Synergy effects of basic graphitic-C3N4 over acidic Al2O3 for a liquid-phase decarboxylation of naphthenic acids

Park, Jaeyeong; Zafar, Faisal; Kim, Cheol Hyun; Choi, Jae-Hoon; Bae, Jong Wook

doi:10.1016/j.fuproc.2018.11.001

Cited by 17 publications

(4 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The formation of complete metal oxide for a catalyst is obtained via the calcination step [7]. The Ca/Cu(10:90)/Al2O3 catalyst calcined at temperatures of 900, 1000 and 1100°C was used to aid the removal process and, the data is portrayed in Fig.…”

Section: Effect Of Different Calcination Temperatures Of Catalystmentioning

confidence: 99%

“…Crude oil with a TAN value above 0.5 and 1.0 mgKOH/g is classified as acidic and highly acidic oil, respectively [3]. Many researchers have conducted different approaches, for instance, caustic washing, catalytic decarboxylation and catalytic esterification for removal of NA from acidic crude oil [5,6,7]. However, these technologies suffered from some drawbacks, such as the development of emulsion that is difficult to be treated, and requirement for a higher temperature of reaction with a slower reaction process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Study on the Catalytic Technology for Reduction of Naphthenic Acid Compound from Acidic Crude Oil

Shukri

Bakar

Russman

et al. 2022

KEM

View full text Add to dashboard Cite

The existence of naphthenic acid (NA) in acidic crude oil tends to corrode the oil refinery equipment. In this study, a catalytic deacidification reaction involving the deacidifying agent and the synthesised catalyst was aimed to eliminate NA from acidic crude oil. Diethanolamine-polyethylene glycol (DEA-PEG) was introduced as a deacidifying agent. The wet impregnation method was applied for synthesizing the calcium oxide catalyst doped by copper supported on alumina (Cu/Ca/Al2O3). The potential catalyst was characterised utilising field emission scanning electron microscopy-energy dispersive X-ray (FESEM-EDX), Brunauer-Emmett-Teller (BET), and X-ray diffraction spectroscopy (XRD). The parameters include deacidifying agent dosing, loading dopant ratio and catalyst calcination temperature were performed to enhance the catalytic deacidification process in this study. Data showed that the total acidic number (TAN) value for crude B met the PETRONAS requirement for the TAN value below one using 1500 mg/L of DEA-PEG assisted by Cu/Ca (10:90)/Al2O3 catalyst.

show abstract

Section: Effect Of Different Calcination Temperatures Of Catalystmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Study on the Catalytic Technology for Reduction of Naphthenic Acid Compound from Acidic Crude Oil

Shukri

Bakar

Russman

et al. 2022

KEM

View full text Add to dashboard Cite

show abstract

“…The development of transition-metal-free protocols for synthesizing value-added products from abundant feedstock supplies is a central topic in organic synthesis. − Alkanes, alkenes, and carboxylic acids are abundantly available in nature, petrochemical, and pharmaceutical industries. − Converting these materials into high-value carbonyl compounds is a desirable and cost-effective approach. − However, most reported methods for this transformation rely on transition-metal-based catalysts or require harsher reaction conditions or toxic oxidants. − ,− , Visible-light photoredox catalysis has emerged as a powerful tool for sustainable organic synthesis. ,,, Initially, expensive transition-metal photocatalysts (such as Ir or Ru complexes) or photounstable organic dyes were often employed for catalytic conversions. − In recent years, heterogeneous photocatalytic systems have gained significant interest in organic synthesis and energy storage applications. − Notably, mesoporous graphitic carbon nitride (mpg-CN) has attracted attention in the field of photochemistry due to its stability, large surface area, and recyclability. ,− With a band gap of 2.7 eV, mpg-CN possesses similar properties to many homogeneous photocatalysts . Thus, the direct utilization of mpg-CN catalysts for converting readily available feedstock materials into value-added functional groups under low-energy visible light irradiation is highly desirable yet relatively unexplored.…”

Section: Introductionmentioning

confidence: 99%

Recyclable Mesoporous Graphitic Carbon Nitride Catalysts for the Sustainable Photoredox Catalyzed Synthesis of Carbonyl Compounds

Murugesan,

Sagadevan,

Peng

et al. 2023

ACS Catal.

View full text Add to dashboard Cite

The conversion of feedstock materials into useful chemical compounds through feasible processes is highly sought after from both industrial and environmental perspectives. In this study, we developed a simple and scalable protocol for synthesizing aldehydes, ketones, and amides from abundant raw materials, such as alkanes, alkenes, and carboxylic acids. Using a photoactive mesoporous graphitic carbon nitride catalyst (mpg-CN) and molecular oxygen, we successfully transformed over 60 substrates in good yield and selectivity. This method is suitable for the late-stage modification of existing drug molecules into their corresponding carbonyl derivatives and can provide direct access to intermediates or oxidative decomposition and degradation products important for understanding biological pathways in drug development. Additionally, our protocol is applicable for large-scale preparation, and the mpg-CN catalyst can be recycled without significant loss of catalytic activity and selectivity. Comprehensive experiments, including labeled oxygen studies, support the photo-oxidative mechanism.

show abstract

“…The first approach, referred to as a physical method for naphthenic acid removal, includes adsorption, solvent and ionic liquid extractions, − and neutralization . The second approach, known as a chemical method for naphthenic acid removal, involves esterification, − thermal decomposition, and catalytic decomposition. − Naphthenic acid is easily decomposed into hydrocarbons, carbon dioxide, carbon monoxide, and water in the presence of a catalyst, especially the zeolite catalyst. Under the same experimental conditions, the catalytic conversion of naphthenic acid over the zeolite catalyst is higher than the thermal conversion and catalytic conversion over basic oxides …”

Section: Introductionmentioning

confidence: 99%

Conceptual Coupled Process for Catalytic Cracking of High-Acid Crude Oil

Liu

Chen

et al. 2019

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

To process high-acid crude oil by catalytic cracking technology, a coupled process (FCD–FCC) involving fluid catalytic deacidification (FCD) of high-acid crude oil over a spent catalyst and fluid catalytic cracking (FCC) of heavy oil over a regenerated catalyst was proposed. Experiments were carried out in a confined fluidized bed reactor to test the feasibility of this process. The results indicate that the spent catalyst can be used for deacidification of high-acid crude oil to restrain the overcracking of light fractions. The optimal reaction conditions for the catalytic deacidification of Dar acidic crude oil are a temperature of 460 °C, a catalyst-to-oil ratio of 5, and a spent catalyst with a coke content of 1.26 wt %. Compared with the direct catalytic cracking of Dar crude oil over a regenerated catalyst, the yields of light oil and desired product increased by 6.10 and 6.78 wt % in the FCD–FCC process, respectively, and the olefin content of naphtha decreased by approximately 16 wt %, although the naphtha yield was lowered by 2.9 wt %. This strategy sheds new light on the processing of high-acid crude oil.

show abstract

Synergy effects of basic graphitic-C3N4 over acidic Al2O3 for a liquid-phase decarboxylation of naphthenic acids

Cited by 17 publications

References 61 publications

A Study on the Catalytic Technology for Reduction of Naphthenic Acid Compound from Acidic Crude Oil

A Study on the Catalytic Technology for Reduction of Naphthenic Acid Compound from Acidic Crude Oil

Recyclable Mesoporous Graphitic Carbon Nitride Catalysts for the Sustainable Photoredox Catalyzed Synthesis of Carbonyl Compounds

Conceptual Coupled Process for Catalytic Cracking of High-Acid Crude Oil

Contact Info

Product

Resources

About