How to achieve complete elimination of Cl-VOCs: A critical review on byproducts formation and inhibition strategies during catalytic oxidation

Lin, Fawei; Zhang, Zhiman; Li, Na; Yan, Beibei; He, Chi; Hao, Zhixin; Chen, Guanyi

doi:10.1016/j.cej.2020.126534

Cited by 179 publications

(69 citation statements)

References 144 publications

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“…The fatal further HCl oxidation into Cl 2 would readily induce the formation of polychlorinated byproducts such as 1,1,2-C 2 H 3 Cl 3 and CCl 4 , which are enhanced with elevating temperature. 42 With the further increase of temperature, these chlorinated byproducts will be gradually transformed into final target products. Although α-MnO 2 is not found to generate the chlorinated byproducts, the small amount of surface reactive oxygen species resulted in a CO 2 yield lower than that achieved over γ-MnO 2 (Fig.…”

Section: Materials Advances Accepted Manuscriptmentioning

confidence: 99%

Facet control of manganese oxides with diverse redox abilities and acidities for catalytically removing hazardous 1,2-dichloroethane

Shi

Guo

et al. 2022

Mater. Adv.

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Section: Materials Advances Accepted Manuscriptmentioning

confidence: 99%

Facet control of manganese oxides with diverse redox abilities and acidities for catalytically removing hazardous 1,2-dichloroethane

Shi

Guo

et al. 2022

Mater. Adv.

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“…Volatile organic compounds (VOCs) mainly come from petroleum refining, chemical industry, coatings, rubber and other production processes, as well as automobiles 1–3 . It is known that VOCs are an important source of air pollution, and their treatment technology constitutes a major research direction in the field of environmental chemical engineering 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Deep eutectic solvents for efficient capture of cyclohexane in volatile organic compounds: Thermodynamic and molecular mechanism

Gui

Zhu

et al. 2021

AIChE Journal

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Deep eutectic solvents (DESs) as promising green absorbents were first proposed to capture the condensable cyclohexane gas. Choline chloride-ethylene glycol (EG) (Ethaline) and choline chloride-urea (Reline) were prepared using choline chloride as the hydrogen-bond acceptor (HBA) and urea or EG as the hydrogen-bond donor (HBD). To explore the potential application of DESs in condensable gas capture, the COSMO-RS model was used to predict the solubility of cyclohexane in Ethaline and Reline. The thermodynamic properties, that is, Henry's constant and excess enthalpy, were estimated by correlating solubility data with Henry's law equation.Quantum chemical (QC) calculation was applied to understand the absorption mechanism at the molecular level. The results showed that the absorption performance of cyclohexane in Ethaline and Reline was dependent on the weak interaction between O of EG (or N of urea) and H of cyclohexane as well as the free volume effect of DESs.

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“…Chlorinated VOCs (or named as Cl-VOCs) are a large kind of VOCs and are typical atmospheric pollutants, and common examples include dichloromethane, chloroform, vinyl chloride, dichloroethane and chlorobenzene, which seriously endanger human health and the growth of plants and animals. Many countries have established strict environmental regulations to limit the emission of VOCs (especially Cl-VOCs), and several technologies have been developed to recycle or destruct [3,4]. On the one hand, absorption, adsorption, filtration, condensation and other non-destructive recovery methods and, on the other hand, direct thermal combustion, catalytic combustion, catalytic hydrodechlorination, catalytic steam reforming, photocatalysis and other reactive degradation methods are used.…”

Section: Introductionmentioning

confidence: 99%

Preparation of tungsten–iron composite oxides and application in environmental catalysis for volatile organic compounds degradation

et al. 2021

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Emission of volatile organic compounds has important influence on complex air pollution and human health. In this paper, a series of tungsten-iron composite oxides with different proportions and preparation methods were synthesized and first used for catalytic combustion of chlorobenzene and toluene, as typical polluting gas sources. These WO 3 -based solid catalytic materials were systematically characterized by modern analytical methods, and the results showed that there was strong electron interaction between W and Fe elements in the composite oxides, and the presence of a certain amount of tungsten oxide inhibited the crystallization of iron oxide, and vice versa, which were beneficial to the uniform dispersion of tungsten-iron components into each other and the improvement of redox properties. Compared with single-component oxide, the formation of tungsten-iron composite oxide affected the micro-structure, improved the specific surface area and optimized the pore structure of materials. The performance test results showed that the tungsten-iron composite oxide (FeWO 4 -0.5Fe 2 O 3 , molar ratio of tungsten and iron was 1/2) prepared using citric acid-based sol-gel method was the optimal, and its catalytic degradation efficiency could reach 90% for chlorobenzene and 83% for toluene at 320 °C, and maintain at least 60 h without obvious deactivation, with high selectivity to the formation of HCl and CO 2 . KeywordsVolatile organic compounds • Catalytic combustion • WO 3 • FeWO 4 • Composite oxide • Synergistic catalytic effect Tungsten www.springer.com/42864

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How to achieve complete elimination of Cl-VOCs: A critical review on byproducts formation and inhibition strategies during catalytic oxidation

Cited by 179 publications

References 144 publications

Facet control of manganese oxides with diverse redox abilities and acidities for catalytically removing hazardous 1,2-dichloroethane

Facet control of manganese oxides with diverse redox abilities and acidities for catalytically removing hazardous 1,2-dichloroethane

Deep eutectic solvents for efficient capture of cyclohexane in volatile organic compounds: Thermodynamic and molecular mechanism

Preparation of tungsten–iron composite oxides and application in environmental catalysis for volatile organic compounds degradation

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