Nitrogen Doped Carbon–Silica Based Cu(0) Nanometal Catalyst Enriched with Well-Defined N-moieties: Synthesis and Application in One-Pot Synthesis of 1,4-Disubstituted-1,2,3-triazoles

Sharma, Chandan; Kaur, Manpreet; Choudhary, Anu; Sharma, Sukanya; Paul, Satya

doi:10.1007/s10562-019-02936-y

Cited by 21 publications

(4 citation statements)

References 41 publications

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“…The binding energy centered at 398.7 eV, 400.1 eV, 401.4 eV and 403.2 eV can be assigned to the pyridinic N, pyrrolic N, graphitic N and oxidized N, respectively. 39,40 Fig. 9C(a) shows Ag 3d XPS spectra of Ag@TiO 2 -NGO, where Ag 3d spectra was characterized by doublet peak at 368.2 and 374.1 eV corresponding to Ag 3d 5/2 and Ag 3d 3/2 respectively, associated with pure Ag nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Modified graphene supported Ag–Cu NPs with enhanced bimetallic synergistic effect in oxidation and Chan–Lam coupling reactions

et al. 2020

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Section: Resultsmentioning

confidence: 99%

Modified graphene supported Ag–Cu NPs with enhanced bimetallic synergistic effect in oxidation and Chan–Lam coupling reactions

et al. 2020

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“…These results show that the effect of either eggshell membrane removal or particle size of raw materials have a small effect on the surface areas and pore volumes of the bio-CaO products.Moreover, conducting the calcination with increasing raw material lling from 5 to 20 % volume of the kiln also resulted in only a small effect on the surface areas and pore volumes of the obtained bio-CaO products.In comparison, the BET surface area of the CES product was found to be similar to a previous study [37][38] , which reported that BET surface area of raw eggshells is in the range of 2.33-6.34 m 3 /g. Sharma et al 39 reported that CaO derived from eggshell hass low total pore volume of 0.00722 cm 3 /g with 190 Å mesopore diameter. However, Pornchai et al 25,38 and Han et al 37 found that their calcined eggshell derived CaO had a BET surface area of 14.9 m 3 /g and 19.9 m 3 /g, respectively.…”

Section: Resultsmentioning

confidence: 99%

Scalable Production of Bio-Calcium Oxide via Thermal Decomposition of Solid - Hatchery Waste in a Laboratory-Scale Rotary Kiln

Chuakham,

Putkham,

Chaiyachet

et al. 2024

Preprint

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Chicken eggshell waste is an alternative renewable source for quicklime production. Eggshell waste has received significant attention from researchers due to it being a potential source of bio-CaO, which not only drives the circular economy concept but also supports sustainable development. However, experiments on the production of bio-CaO are normally conducted in a small lab-scale furnace. Furthermore, the eggshell raw material is collected from canteens or households, which is not suitable for economical or industrial production. Therefore, this study investigated the factors affecting the bio-CaO production from hatchery waste via both batch and continuous calcination process in a laboratory-scale rotary kiln for the first time. The eggshells were first separated from the solid hatchery waste. Then, the effect of preparation methods of raw eggshells on the properties of bio-CaO was investigated, e.g., eggshells with and without membrane separation, various particle sizes, and with an increase of the percent raw material filling in the kiln from 5–20%. Calcination of the samples was performed in a rotary kiln at 800°C with a 0.5 RPM rotating speed and a 5° inclination of the kiln. The effects of the calcination process in either an air or N2 atmosphere on the calcined product were also observed. Instrumental analysis shows that the production yield and purity of bio-CaO were in the range of 49–56 wt% and 97–98%, respectively. The results also indicated that the production yield of bio-CaO decreased to 17.7% with a decrease in the raw material particle size from 3.3 mm to 250 µm. Moreover, the production of bio-CaO with eggshells containing eggshell membrane decreases the purity of calcium oxide by about 0.7–1.0%. In addition, further increasing the filling volume of the kiln from 5–20% had only a slight effect on the purity and yield of the product. These results imply that it is not necessary to remove the eggshell membrane from the raw eggshells in order to produce industrial-grade CaO from the raw eggshell. These new findings can likely be used to develop an alternative process design to reduce the manufacturing cost of bio-CaO produced from hatchery waste. Furthermore, this present study reveals that the specifications of the obtained bio-CaO comply with both Thai industrial standards and international food additive standards.

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“…5(b)] as a result of the open 3d 9 valence shells of Cu 2+ species, indicating copper's bivalent oxidation state. 74,75 In addition, copper oxide may be responsible for the shaking up of the satellite peak around 949.2 eV in the Cu 2p XPS spectrum, demonstrating that Cu was highly active on the catalyst surface and was interconvertible to various oxidation states, which contributed to improved catalytic efficiency. The interaction between the copper and nitrogen moieties of carbon resulted in three peaks in the N 1s spectrum (Fig.…”

Section: Spectroscopic Characterizationmentioning

confidence: 99%

DFT stimulation and experimental insights of chiral Cu(ii)–salen scaffold within the pocket of MWW-zeolite and its catalytic study

Lakhani

Chodvadiya

Jha

et al. 2023

Phys. Chem. Chem. Phys.

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Nitrogen Doped Carbon–Silica Based Cu(0) Nanometal Catalyst Enriched with Well-Defined N-moieties: Synthesis and Application in One-Pot Synthesis of 1,4-Disubstituted-1,2,3-triazoles

Cited by 21 publications

References 41 publications

Modified graphene supported Ag–Cu NPs with enhanced bimetallic synergistic effect in oxidation and Chan–Lam coupling reactions

Modified graphene supported Ag–Cu NPs with enhanced bimetallic synergistic effect in oxidation and Chan–Lam coupling reactions

Scalable Production of Bio-Calcium Oxide via Thermal Decomposition of Solid - Hatchery Waste in a Laboratory-Scale Rotary Kiln

DFT stimulation and experimental insights of chiral Cu(ii)–salen scaffold within the pocket of MWW-zeolite and its catalytic study

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