Rajendran P

Department of Mathematics

School of Advanced Sciences

Vellore Campus

Satish Kumar G

Department of Chemistry

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

&nbsp;

&nbsp;

VIT University

ChemCatChem

24 wt% of iron has been successfully grafted as amorphous iron oxide over mesoporous channels of SBA-15 and 10 wt% alumina coated SBA-15 (AlSBA-15) using selective extraction deposition (SED) technique. The synthesized materials have been characterized using XRD, N2 adsorption studies, SEM-EDS, 27Al MAS NMR, XPS, H2-TPR, and HR-TEM techniques. 27Al MAS NMR and XPS characterization results revealed that iron has been preferentially grafted over alumina. The increased binding energy of the Fe2p electron (XPS) in the 24wt %Fe/AlSBA-15 confirms the existence of strong donor-acceptor interaction between grafted iron oxide and an alumina support. In TPR studies, unlike silica support, AlSBA-15 tuned the reduction property of various grafted oxidic iron species, which is evidenced by shifting of iron reduction peak to a high temperature of 436 °C. In the destruction of 200 ppm of phenol 24wt %Fe/AlSBA-15 catalyst demonstrated 100% phenol conversion and 86% TOC removal with 0.4 ppm (0.1%) iron leaching within 30 minutes of reaction. 24wt %Fe/SBA-15 catalyst also exhibited similar performance however, leaching of iron was found to be up to 20 ppm (8%). The 24wt %Fe/AlSBA-15 catalyst was recycled successfully five times without loss in the catalytic activity and stability. © 2019 Wiley-VCH Verlag GmbH &amp; Co. KGaA, Weinheim

ChemistrySelect

Enhanced Stability of Abundant Amorphous Iron (III) oxide Grafted AlSBA‐15 as Highly Efficient Heterogeneous Fenton Catalyst for the Destruction of Phenol

2–8 wt % iron has been grafted over SBA-15 and 10 wt % alumina grafted SBA-15 (AlSBA-15) through selective extraction deposition technique using LaFeO3 as iron precursor in acidic solution. DRS-UV spectra confirmed the presence of iron as isolated Fe(III), Fe(III)-clusters and amorphous FeOx oligomers. SEM-EDX mapping, FT-IR, XPS, HR-TEM and 27Al MAS NMR characterisation results confirmed that iron grafted over AlSBA-15 preferentially reside on the alumina. The donor-acceptor interaction of grafted iron ions with alumina atoms displaying Lewis acid properties stabilized iron at higher oxidation state Fe(III+δ). This increased the BE of Fe2p electrons (XPS) and shifted the temperature of iron reduction in 2–8 wt %Fe/AlSBA-15 materials to higher value (600 °C) compared with Fe/SBA-15 (H2-TPR). In arylation of benzene, 8 wt %Fe/AlSBA-15 demonstrated excellent redox catalytic activity with TOF close to homogeneous catalyst and 82 % biphenyl yield. The catalyst demonstrated consistent catalytic performance for 7 cycles. © 2018 Wiley-VCH Verlag GmbH &amp; Co. KGaA, Weinheim

Alumina as Solid-State Ligand in Enhancing the Redox Catalytic Property of Iron Oxide Grafted AlSBA-15 towards Arylation of Arene

Applied Catalysis B: Environmental

Fe/SiO2 heterogeneous Fenton catalyst for continuous catalytic wet peroxide oxidation prepared in situ by grafting of iron released from LaFeO3

Angewandte Chemie International Edition

Heterogeneous Catalysis: Understanding for Designing, and Designing for Applications

ACS Catalysis

Isolated FeII on Silica As a Selective Propane Dehydrogenation Catalyst

Microporous and Mesoporous Materials

Identification of iron species in FeSiBEA by DR UV–vis, XPS and Mössbauer spectroscopy: Influence of Fe content

Journal of Catalysis

Structural and electronic promotion with alkali cations of silica-supported Fe(III) sites for alkane oxidation

A Sustainable Heterogeneous Iron Catalyst Fe/SBA-15 towards Direct Arylation of Unactivated C(sp3)−H and C(sp2)−H Bonds with Arenes

Journal	Data powered by TypesetChemCatChem
Publisher	Data powered by TypesetWiley
ISSN	1867-3880
Open Access	0