High performance of ultrasonic-assisted synthesis of two spherical polymers for enantioselective catalysis

Sharifzadeh, Zahra; Berijani, Kayhaneh; Morsali, Ali

doi:10.1016/j.ultsonch.2021.105499

Cited by 12 publications

(3 citation statements)

References 97 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This indicated that ultrasound could renew the reaction surface through its ability to blow out the insoluble solid film layer on the surfaces of graphite particles. A similar phenomenon is commonly observed in processes involving ultrasound-assisted leaching [ [32] , [78] , [79] , [80] ].…”

Section: Resultssupporting

confidence: 70%

Effect of ultrasound power on HCl leaching kinetics of impurity removal of aphanitic graphite

Tong

Bilal

et al. 2023

Ultrasonics Sonochemistry

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 70%

Effect of ultrasound power on HCl leaching kinetics of impurity removal of aphanitic graphite

Tong

Bilal

et al. 2023

Ultrasonics Sonochemistry

View full text Add to dashboard Cite

“…The XPS and EDX spectra of the non-US catalyst are shown in Figures 4 and 5, respectively. As reported in the literature [48], there are usually no substantial variations depending on the preparation method, hence the spectra of the non-US catalyst are only presented.…”

Section: The Measurements Of the Bet Surface Areamentioning

confidence: 99%

Pd-HPW/SiO2 Bi-Functional Catalyst: Sonochemical Synthesis, Characterization, and Effect on Octahydroquinazolinone Synthesis

et al. 2021

View full text Add to dashboard Cite

A Palladium-doped silica-supported heteropoly acid (HPW) (1%Pd-HPW/SiO2) bi-functional catalyst was produced using ultrasonic and conventional procedures. Both forms of catalyst were characterized with distinct analytical approaches in order to access the advantages of each one. The presence of the required functional groups in the catalyst was confirmed using FT-IR. The crystallinity of ultrasonically generated 1%Pd-HPW/SiO2 was confirmed with XRD. The existence of necessary elements in the catalyst was also suggested by XPS and EDX data. BET was used to calculate the surface area of the ultrasonically synthesized catalyst (395 m2 g−1), and it was found to be greater than that of the non-ultrasonic synthesized catalyst (382 m2 g−1). The N2 adsorption-desorption isotherm indicated mesoporous structures. The SEM morphology at a similar magnification exhibited quite different shapes. In comparison to traditional methods, ultrasonic approaches produce higher yields in less time and use less energy. Furthermore, the effect of the preparation method of the 1%Pd-HPW/SiO2 catalyst was extensively studied with respect to the synthesis of octahydroquinazolinones. Excellent product yields, a fast reaction time, and simple work-up methods are some peculiarities associated with the ultrasonically synthesized catalyst. The recycling study was also investigated and found suitable for up to four reaction cycles.

show abstract

“…The development of innovative processes based on low-frequency and high-power ultrasound technology has grown in the last two decades due to its large versatility and application in several industrial sectors. Low-frequency ultrasound has been used to enhance from technological properties of polymers [ 1 , 2 ] to manufacturing processes of foods and beverages [ 3 , 4 , 5 ], alloys, and composite materials [ 6 , 7 ], in addition to its application in many research fields, such as tissue engineering [ 8 , 9 ], synthesis of chemicals [ 10 ], design of novel encapsulating systems [ 11 , 12 ], extraction of phytochemical compounds [ 13 ], and many others.…”

Section: Introductionmentioning

confidence: 99%

Low-Frequency Ultrasound Coupled with High-Pressure Technologies: Impact of Hybridized Techniques on the Recovery of Phytochemical Compounds

2021

View full text Add to dashboard Cite

The coupling of innovative technologies has emerged as a smart alternative for the process intensification of bioactive compound extraction from plant matrices. In this regard, the development of hybridized techniques based on the low-frequency and high-power ultrasound and high-pressure technologies, such as supercritical fluid extraction, pressurized liquids extraction, and gas-expanded liquids extraction, can enhance the recovery yields of phytochemicals due to their different action mechanisms. Therefore, this paper reviewed and discussed the current scenario in this field where ultrasound-related technologies are coupled with high-pressure techniques. The main findings, gaps, challenges, advances in knowledge, innovations, and future perspectives were highlighted.

show abstract

High performance of ultrasonic-assisted synthesis of two spherical polymers for enantioselective catalysis

Abstract: Graphical abstract

Cited by 12 publications

References 97 publications

Effect of ultrasound power on HCl leaching kinetics of impurity removal of aphanitic graphite

Effect of ultrasound power on HCl leaching kinetics of impurity removal of aphanitic graphite

Pd-HPW/SiO2 Bi-Functional Catalyst: Sonochemical Synthesis, Characterization, and Effect on Octahydroquinazolinone Synthesis

Low-Frequency Ultrasound Coupled with High-Pressure Technologies: Impact of Hybridized Techniques on the Recovery of Phytochemical Compounds

Contact Info

Product

Resources

About