Chlorinated volatile organic compound oxidation over SO42−/Fe2O3 catalysts

Zhang, Zhen; Huang, Ju; Xia, Hangqi; Dai, Qiguang; Gu, Yan; Lao, Yijie; Wang, Xingyi

doi:10.1016/j.jcat.2017.11.024

Cited by 126 publications

(51 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peaks located at 230 cm À 1 , 283 cm À 1 , 391 cm À 1 and 589 cm À 1 were indexed to the Eg modes of α-Fe 2 O 3 . [19][20][21] The Raman results further confirmed that the V doping brought no influence on the pristine structure. What's more, to analyze the element state, the X-ray photoelectron spectroscopy (XPS) of 17 % V-α-Fe 2 O 3 were provided in Figure 1 and S2.…”

Section: Resultsmentioning

confidence: 63%

Cation Decorated Ferric Oxide with a Polyhedral‐like Structure for the Electrocatalytic Nitrogen Reduction Reaction

et al. 2021

View full text Add to dashboard Cite

Considerable efforts have been devoted to electrocatalytic reaction of N 2 to NH 3 driven by the broad demand of ammonia and the disadvantages of the Haber-Bosch process. Unfortunately, the difficult adsorption of nitrogen molecules and the permanent dipole of N�N vastly inhibit its practical application. Historically, the ferric oxide (Fe 2 O 3 ) has inferior nitrogen reduction reaction (NRR) activity among transition compounds due to the unfavorable band gap and scarce active center. Considering the fact that the electronic properties and morphology character could be well-tuned brought by the incorporation of heteroatoms, we report vanadium atom decorated ferric oxide (named as V-α-Fe 2 O 3 ) with a polyhedrallike structure as an innovative catalyst for fast nitrogen reduction reaction. Benefiting from the incorporation of vanadium atoms, the electronic structure and active center of α-Fe 2 O 3 were well-optimized, with enhanced NRR activity being obtained. The as-synthesized 17 % V-α-Fe 2 O 3 exhibits excellent catalytic activity that the Faradaic efficiency is 5.7 % and the NH 3 yield is 68.7 μg h À 1 mg À 1 cat. at À 0.2 V (vs. RHE) in 0.1 M HCl. This work reported an approach to synthesize the enhanced catalysts even realizing the efficient application of NRR in the near future.

show abstract

Section: Resultsmentioning

confidence: 63%

Cation Decorated Ferric Oxide with a Polyhedral‐like Structure for the Electrocatalytic Nitrogen Reduction Reaction

et al. 2021

View full text Add to dashboard Cite

show abstract

“…This slight increase from 444°C to 460°C is consistent with the literature (Zou et al, 2018) and is explained by an interaction between Ni and Fe. The peak at 482°C can be assigned to the reduction of Fe2O3 to Fe3O4 (Chen et al, 2014;Pan et al, 2016) and the peak at 524°C can be attributed to the co-reduction of Fe2O3 and Fe3O4 to FeO and Fe (Zhang et al, 2018;Zou et al, 2018). Finally, the peak at 770°C can be due to the reduction of iron-phosphate (Chen et al, 2014) or the co-reduction of nickel and iron associated with phosphate (Pan et al, 2016).…”

Section: 1characterization Of Samplesmentioning

confidence: 99%

Catalytic wet air oxidation of high BPA concentration over iron-based catalyst supported on orthophosphate

Kaissouni

Brahmi

Zbair

et al. 2020

Environ Sci Pollut Res

View full text Add to dashboard Cite

The catalytic performance of Fe supported on nickel phosphate (NiP) was evaluated for the removal of Bisphenol A (BPA) by catalytic wet air oxidation (CWAO) at 140°C and 25 bar of pure oxygen pressure. The prepared NiP and Fe/NiP materials were fully characterized by XRD, N2physisorption, H2-TPR, TEM, and ICP analysis. Iron (Fe/NiP) impregnation of NiP support enhanced the BPA removal efficiency from 37.0 % to 99.6 % when CWAO was performed. This catalyst was highly stable given the operating conditions of acidic medium, high temperature and high pressure. The Fe/NiP catalyst showed an outstanding catalytic activity for oxidation of BPA, achieving almost complete removal of BPA in 180 min at a concentration of 300 mg/L, using 4 g/L of Fe/NiP. No iron leaching was detected after the CWAO of BPA. The stability of Fe/NiP was performed over three consecutive cycles, noting that BPA conversion was not affected and iron leaching was negligible. Therefore, this catalyst (Fe/NiP) could be considered as an innocuous and effective long-lasting catalyst for the oxidation of harmful organic molecules.

show abstract

“…All of these samples exhibited IR bands around 3300 and 1620 cm −1 , and these were assigned to the bending and stretching modes of the hydrogen-bonded surface OH groups. [23][24][25][26] From Figure 3, it is clear that there were several characteristic bands between 1250-800 cm −1 as a result of the sulphate groups, and S 6+ species probably existed in the form of inorganic chelating bidentate complexes over the catalysts surfaces. These results were consistent with other work.…”

Section: Acidities Of Fe-zn Composite Solid Acid Catalystsmentioning

confidence: 99%

Effect of Fe/Zn ratio in composite catalyst for synthesizing polyoxymethylene dimethyl ethers

Zhang

Nawaz

et al. 2020

Can J Chem Eng

View full text Add to dashboard Cite

Polyoxymethylene dimethyl ethers (PODE n ) are extremely effective diesel additives to reduce soot formation during combustion. We introduce a series of Fe-Zn composite solid acid catalysts (SO 4 2− /xFe 2 O 3 -yZnO), for the condensation reaction of methanol and paraformaldehyde (PF) with a cheap and feasible route to efficiently synthesize PODE n . These catalysts were characterized by different characterization techniques, namely BET, XRD, SEM, EDS, FTIR, and NH 3 -TPD and the results showed that Fe/Zn molar ratios strongly influenced the physicochemical characteristics of catalysts, thus affecting the methanol conversion and PODE 1-6 and PODE 3-6 selectivity. Accordingly, the methanol conversion was decreased and the selectivity of PODE 3-6 was increased after increasing the Zn molar content. Comparatively, SO 4 2− /Fe 2 O 3 -2ZnO exhibited superior catalytic activity among the various investigated catalysts due to the high acid density of strong acid sites. The optimal reaction conditions were observed to be at a 3.0 wt% catalyst loading (catalyst/reactant mass ratio), 2.5 hours ours of reaction time, a reaction temperature of 403 K, and a molar ratio of 3:1 of CH 2 O to methanol, achieving a high selectivity of 99.09% PODE 1-6 and 28.23% PODE 3-6 with 55.16% methanol conversion during the reaction. K E Y W O R D S acid sites, composite catalyst, polyoxymethylene dimethyl ethers, SO 4 2− /xFe 2 O 3 -yZnO

show abstract

Chlorinated volatile organic compound oxidation over SO42−/Fe2O3 catalysts

Cited by 126 publications

References 56 publications

Cation Decorated Ferric Oxide with a Polyhedral‐like Structure for the Electrocatalytic Nitrogen Reduction Reaction

Cation Decorated Ferric Oxide with a Polyhedral‐like Structure for the Electrocatalytic Nitrogen Reduction Reaction

Catalytic wet air oxidation of high BPA concentration over iron-based catalyst supported on orthophosphate

Effect of Fe/Zn ratio in composite catalyst for synthesizing polyoxymethylene dimethyl ethers

Contact Info

Product

Resources

About