The elimination of sulfur from fossil fuels via hydrodesulfurization (HDS) is paramount to produce cleaner fuels. Ultradeep HDS refers reducing in below the 10 ppm level. Nevertheless, under such conditions, dibenzothiophenes (DBTs) are be desulfurized presence highly complex aromatic structures that possibly exert inhibitory effects. Therefore, this contribution presents a kinetic study inhibition effect diverse structures: naphthalene (NP), fluorene (FL), and phenanthrene (PHE), on...

The dry reforming of methane is a promising technology for the abatement CH4 and CO2. Ni–La2O3 catalysts are characterized by their long-term stability (100 h) when tested at full conversion. kinetics over these types has been studied using both power-law Langmuir–Hinshelwood-based approaches. However, studies typically deal with fitting net rate, hence disregarding competing parallel surface processes different possible configurations active surface. In this work, we synthesized catalyst...

Abstract Ni‐MoS 2 /γ‐Al O 3 catalysts are commonly used in hydrotreating to enhance fossil fuel quality. The extensive research on these reveals a gap understanding the role of Ni, often underestimated as an inactive sulfide phase or just MoS promoter. In this work, we focused analyzing whether well‐dispersed supported nickel nanoparticles can be active hydrodesulfurization dibenzothiophene. We dispersed Ni by Strong Electrostatic Adsorption (SEA) method across four supports with different...

Se estudió el efecto de la relación leche-lactosuero sobre las propiedades fisicoquímicas (pH, acidez total, sólidos solubles y sinéresis) reológicas (velocidad deformación, viscosidad aparente, índice comportamiento al flujo e consistencia) una bebida láctea fermentada. utilizó un diseño experimental completamente azar dos factores: porcentaje lactosuero (0, 5, 10 15% p/p) tipo leche (entera descremada). La significancia se determinó mediante análisis varianza (ANOVA). Todas analizadas...

To reduce pollution, sulfur, nitrogen, and other heteroatoms are removed from fuels by hydrotreatment (HDT). Conventional HDT catalysts based on Ni-MoS2 phases dispersed over -Al2O3. Despite the myriad of papers studying these catalysts, it is somehow surprising to learn that role Ni in not yet fully understood. Most literature considers either converted some form catalytically inactive nickel sulfide or mixes with MoS2 act as a strong catalytic promoter. In this work, we focused analyzing...

The work presents a kinetic study of the simultaneous hydrodesulfurization dibenzothiophene and hydrogenation aromatics with different chemical structures. This kind studies are seldom reported, since many authors deal almost exclusively hydrodesulfurization. Furthermore, most these employ power rate laws for modelling neglecting rigorous analysis thermodynamic parameters reactions; namely, adsorption enthalpies entropies. Considering this fact, we decided to base our on...

Technical catalysts are shaped as pellets, extrudates, beads, and monoliths. Most often, they composed of a mixture oxides used carriers for metallic phases. The latter usually incorporated by wet impregnation; method with strong environmental impact due to the production liquid wastes toxic gases. Owing such issues, this work presents alternatives preparing technical using reactive grinding mix its components. Particularly, we prepared series catalytic extrudates in hydrocracking tetralin....

<p>The work presents a kinetic study of the simultaneous hydrodesulfurization dibenzothiophene and hydrogenation aromatics with different chemical structures. This kind studies are seldom reported, since many authors deal almost exclusively hydrodesulfurization. Furthermore, most these employ power rate laws for modelling neglecting rigorous analysis thermodynamic parameters reactions; namely, adsorption enthalpies entropies.<br></p><p></p><p>Considering...

The competitive adsorption of aromatics and nitrogen heterocycles on the active sites solid catalytic sulfides (Ni(Co)-MoS2 dispersed over oxidic carriers) typically causes inhibitory effects during hydropurification sulfur heterocycles. Contrary to this typical behavior, we report herein that it is possible promote scission C-S bond refractory dibenzothiophene by co?feeding above compounds a conventional Ni-MoS2/Al2O3 catalyst. Particularly, prove at temperatures between 240 300°C...

The dry reforming of methane is a promising technology for the abatement CH 4 and CO 2 . Solid solution Ni–La oxide catalysts are characterized by their long–term stability (100h) when tested at full conversion. kinetics over this type has been studied using both power law Langmuir–Hinshelwood based approaches. However, these studies typically deal with fitting net rate hence disregarding competing parallel surface processes different possible configurations active surface. In work, we...

The competitive adsorption of aromatics and nitrogen heterocycles on the active sites solid catalytic sulfides (Ni(Co)-MoS2 dispersed over oxidic carriers) typically causes inhibitory effects during hydropurification sulfur heterocycles. Contrary to this typical behavior, we report herein that it is possible promote scission C-S bond refractory dibenzothiophene by co?feeding above compounds a conventional Ni-MoS2/Al2O3 catalyst. Particularly, prove at temperatures between 240 300°C...

The dry reforming of methane is a promising technology for the abatement CH<sub>4</sub> and CO<sub>2</sub>. Solid solution Ni–La oxide catalysts are characterized by their long–term stability (100h) when tested at full conversion. kinetics over this type has been studied using both power law Langmuir–Hinshelwood based approaches. However, these studies typically deal with fitting net rate hence disregarding competing parallel surface processes different possible...