Oxidation of 1,3-Butadiene over Nickel- and Copper-Based Catalysts: Exploring the Effectiveness of Ceria and Niobia Supports DOI
Kaushik Sivaramakrishnan,

Ali Alabedkhalil,

Labeeb Ali

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 26, 2024

This study investigates the oxidation of 1,3-butadiene (BD), which is a classified hazardous air pollutant with high degree toxicity, over temperature range 300–650 °C. The intent in this work to find an efficient method destroying toxic, carcinogenic, and unstable BD, can cause storage problems as well and, process, exploring possibility its conversion useful industrial starting materials, such synthesis gas. being unsaturated hydrocarbon, reactive right combination heterogeneous catalysts. For purpose, we investigate role Ni- Cu-based catalysts different loadings on alumina, niobia, ceria–niobia combinations track yield selectivity obtained products product relative yields were through gas chromatography (GC) combined mass spectrometry thermal conductivity detector, while Fourier transform infrared spectroscopy (FTIR) also used corroborate GC results. main objective was identify best catalyst for BD low-mid range. Furthermore, order dispersion, morphology, metal–support interactions, surface areas, pore sizes, redox capabilities their potential influence reaction, comprehensive characterization methods X-ray diffraction, FTIR, scanning electron microscopy energy-dispersive spectra, nitrogen adsorption desorption, hydrogen-temperature-programmed reduction employed. It seen that 10% copper loading CeO2 Nb2O5 showed optimal catalytic performance 100% butadiene highest at all temperatures. findings entail practical environmental application reactions dealing toxic compounds constituents hydrocarbon emissions from exhaust catalysis.

Language: Английский

Sodium Poly(heptazine imide)-Enabled Oxytrifluoromethylation of Alkenes for the Synthesis of α-CF3 Ketones DOI
Chen Bao, Xinyu Zhu,

Mengying Xu

et al.

The Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 29, 2025

This paper describes a NaPHI-catalyzed oxytrifluoromethylation of olefins under photoirradiation. The reaction is applicable for the synthesis α-trifluoromethyl ketones, which could be structurally elaborated into an array useful scaffolds. Mechanistic studies suggested that photoexcited NaPHI* facilitate formation singlet 1O2 through EnT process, thus enabling difunctionalization with trifluoromethyl radical and oxygen anion species.

Language: Английский

Citations

0
1,2-Oxidative Trifluoromethylation of Olefin with Ag(O2CCF2SO2F) and O2: Synthesis of α-Trifluoromethyl Ketones DOI Creative Commons
Shengxue Zhang,

Wangchuan Xiao,

Jingjing Wu

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(23), P. 5622 - 5622

Published: Nov. 27, 2024

A novel and efficient 1,2-oxidative trifluoromethylation of olefins employing Ag(O2CCF2SO2F) as a trifluoromethyl source is described with O2 the oxidant, which provides access to variety valuable α-trifluoromethyl-substituted ketones. The broad substrate scope, feasibility large-scale operation, derivatization reactions α-trifluoromethyl ketones demonstrate promising utility this protocol.

Language: Английский

Citations

0
Oxidation of 1,3-Butadiene over Nickel- and Copper-Based Catalysts: Exploring the Effectiveness of Ceria and Niobia Supports DOI
Kaushik Sivaramakrishnan,

Ali Alabedkhalil,

Labeeb Ali

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 26, 2024

This study investigates the oxidation of 1,3-butadiene (BD), which is a classified hazardous air pollutant with high degree toxicity, over temperature range 300–650 °C. The intent in this work to find an efficient method destroying toxic, carcinogenic, and unstable BD, can cause storage problems as well and, process, exploring possibility its conversion useful industrial starting materials, such synthesis gas. being unsaturated hydrocarbon, reactive right combination heterogeneous catalysts. For purpose, we investigate role Ni- Cu-based catalysts different loadings on alumina, niobia, ceria–niobia combinations track yield selectivity obtained products product relative yields were through gas chromatography (GC) combined mass spectrometry thermal conductivity detector, while Fourier transform infrared spectroscopy (FTIR) also used corroborate GC results. main objective was identify best catalyst for BD low-mid range. Furthermore, order dispersion, morphology, metal–support interactions, surface areas, pore sizes, redox capabilities their potential influence reaction, comprehensive characterization methods X-ray diffraction, FTIR, scanning electron microscopy energy-dispersive spectra, nitrogen adsorption desorption, hydrogen-temperature-programmed reduction employed. It seen that 10% copper loading CeO2 Nb2O5 showed optimal catalytic performance 100% butadiene highest at all temperatures. findings entail practical environmental application reactions dealing toxic compounds constituents hydrocarbon emissions from exhaust catalysis.

Language: Английский

Citations

0