A5052640732- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Catalysis and Hydrodesulfurization Studies
- Zeolite Catalysis and Synthesis
- Enzyme Structure and Function
- Industrial Gas Emission Control
- Microbial Applications in Construction Materials
- Phosphorus and nutrient management
- Crystallization and Solubility Studies
- Cassava research and cyanide
- Bacterial biofilms and quorum sensing
- Carbon dioxide utilization in catalysis
- Biochemical and Structural Characterization
- X-ray Diffraction in Crystallography
- Electrochemical sensors and biosensors
- Catalysts for Methane Reforming
- Metallurgical and Alloy Processes
- Conducting polymers and applications
- Layered Double Hydroxides Synthesis and Applications
- Polymer Surface Interaction Studies
- Calcium Carbonate Crystallization and Inhibition
- Mesoporous Materials and Catalysis
- Geochemistry and Elemental Analysis
- Clay minerals and soil interactions
- Advanced biosensing and bioanalysis techniques
Lehigh University
2018-2021
Bethlehem Area School District
2020
University of Toledo
2015-2016
Oxidative dehydrogenation of propane to propylene can be achieved using conventional, oxygen-assisted (O2–ODHP) or via the use soft oxidants, such as CO2, N2O, S-containing compounds, and halogens/halides. The major roles oxidants include inhibiting overoxidation improving selectivity, which are considered current challenges in O2-assisted dehydrogenation. For both CO2– N2O–ODHP reactions, significant efforts have been devoted developing redox-active (e.g., chromium, vanadate, iron, etc.),...
The mechanochemical reaction of urea and catechol affords the quantitative formation a 1:1 urea·catechol (URCAT) cocrystal that can act simultaneously as urease inhibitor soil fertilizer. novel compound has been characterized using solid-state methods, its environmental activity assessed inhibition Canavalia ensiformis water vapor sorption experiments at room temperature. molecules within were organized in hydrogen-bonded dimers bridged by two molecules, with OH groups interacting via...
Using the mechanosynthesis of fertilizer cocrystal calcium urea phosphate as a model, we provide quantitative investigation chemical autocatalysis in mechanochemical reaction.
Natural gas is often sour, containing varying amounts of H2S and CO2. Gas sweetening processes that are routinely used rely on such as amine-based adsorption–desorption cycles, membrane separation, cryogenic technologies which energy-intensive reject This work explores the mechanism nature active sites for hydrogenation (HYD) CO2 in presence MoS2, a sulfur-tolerant catalyst, using steady-state kinetics studies density functional theory calculations. In absence H2S, this reaction positive...
A series of Al2O3-supported Fe-containing catalysts were synthesized by incipient wetness impregnation. The iron surface density was varied from 1 to 13 Fe atoms/nm2 spanning submonolayer above-monolayer coverage. resulting supported Fe-catalysts characterized N2 physisorption, ex situ X-ray diffraction (XRD), pair distribution function (PDF), absorption spectroscopy (XAS), aberration corrected scanning transmission electron microscopy (AC-STEM) and chemically probed hydrogen...
A mediatorless sensor with horseradish peroxidase (HRP) enzymes encapsulated inside peptide nanotubes (PNTs) has been proposed for amperometric detection of hydrogen peroxide. PNTs not only encapsulate the to retain their activity and stability, but also can provide direct electron transfer between an electrode electroactive sites HRP without mediators. Experimental results were compared hydroquinone (HQ)-mediated results. The PNT/HRP produced a current signal comparable HQ/HRP in entire...
Sustainable, liquid-assisted grinding—mechanochemical synthesis—of crucial nutrient containing compounds, namely, Ca- and Mg-struvites (CaNH4PO4·H2O MgNH4PO4·6H2O) complex double salts (Ca(NH4)2(HPO4)2·H2O dimorph B, Mg(NH4)2(HPO4)2·4H2O A), was performed. These compounds were synthesized using solid crystalline monoammonium phosphate (NH4H2PO4, MAP) low solubility common calcium magnesium minerals, such as hydroxides, carbonates, oxides. Powder X-ray diffraction showed single phase...
Developing an earth-abundant catalyst that is sulfur-tolerant, active, and highly selective of great interest for valorizing natural gas streams containing sour gas. A tin-modified alumina reported stable propane dehydrogenation in the presence percent quantities H2S feed. In particular, Sn/Al2O3–S catalysts with 1.5–5% Sn content exhibit 98% selectivity up to 16% conversion at 560 °C during fourth cycle. Experimental computational characterization shows active sites are defect...
Principles of green engineering require that material inputs are renewable. To this regard, a partial or full substitution one the feedstocks with waste from other industries can minimize environmental impacts. Potash rock is source key potassium (K), but its impacts, including land use and greenhouse gas emissions during mining beneficiations, concern. Carnallite used to electrochemically produce elemental magnesium (Mg) yields solid sludge K2O content ∼43% Mg 2.0%.This carnallite-derived...
Using the mechanosynthesis of calcium phosphate and urea fertilizer cocrystal as a model, we provide first in situ investigation autocatalysis mechanochemical reaction. The application Raman spectroscopy synchrotron X-ray diffraction provided direct evidence system which reaction product (water) mediates rate transformation underpins positive feedback kinetics.
Using the mechanosynthesis of calcium phosphate and urea fertilizer cocrystal as a model, we provide first in situ investigation autocatalysis mechanochemical reaction. The application Raman spectroscopy synchrotron X-ray diffraction provided direct evidence system which reaction product (water) mediates rate transformation underpins positive feedback kinetics.