Preparation and Characterization: The Effect of Incorporation by Ion Exchange of Pt, Ni and Ru on a H-ZSM5 Zeolite

Barbosa, Antúsia dos Santos; Barbosa, Antonielly Santos; Rodrigues, Meiry Gláucia Freire; Grau, Javier Mario

doi:10.4028/www.scientific.net/msf.727-728.32

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…The diffraction pattern for the catalysts was similar. According to data [46,48], the presence of Pt has virtually no effect on the framework structure of the zeolite, including under ion exchange conditions. In this case, the metal was detected in the form of larger particles, in comparison with the ion exchange method [46], and one reflection in the range of 2θ ≈ 15°-20° near Co3O4 for monometallic catalysts sometimes leads to a strong metal-support interaction [46].…”

Section: Resultsmentioning

confidence: 99%

“…According to data [46,48], the presence of Pt has virtually no effect on the framework structure of the zeolite, including under ion exchange conditions. In this case, the metal was detected in the form of larger particles, in comparison with the ion exchange method [46], and one reflection in the range of 2θ ≈ 15°-20° near Co3O4 for monometallic catalysts sometimes leads to a strong metal-support interaction [46]. For the studied catalysts with Pt in the structure of the acid component and on the surface of the composite, they were accompanied by some shift of the Co3O4 reflection (hkl 3 1 1) from d = 0.244 nm at an intensity of 107 arb.…”

Section: Resultsmentioning

confidence: 99%

“…A promising option for expanding the scope of the application of the catalyst may be searching for the optimal hydrogenating metal, including Pt. The method of introducing Pt into the catalyst (using a precursor, which, according to [46], provides the highest dispersion of the metal and the best catalytic characteristics) is seen as a way to influence the state of cobalt centers as an active metal, in conjunction with the acid centers of the zeolite in the spatial structure of the catalyst. The presence of a hydrogenating agent, as a second metal in the composition of a bifunctional catalyst, should obviously be accompanied by an effect on the particle size, dispersion, crystalline orientation of cobalt and other components in the system and the occurrence of effects that depend not only on the number and proximity of metal and acid centers but also, possibly, on the number of acid sites between two metal centers.…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Platinum on the Catalytic Properties of Bifunctional Cobalt Catalysts for the Synthesis of Hydrocarbons from CO and H2

Yakovenko,

Zubkov,

Papeta

et al. 2024

Catalysts

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New bifunctional cobalt catalysts for combined Fischer–Tropsch synthesis and hydroprocessing of hydrocarbons containing Pt were developed. To prepare catalysts in the form of a composite mixture, the FT synthesis catalyst Co-Al2O3/SiO2 and ZSM-5 zeolite in the H-form were used as metal and acid components, respectively, with boehmite as a binder. The catalysts were characterized by various methods, such as XRD using synchrotron radiation, SEM, EDS, TEM and TPR. The effect of the Pt introduction method on the particle size and conditions for cobalt reduction was studied. The testing of catalysts in Fischer–Tropsch synthesis was carried out at a pressure of 2.0 MPa, a temperature of 240 and 250 °C, an H2/CO ratio of 2 and a synthesis gas volumetric velocity of 1000 h−1. It is shown that the method of introducing a hydrogenating metal by adjusting the nano-sized spatial structure of the catalyst determined the activity in the synthesis and group and fractional composition of the resulting products. It is established that the presence of Pt intensified the processes of synthesis and hydrogenation, including isomeric products, and reduced the content of unsaturated hydrocarbons. The application of Pt by impregnation onto the surface of the metal component of the catalysts provided the highest productivity for C5+ hydrocarbons, and for the acidic component, it enabled maximum cracking and isomerizing abilities.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Influence of Platinum on the Catalytic Properties of Bifunctional Cobalt Catalysts for the Synthesis of Hydrocarbons from CO and H2

Yakovenko,

Zubkov,

Papeta

et al. 2024

Catalysts

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“…Contrary to impregnation ion exchange involves the interchange of ions from a carrier with an active metal. This method is carried out by inserting cations into zeolites through the exchange of alkali or alkaline earth cations by using precursor salts [33][34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Cracking of Methyl Ester from Used Cooking Oil with Ni-Ion-Exchanged ZSM-5 Catalyst

Alfernando¹,

Sarip²,

Anggraini³

et al. 2019

Makara J. Sci

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Fossil crude reserves continue to decline, eventually leading to a reduced availability of fuel oil in Indonesia. Thus, the use of alternative plant-derived renewable energy sources, such as biodiesel should be considered. However, biodiesel as a fuel alternative has many drawbacks. In this study, biodiesel was cracked using a Ni-ZSM-5 catalyst to improve its quality. This work aimed to synthesize and characterize the Ni-ZSM-5 catalyst obtained from ion-exchange and catalytically crack methyl esters from used cooking oil. Three Ni-metal concentrations (1%, 2%, and 3%) were used for the ion-exchange of ZSM-5. Ni catalysts were then utilized for catalytic cracking at three temperatures (450 ºC, 500 ºC, and 550 ºC). X-ray diffraction and scanning electron microscopy (SEM) analysis showed that the catalyst was in an aggregate form. SEM-energy-dispersive X-ray spectroscopy analysis indicated that Ni was successfully adsorbed by the catalyst. The gravimetry of the catalytically cracked product revealed that the highest oil fraction was obtained using 1% Ni catalyst at 450 ºC. The largest chain obtained with this catalyst was diesel oil (C13-C19) with total 92.96% of covered peak area in the chromatogram/component quantity from gas chromatography.

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Adsorption of gaseous pollutants by alkali-activated materials

Papa

Landi

Medri

2022

Alkali-Activated Materials in Environmental Technology Applications

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Preparation and Characterization: The Effect of Incorporation by Ion Exchange of Pt, Ni and Ru on a H-ZSM5 Zeolite

Cited by 6 publications

References 13 publications

The Influence of Platinum on the Catalytic Properties of Bifunctional Cobalt Catalysts for the Synthesis of Hydrocarbons from CO and H2

The Influence of Platinum on the Catalytic Properties of Bifunctional Cobalt Catalysts for the Synthesis of Hydrocarbons from CO and H2

Catalytic Cracking of Methyl Ester from Used Cooking Oil with Ni-Ion-Exchanged ZSM-5 Catalyst

Adsorption of gaseous pollutants by alkali-activated materials

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