Effect of kcl on cucl2/γ-al2o3 catalyst for oxychlorination of ethane

Liu, Jie; Xueju, L.; Guang-hong, Zhou; Zhen, Kaiji; Zhang, Wenxiang; Cheng, Tiexin

doi:10.1007/s11144-006-0067-6

Cited by 28 publications

(12 citation statements)

References 11 publications

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“…713 K for 90% alkane conversion) owing to the difficulty of activating the strong C-H bond in ethane molecule. [174][175][176][177] At these temperatures, the formation of undesired over-chlorinated compounds (both saturated and unsaturated) and carbon oxides is observed.…”

Section: Ethane Oxychlorination For Vcm Productionmentioning

confidence: 99%

Halogen-Mediated Conversion of Hydrocarbons to Commodities

2017

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Halogen chemistry plays a central role in the industrial manufacture of various important chemicals, pharmaceuticals, and polymers. It involves the reaction of halogens or halides with hydrocarbons, leading to intermediate compounds which are readily converted to valuable commodities. These transformations, predominantly mediated by heterogeneous catalysts, have long been successfully applied in the production of polymers. Recent discoveries of abundant conventional and unconventional natural gas reserves have revitalized strong interest in these processes as the most cost-effective gas-to-liquid technologies. This review provides an in-depth analysis of the fundamental understanding and applied relevance of halogen chemistry in polymer industries (polyvinyl chloride, polyurethanes, and polycarbonates) and in the activation of light hydrocarbons. The reactions of particular interest include halogenation and oxyhalogenation of alkanes and alkenes, dehydrogenation of alkanes, conversion of alkyl halides, and oxidation of hydrogen halides, with emphasis on the catalyst, reactor, and process design. Perspectives on the challenges and directions for future development in this exciting field are provided.

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Section: Ethane Oxychlorination For Vcm Productionmentioning

confidence: 99%

Halogen-Mediated Conversion of Hydrocarbons to Commodities

2017

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“…15,24 The reducible Cu species on CuO/CeO 2 ĲA)-500 and CuO/CeO 2 ĲN)-500 are CuO only, while the reduction of Cu 2 ĲOH) 3 Cl species also contributes to the reduction peaks for CuO/CeO 2 ĲC)-500. 57,58 In addition, for CuO/CeO 2 ĲA)-500 and CuO/CeO 2 ĲC)-500, high temperature peaks at 250 and 392 °C (peak δ), respectively, are required for satisfactory fitting of the profile. This may correspond to the reduction of Cu 2+ in the CeO 2 lattice, which is proposed to be the most difficult to reduce.…”

Section: Catalysis Science and Technology Papermentioning

confidence: 99%

Low-temperature CO oxidation on CuO/CeO₂catalysts: the significant effect of copper precursor and calcination temperature

Sun

Mao

et al. 2015

Catal. Sci. Technol.

143

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“…No significant CuCl 2 diffraction peaks were observed in all samples. This phenomenon indicates that the Cu species must be an amorphous phase or in the form of nanoclusters, which cannot be detected by XRD. , …”

Section: Resultsmentioning

confidence: 99%

Adsorption of Trace Phosphine in Circular Hydrogen of a Polysilicon Chemical Vapor Deposition Stove by Cu/γ-Al₂O₃

Zhou

Liu

et al. 2018

Ind. Eng. Chem. Res.

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In our previous studies, CuCl 2 showed excellent removal efficiency for trace phosphine in circular hydrogen of a polysilicon chemical vapor decomposition (CVD) stove. In this study, the investigation of properties and performances of CuCl 2 supported on γ-Al 2 O 3 with high surface area were conducted. Various characterization techniques including BET, XRD, TPR, SEM, TGA, and XPS were used to identify the copper species and discuss the adsorption mechanism. The results illustrated that γ-Al 2 O 3 maintained the mesoporous structure and high specific surface area and it was well dispersed on the channel of γ-Al 2 O 3 after impregnation of CuCl 2 . There are two forms of copper species, copper aluminate and amorphous CuCl 2 , generated according to the copper loading. In the adsorption experiment, the virgin γ-Al 2 O 3 has no adsorption capacity for PH 3 . Copper aluminate showed weak adsorption performance, while amorphous CuCl 2 exhibited high reactivity for PH 3 capture. The adsorption capacity of 7.4% Cu/γ-Al 2 O 3 was 32.09 mg/g with an inlet concentration of 50 ppm at 20 °C. Moreover, the chemical adsorption efficiencies of Cu/γ-Al 2 O 3 increased with increasing the adsorption temperature ranging from −15 to 50 °C, but decreased by increasing the concentration of HCl in the inlet gas. After capturing PH 3 in N 2 , the transformation of PH 3 followed the sequence of PH 3 → H 2 P−OH → HOPO → H 3 PO 4 or P 2 O 5 . At the same time, Cu 2+ was reduced to Cu + . Ultimately, H 3 PO 4 and P 2 O 5 were produced and CuCl 2 was regenerated by exposing the spent sample to ambient air for a long time. Partial water molecule may be involved in the adsorption process. The adsorbent can be renewed well by thermal treatment in air atmosphere, and the cumulative adsorption capacity for four cycles is 146.1 mg/g. Cu/γ-Al 2 O 3 can be effectively used as a trace phosphine adsorbent at room temperature.

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Effect of kcl on cucl2/γ-al2o3 catalyst for oxychlorination of ethane

Cited by 28 publications

References 11 publications

Halogen-Mediated Conversion of Hydrocarbons to Commodities

Halogen-Mediated Conversion of Hydrocarbons to Commodities

Low-temperature CO oxidation on CuO/CeO₂catalysts: the significant effect of copper precursor and calcination temperature

Adsorption of Trace Phosphine in Circular Hydrogen of a Polysilicon Chemical Vapor Deposition Stove by Cu/γ-Al₂O₃

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Effect of kcl on cucl2/γ-al2o3 catalyst for oxychlorination of ethane

Cited by 28 publications

References 11 publications

Halogen-Mediated Conversion of Hydrocarbons to Commodities

Halogen-Mediated Conversion of Hydrocarbons to Commodities

Low-temperature CO oxidation on CuO/CeO2catalysts: the significant effect of copper precursor and calcination temperature

Adsorption of Trace Phosphine in Circular Hydrogen of a Polysilicon Chemical Vapor Deposition Stove by Cu/γ-Al2O3

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Product

Resources

About

Low-temperature CO oxidation on CuO/CeO₂catalysts: the significant effect of copper precursor and calcination temperature

Adsorption of Trace Phosphine in Circular Hydrogen of a Polysilicon Chemical Vapor Deposition Stove by Cu/γ-Al₂O₃