Tuning Y-zeolite based catalyst with copper for enhanced activity and selectivity in vapor phase hydrogenolysis of glycerol to 1,2-propanediol

Mitta, Harisekhar; Seelam, Prem Kumar; Ojala, Satu; Keiski, Riitta L.; Balla, Putrakumar

doi:10.1016/j.apcata.2017.10.019

Cited by 44 publications

(40 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, the peak at ≈380 °C was attributed to the reduction of bulk Cu + to Cu 0 , respectively. At higher Cu loadings (i.e., ≥10 wt%), the reduction peak was shifted to a higher temperature region due to the formation of larger crystalline CuO particles, which are weakly interacted with the Hydrotalcite support, similar to the trend seen in our previous studies . Thus, the reducibility behavior was confirmed by TPR profiles, and the results are also in very good agreement with XRD and electron spin resonance (ESR) analyses.…”

Section: Resultssupporting

confidence: 86%

“…Overall, the decline in Cu dispersion, Cu metal area, and the increment in average particle size were correlated with Cu loadings (Table ). Jiang et al and Mitta et al observed similar phenomena on copper incorporated into various supported catalysts.…”

Section: Resultsmentioning

confidence: 60%

“…Copper metal area, particle size, and dispersion were measured based on refs. . Copper metal surface area was calculated assuming an atom density of 1.47 × 10 19 Cu atoms m −2 .…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Efficient Vapor‐Phase Selective Hydrogenolysis of Bio‐Levulinic Acid to γ‐Valerolactone Using Cu Supported on Hydrotalcite Catalysts

et al. 2018

Self Cite

View full text Add to dashboard Cite

In this work, Cu nanoparticles (Cu NPs, 2‐20 nm) supported on Hydrotalcite catalysts exhibit enhanced selectivity for γ‐valerolactone (GVL) during hydrogenolysis of levulinic acid (LA). At 260 °C, over 3 wt% Cu achieved 87.5% of LA conversion with a maximum GVL selectivity (95%). In contrast, LA hydrogenolysis over 3Cu/Hydrotalcite catalyst is highly active and stable toward the production of GVL due to balanced acido‐basicity and higher Cu dispersion with ultrasmall particle sizes, which are investigated through the temperature programmed desorption (TPD) of ammonia, N2O titration, and transmission electron microscopy (TEM) analysis. Hydrotalcite in combination with inexpensive Cu catalyst is found to be an efficient and environmentally benign for LA hydrogenolysis.

show abstract

Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 60%

See 1 more Smart Citation

Efficient Vapor‐Phase Selective Hydrogenolysis of Bio‐Levulinic Acid to γ‐Valerolactone Using Cu Supported on Hydrotalcite Catalysts

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, on the metallic sites the 2-hydroxypropenal and pyruvaldehyde may also be hydrogenated producing 1,2-PD. 66,68 Furthermore, among transition metals, copper-based catalysts are efficient in glycerol hydrogenolysis under an atmosphere rich in H 2 due to their high activity in the cleavage of C-O bonds associated with the low activity of cleavage of C-C bonds. 69,70 3.2.2.…”

Section: Catalytic Testsmentioning

confidence: 99%

Cu catalysts supported on CaO/MgO for glycerol conversion to lactic acid in alkaline medium employing a continuous flow reaction system

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Notably, when the metal species were loaded on the ZrP, the intensity of transmission band at 525 cm À 1 was weakened, this phenomenon was caused from a consequent replacement of (P)À OÀ H protons of ZrP by Co or Ru cations in the course of impregnation. [49,50] H 2 -TPR profiles have been carried out to investigate the redox properties of the catalysts. As shown in Figure 1c, the RuO 2 /ZrP catalyst presented a main hydrogen consumption peak with a maximum at around 200°C, corresponding to the reduction of RuO 2 to Ru 0 .…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Direct Transformation of Glycerol to Propanal using Zirconium Phosphate‐Supported Bimetallic Catalysts

et al. 2020

View full text Add to dashboard Cite

Selective transformation of glycerol to propanal (PA) provides a feasible route towards the sustainable synthesis of high valueadded chemicals. In this work, zirconium phosphate (ZrP) was studied as support and Ru and Co as metal sites for glycerol hydrogenolysis in a continuous-flow reactor. It was found that ZrP-supported CoÀ O species had a moderate selectivity to PA (49.5 %) in glycerol hydrogenolysis. Notably, once Ru species were doped into CoO/ZrP, the resulting catalyst exhibited not only an outstanding catalytic performance for glycerol hydrogenolysis to PA (a selectivity of 80.2 % at full conversion), but also a high stability at least a 50 h long-term performance. The spent catalyst could be regenerated by calcining in air to remove carbonaceous deposits. Characterization indicated that the acid sites on ZrP played a very critical role in the dehydration of glycerol into acrolein (AE), that the distribution of Co was uniform, basically consistent with that of Zr, P and Ru, and that an especially close contact between CoÀ O and Ru species was formed on Ru/CoO/ZrP catalyst. The further activity tests and characterizations confirmed that there was a strong interaction between the dispersed CoÀ O species and Ru 0 nanoparticles, which endowed Ru sites with high electronic density. This effect could play a role in facilitating the dissociation of H 2 , and thus in promoting the hydrogenation reaction. Besides, DFT calculations suggested that the CoÀ O species can adsorb more strongly the C=C bond of the intermediate AE on a highly coordinatively unsaturated Co (Co cus) site and thus lead to preferential hydrogenation at the C=C bond of AE to PA.

show abstract

Tuning Y-zeolite based catalyst with copper for enhanced activity and selectivity in vapor phase hydrogenolysis of glycerol to 1,2-propanediol

Cited by 44 publications

References 77 publications

Efficient Vapor‐Phase Selective Hydrogenolysis of Bio‐Levulinic Acid to γ‐Valerolactone Using Cu Supported on Hydrotalcite Catalysts

Efficient Vapor‐Phase Selective Hydrogenolysis of Bio‐Levulinic Acid to γ‐Valerolactone Using Cu Supported on Hydrotalcite Catalysts

Cu catalysts supported on CaO/MgO for glycerol conversion to lactic acid in alkaline medium employing a continuous flow reaction system

Direct Transformation of Glycerol to Propanal using Zirconium Phosphate‐Supported Bimetallic Catalysts

Contact Info

Product

Resources

About