Dehydrogenation of cyclohexanol over Cu/Al2O3 catalysts prepared with different precipitating agents

Tangale, Nilesh P.; Niphadkar, Prashant S.; Deshpande, S. B.; Joshi, P.N.

doi:10.1016/j.apcata.2013.07.063

Cited by 27 publications

(14 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The transformation of bernalite, gothite, and magnetite to hematite phase is displayed in the X-ray diffraction pattern in Figure 3 (Tangale et al, 2013).…”

Section: Figure 3 X-ray Diffraction Pattern Of Hematitementioning

confidence: 99%

Structure and Morphology Properties of Nanoparticle Hematite Pigment from Lathe Waste

Khoiroh¹,

Sholekah²,

Yulianti³

2021

IJC

View full text Add to dashboard Cite

Hematite coated PEG was synthesized by the sonication-calcination method. A variation of Na2CO3 is investigated to know the effect on structure and morphology. Characterization of samples are using X-ray fluorescence, X-ray diffraction, Scanning electron microscopy, and color reader techniques. XRF data showed that iron is the highest element in the precursor. The X-ray diffraction data confirm that Fe(OH)3, α-FeOOH, and Fe3O4 established at the sonication stage are then transformed into the α-Fe2O3 phase after calcination. The X-ray diffraction data also was found that α-Fe2O3 at 0.5 M formed with the highest crystallinity degree. The scanning electron microscopy showed that the particle's shape is spherical, bar-shaped, and aggregate. However, the distribution of particles is not uniform and still displays agglomeration. The Color reader shows the highest degree of lightness obtained is at 1 M variation.

show abstract

“…The transformation of bernalite, gothite, and magnetite to hematite phase is displayed in the X-ray diffraction pattern in Figure 3 (Tangale et al, 2013).…”

Section: Figure 3 X-ray Diffraction Pattern Of Hematitementioning

confidence: 99%

Structure and Morphology Properties of Nanoparticle Hematite Pigment from Lathe Waste

Khoiroh¹,

Sholekah²,

Yulianti³

2021

IJC

View full text Add to dashboard Cite

show abstract

“…53 It is traditionally believed that CHene is inevitably produced on the acid sites of the catalyst surface at elevated temperatures. 28 Long-term stability of 15 wt% Cu/MgO-SBA15 catalyst…”

Section: Effect Of Temperature On the Activity/selectivitymentioning

confidence: 99%

“…The selective dehydrogenation of cyclohexanol to cyclohexanone (SDCC) is industrially signicant due to the vital applications of cyclohexanone mainly in textile industries. To date, gas-phase dehydrogenation of cyclohexanol extensively studied on various copper catalysts including Cu/Al 2 O 3 , 28 Cu/ MgO, 29 Cu/SiO 2 , 30 and Cu/ZrO 2 . 31 However, improvement of the catalyst with high activity and stability for the SDCC is quite a challenging task.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen-free hydrogenation of nitrobenzene via direct coupling with cyclohexanol dehydrogenation over ordered mesoporous MgO/SBA-15 supported Cu nanoparticles

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The preparation methods and the proportion of Cu + /(Cu + + Cu 0 ) largely determined the activity and stability of Cu/SiO 2 catalysts. [18,24,28] Herein, the performance of Cu/SiO 2 catalysts for AP hydrogenation was investigated. The catalysts prepared by a homogeneous precipitation method, ascribed to the formation of copper phyllosilicate, had better activity and stability than those prepared by a co-precipitation method.…”

Section: Introductionmentioning

confidence: 99%

Study of nano‐Cu/SiO₂ catalysts for highly selective hydrogenation of acetophenone

Wang

Zhang

Wang

et al. 2019

Applied Organom Chemis

View full text Add to dashboard Cite

Hydrogenation of acetophenone over nano-Cu/SiO 2 catalysts was investigated.The catalysts, prepared by a liquid precipitation method using various precipitating agents, were characterized using low-temperature nitrogen adsorption, X-ray diffraction, temperature-programmed desorption of ammonia, hydrogen temperature-programmed reduction, transmission electron microscopy and X-ray photoelectron spectroscopy. It was found that the catalysts prepared by a homogeneous precipitation method had better activity and stability than those prepared by a co-precipitation method. The catalyst prepared using urea as precipitating agent had well-dispersed copper species, high surface area and abundant pore structure. The catalytic performance and mechanism of the Cu/SiO 2 catalysts were further studied. It was found that the activity and stability of the catalysts could be improved by adjusting the proportion of Cu + /(Cu + + Cu 0 ). The sample prepared using urea as precipitating agent presented higher activity and selectivity. Also, the catalyst prepared using urea maintained a high catalytic performance while being continuously used for 150 h under the optimal reaction conditions.

show abstract

Dehydrogenation of cyclohexanol over Cu/Al2O3 catalysts prepared with different precipitating agents

Cited by 27 publications

References 39 publications

Structure and Morphology Properties of Nanoparticle Hematite Pigment from Lathe Waste

Structure and Morphology Properties of Nanoparticle Hematite Pigment from Lathe Waste

Hydrogen-free hydrogenation of nitrobenzene via direct coupling with cyclohexanol dehydrogenation over ordered mesoporous MgO/SBA-15 supported Cu nanoparticles

Study of nano‐Cu/SiO₂ catalysts for highly selective hydrogenation of acetophenone

Contact Info

Product

Resources

About

Dehydrogenation of cyclohexanol over Cu/Al2O3 catalysts prepared with different precipitating agents

Cited by 27 publications

References 39 publications

Structure and Morphology Properties of Nanoparticle Hematite Pigment from Lathe Waste

Structure and Morphology Properties of Nanoparticle Hematite Pigment from Lathe Waste

Hydrogen-free hydrogenation of nitrobenzene via direct coupling with cyclohexanol dehydrogenation over ordered mesoporous MgO/SBA-15 supported Cu nanoparticles

Study of nano‐Cu/SiO2 catalysts for highly selective hydrogenation of acetophenone

Contact Info

Product

Resources

About

Study of nano‐Cu/SiO₂ catalysts for highly selective hydrogenation of acetophenone