-Transform Infrared (FTIR), Scanning Electron Microscope (SEM) and Electron-dispersive X-ray Spectroscopy (EDX) analyses. The absorption bands of the standard chitosan from Sigma-Aldrich and the experimentally prepared chitosan were in excellent agreement. The results of this study showed that activated carbons impregnated on chitosan have the potential to be applied as alternative efficient low-cost and eco-friendly biosorbents for batch and continuous adsorption column experimentation.

show abstract

Activated petroleum coke for natural gas storage

Cited by 13 publications

References 14 publications

Changes on Texture and Crystalline Phase of Activated Carbon-Supported Ni-Ca Catalyst During Dry Methane Reforming

Changes on Texture and Crystalline Phase of Activated Carbon-Supported Ni-Ca Catalyst During Dry Methane Reforming

Caracterização e avaliação de fatores que determinam a remoção de microcistina-LR em carvão ativado granular produzido a partir de diferentes matérias-primas

Production and characterization of derived composite biosorbents from animal bone

Contact Info

Product

Resources

About