Controlling effect of TiO2 carrier on formed vanadium species for effective catalytic oxidization of chlorobenzene

Zhang, Xiaoqiao; Hong, Jiaxing; Zhang, Chenxin; Liu, Qiang; Zhang, Jia; Qian, Guangren

doi:10.1016/j.apsusc.2022.154643

Cited by 9 publications

(2 citation statements)

References 53 publications

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“…Chlorobenzene (CB) is usually used as a substitute for dioxins . Catalytic oxidization of CB was carried out on a fixed-bed reactor (Figure S1 in the Supporting Information) . The prepared monolithic catalysts were cut into a cylinder with a diameter of 15 mm and set in the quartz reactor (length = 550 mm, inner diameter = 15 mm, and thickness = 1.5 mm).…”

Section: Methodsmentioning

confidence: 99%

“…25 Catalytic oxidization of CB was carried out on a fixed-bed reactor (Figure S1 in the Supporting Information). 26 The prepared monolithic catalysts were cut into a cylinder with a diameter of 15 mm and set in the quartz reactor (length = 550 mm, inner diameter = 15 mm, and thickness = 1.5 mm). The CB gas was generated by a bubbling method using 50 mL•min −1 air, which was then mixed with 450 mL•min −1 air.…”

Section: Preparation Of Monolithic Catalystsmentioning

confidence: 99%

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Understanding the Relationship between Internal Diffusion Resistance and Catalytic Degradation of Chlorobenzene by the Coated Monolithic Catalyst

Song,

Zhang,

Yue

et al. 2024

Ind. Eng. Chem. Res.

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Even if a newly developed catalyst is super excellent, commercialization will not be achieved without a molding technology. Unfortunately, the thermal-instability catalyst is infeasible to be extruded since an afterward calcination is necessary to increase the mechanical strength. Thus, a coating technology is a necessity. In this work, an easy coating method was put forward. In brief, catalyst powder was pretreated by ball milling and coated on to a cordierite before being stabilized at 105 °C. When the coating thickness was increased from 23.89 to 30.59 μm, the internal diffusion resistance (R in ) for catalytic oxidization of chlorobenzene was increased from 0.93 to 1.37 s•m −1 at 200 °C. Although a higher catalytic temperature (350 °C) decreased the R in from 1.37 s•m −1 to 0.62 s•m −1 , the energy consumption was relatively huge. In comparison to increasing the temperature, increasing the effective thickness of the coating was preferable. As for the VW/Ti catalyst used in this work, the preferred powder content in the coating slurry was 40−45 wt % together with a coating rate of 13−14 wt %. The catalyst-powder size and weight percentage in the slurry determined both adhesive force and pore amount in the formed coating layer. The main result of this work is in favor of commercializing a temperature-sensitive catalyst.

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Section: Methodsmentioning

confidence: 99%

Section: Preparation Of Monolithic Catalystsmentioning

confidence: 99%