High catalytic performance of 2D Ti3C2Tx MXene in α-pinene isomerization to camphene

Zielińska, Beata; Wróblewska, Agnieszka; Maślana, Klaudia; Miądlicki, Piotr; Kiełbasa, Karolina; Rozmysłowska-Wojciechowska, Anita; Petrus, Mateusz; Woźniak, Jarosław; Jastrzębska, Agnieszka; Michalkiewicz, Beata; Mijowska, Ewa

doi:10.1016/j.apcata.2020.117765

Cited by 13 publications

(19 citation statements)

References 53 publications

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“…Therefore, the consumption rate of α-pinene followed the first-order kinetics. This reaction order matches our previous results achieved for instance for α-pinene isomerization over Ti 3 C 2 and ex-Ti 3 C 2 [66] over clinoptilolite (modified with 0.1 M H 2 SO 4 -CLIN 0.1) [63]. Moreover, similar results were also reported by other authors, namely, Ünveren et al [90] and Allahverdiev et al [91].…”

Section: Kinetic Studiessupporting

confidence: 92%

“…At present, the aim is to use catalysts that show higher activity and selectivity for the main products of alpha-pinene isomerization. The catalysts that have been used in the alpha-pinene isomerization reaction are zeolites [63], silica [64,65], ion exchange resin [55], H-mordenite molecular sieves [62], 2D Ti 3 C 2 TxMXene [66], zirconium sulfate [67], activated TiO 2 [68], and natural aluminosilicates modified with acid [69].…”

Section: Introductionmentioning

confidence: 99%

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Activated Carbon Modification towards Efficient Catalyst for High Value-Added Products Synthesis from Alpha-Pinene

et al. 2021

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DT0-activated carbons modified with HCl and HNO3 acids, which were used for the first time in the catalytic process of alpha-pinene isomerization, are presented in this study. The carbon materials DT0, DT0_HCl, DT0_HNO3, and DT0_HCl_HNO3 were examined with the following methods: XRF, SEM, EDX, XPS, FT-IR, XRD, and N2 adsorption at −196 °C. It was shown that DT0_HCl_HNO3-activated carbon was the most active material in the alpha-pinene isomerization process. Detailed studies of alpha-pinene isomerization were carried out over this carbon by changing the reaction parameters such as time (5–180 min) and temperature (60–175 °C). The 100% conversion of alpha-pinene was achieved at the temperature of 160 °C and catalyst content of 5 wt% after 3 h over the DT0_HCl_HNO3 catalyst. Camphene and limonene were the main products of the alpha-pinene isomerization reaction.

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Section: Kinetic Studiessupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Activated Carbon Modification towards Efficient Catalyst for High Value-Added Products Synthesis from Alpha-Pinene

et al. 2021

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“…21,24−26 It is also worth noting that TiC has been the subject of several surface science studies, 27,28 in view of its rock salt crystal structure. TiC(001) is the most stable and studied surface, yet the highly unstable TiC (111) surface has also been considered. 29 atoms, whereas layers of Ti and C atoms alternate in TiC (111), thus offering two possible terminations.…”

Section: Introductionmentioning

confidence: 99%

“…TiC(001) is the most stable and studied surface, yet the highly unstable TiC (111) surface has also been considered. 29 atoms, whereas layers of Ti and C atoms alternate in TiC (111), thus offering two possible terminations. TMC surfaces are prepared from bulk single-crystal carbides, carbide-modified single-crystal metal surfaces, and polycrystalline carbide thin films.…”

Section: Introductionmentioning

confidence: 99%

MXenes: New Horizons in Catalysis

2020

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Two-dimensional transition-metal carbides and nitrides, known as MXenes, have garnered increasing attention for nearly a decade by virtue of their versatile composition and structure, stability under certain conditions of interest in (electro)catalysis, and numerous appealing properties. Given the abundance of their components, large surface area and high laboratory-scale activities, MXenes are promising catalysts and supports for several heterogeneous catalytic and electrocatalytic reactions. This Perspective briefly summarizes the most relevant (electro)catalytic processes where MXenes hold promise as competitive alternatives to traditional Pt-group catalysts. We discuss how the interplay of metal elements with carbon, nitrogen, and various surface terminations modulates the catalytic activity of MXenes. In particular, we analyze the connection between experimental and simulated MXene structures and discuss the differences with bulk carbide extended surfaces. The great advances in synthesis routes and upscaling, in combination with realistic computational models, may give MXenes a leading role in the current quest for efficient catalytic processes.

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“…According to the regression coefficients, it was concluded that α-pinene isomerization is a first-order reaction. This reaction order followed our early studies obtained for α-pinene isomerization over Ti 3 C 2 and ex- [ 96 ] and clinoptilolite (modified with 0.1 M H 2 SO 4 —CLIN 0.1) [ 66 ]. Similar results were also evidenced by other authors, e.g., Ünveren et al [ 65 ] and Allahverdiev et al [ 97 ].…”

Section: Resultsmentioning

confidence: 79%

Activated Carbons Obtained from Orange Peels, Coffee Grounds, and Sunflower Husks—Comparison of Physicochemical Properties and Activity in the Alpha-Pinene Isomerization Process

et al. 2021

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This work presents studies on the preparation of porous carbon materials from waste biomass in the form of orange peels, coffee grounds, and sunflower seed husks. The preparation of activated carbons from these three waste materials involved activation with KOH followed by carbonization at 800 °C in an N2 atmosphere. This way of obtaining the activated carbons is very simple and requires the application of only two reactants. Thus, this method is cheap, and it does not generate much chemical waste. The obtained activated carbons were characterized by XRD, SEM, XPS, and XRF methods. Moreover, the textural properties, acidity, and catalytic activity of these materials were descried. During catalytic tests carried out in the alpha-pinene isomerization process (the use of the activated carbons thus obtained in the process of alpha-pinene isomerization has not been described so far), the most active were activated carbons obtained from coffee grounds and orange peels. Generally, the catalytic activity of the obtained materials depended on the pore size, and the most active activated carbons had more pores with sizes of 0.7–1.0 and 1.1–1.4 nm. Moreover, the presence of potassium and chlorine ions in the pores may also be of key importance for the alpha-pinene isomerization process. On the other hand, the acidity of the surface of the tested active carbons did not affect their catalytic activity. The most favorable conditions for carrying out the alpha-pinene isomerization process were the same for the three tested activated carbons: temperature 160 °C, amount of the catalyst 5 wt.%, and reaction time 3 h. Kinetic studies were also carried out for the three tested catalysts. These studies showed that the isomerization over activated carbons from orange peels, coffee grounds, and sunflower seed husks is a first-order reaction.

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High catalytic performance of 2D Ti3C2Tx MXene in α-pinene isomerization to camphene

Cited by 13 publications

References 53 publications

Activated Carbon Modification towards Efficient Catalyst for High Value-Added Products Synthesis from Alpha-Pinene

Activated Carbon Modification towards Efficient Catalyst for High Value-Added Products Synthesis from Alpha-Pinene

MXenes: New Horizons in Catalysis

Activated Carbons Obtained from Orange Peels, Coffee Grounds, and Sunflower Husks—Comparison of Physicochemical Properties and Activity in the Alpha-Pinene Isomerization Process

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