A sol–gel route to synthesize vanadium doped silica through ionic liquid control and methylene blue degradation

Patil, Harshad R.; Murthy, Z.V.P.

doi:10.1016/j.cherd.2017.06.006

Cited by 5 publications

(2 citation statements)

References 31 publications

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“…All of the catalysts showed a broad peak centered at around 22°, typical of an amorphous silica structure. 31 Further, it is clear from the figure that no diffraction peak matching a crystalline V 2 O 5 phase is present in the patterns of 5V-AM and 5V-VA, whereas distinct diffraction peaks attributable to bulklike V 2 O 5 crystallites could be detected for 5V-VS derived from VOSO 4 as the precursor. 31,32 This result suggests that vanadium species were more finely dispersed on the catalysts derived from NH 4 VO 3 or V(acac) 3 as the precursors in comparison to those derived from VOSO 4 as the precursor.…”

Section: Resultsmentioning

confidence: 90%

Correlation of the Vanadium Precursor and Structure Performance of Porous VO_X-SiO₂ Solids for Catalytic Dehydrogenation of Propane

Chen

Yan

et al. 2019

Ind. Eng. Chem. Res.

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VO X -SiO 2 catalysts have been synthesized by the one-pot method using different vanadium precursors, namely, ammonium metavanadate (NH 4 VO 3 ; VO 3 − , V 5+ ), vanadium acetylacetonate [V(acac) 3 ; organic complex, V 3+ ], and vanadyl sulfate (VOSO 4 ; VO 2+ , V 4+ ). The influence of different vanadium precursors on the structure−performance relationship of these catalysts is studied on the propane dehydrogenation (PDH) reaction. The catalysts derived from VO 3 − attain a mesoporous structure with fairly high specific surface area and large pore volume, while those prepared with V(acac) 3 or VOSO 4 display a microporous structure. It is noted that VO X -SiO 2 catalysts derived from NH 4 VO 3 present a better catalytic performance, and low-polymerized VO X species display better intrinsic activity compared with isolated species. This study may contribute to the selection of vanadium precursors for the one-pot synthesis.

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Section: Resultsmentioning

confidence: 90%

Correlation of the Vanadium Precursor and Structure Performance of Porous VO_X-SiO₂ Solids for Catalytic Dehydrogenation of Propane

Chen

Yan

et al. 2019

Ind. Eng. Chem. Res.

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“…The first weight loss between 35 � C and 170 � C is attributed to water and solvent evaporation (Sun et al, 2017). The second weight between 210 � C and 370 � C is associated to the dissociation of IL and/or PVA (Bryaskova et al, 2013;Patil and Murthy, 2017) and the third thermal event between 380 � C and 585 � C is probably due to silane groups degradation (Si-OC2H5) (Duczinski et al, 2018;Sun et al, 2017).…”

Section: Silica Xerogel Thermal Analysismentioning

confidence: 99%

Designing silica xerogels containing RTIL for CO2 capture and CO2/CH4 separation: Influence of ILs anion, cation and cation side alkyl chain length and ramification

Santos

Bernard

Polesso

et al. 2020

Journal of Environmental Management

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A corrugated plate photocatalytic reactor for degradation of waterborne organic contaminants

et al. 2019

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A UV‐C/titanium dioxide (TiO2) plate coated photocatalytic reactor using a corrugated frame system was designed for water borne organic contaminant degradation. The anticipated advantages of using the corrugated layout include a larger photocatalytic surface area per unit volume and improved photocatalytic activity. The water distribution system was designed to assist effective interactions among the water pollutant, photocatalyst, and photons. The degradation of a methylene blue solution, as a model water contaminant, was carried out at room temperature (22 °C) at different concentrations and flowrates. With an 11 mg/L methylene blue solution, 70 % was degraded within the first 10 min using TiO2 coated corrugated plates, whereas under the same conditions the degradation rate was only 12 % for a corrugated reactor without a catalyst coating, and 4 % for a no‐plate reactor. The methylene blue degradation was described by the Langmuir‐Hinshelwood model, and the apparent photonic efficiency of the corrugated arrangement was found to be in the range of 1.53–2.83 % when half the initial concentration was degraded. The local area specific rate of energy absorption (LASREA) profile over the plates was determined from a model developed based on UV‐C light irradiation distribution and plate configuration. Light intensity measurements were carried out and were found to correlate with this model. A set of corrugated plate photocatalytic reactors with different geometries, but with the same coated area, were then analyzed and absorbed UV light intensities were integrated to determine the best geometry.

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A sol–gel route to synthesize vanadium doped silica through ionic liquid control and methylene blue degradation

Cited by 5 publications

References 31 publications

Correlation of the Vanadium Precursor and Structure Performance of Porous VO_X-SiO₂ Solids for Catalytic Dehydrogenation of Propane

Correlation of the Vanadium Precursor and Structure Performance of Porous VO_X-SiO₂ Solids for Catalytic Dehydrogenation of Propane

Designing silica xerogels containing RTIL for CO2 capture and CO2/CH4 separation: Influence of ILs anion, cation and cation side alkyl chain length and ramification

A corrugated plate photocatalytic reactor for degradation of waterborne organic contaminants

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A sol–gel route to synthesize vanadium doped silica through ionic liquid control and methylene blue degradation

Cited by 5 publications

References 31 publications

Correlation of the Vanadium Precursor and Structure Performance of Porous VOX-SiO2 Solids for Catalytic Dehydrogenation of Propane

Correlation of the Vanadium Precursor and Structure Performance of Porous VOX-SiO2 Solids for Catalytic Dehydrogenation of Propane

Designing silica xerogels containing RTIL for CO2 capture and CO2/CH4 separation: Influence of ILs anion, cation and cation side alkyl chain length and ramification

A corrugated plate photocatalytic reactor for degradation of waterborne organic contaminants

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Product

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Correlation of the Vanadium Precursor and Structure Performance of Porous VO_X-SiO₂ Solids for Catalytic Dehydrogenation of Propane

Correlation of the Vanadium Precursor and Structure Performance of Porous VO_X-SiO₂ Solids for Catalytic Dehydrogenation of Propane